<?php
/**
* @link http://www.yiiframework.com/
* @copyright Copyright (c) 2008 Yii Software LLC
* @license http://www.yiiframework.com/license/
*/
namespace yii\helpers;
use Yii;
use yii\base\InvalidParamException;
use yii\web\Request;
use yii\base\Model;
/**
* HtmlBase provides concrete implementation for [[Html]].
*
* Do not use HtmlBase. Use [[Html]] instead.
*
* @author Qiang Xue < qiang.xue @ gmail . com >
* @since 2.0
*/
class HtmlBase
{
/**
* @var array list of void elements (element name => 1)
* @see http://www.w3.org/TR/html-markup/syntax.html#void-element
*/
public static $voidElements = array(
'area' => 1,
'base' => 1,
'br' => 1,
'col' => 1,
'command' => 1,
'embed' => 1,
'hr' => 1,
'img' => 1,
'input' => 1,
'keygen' => 1,
'link' => 1,
'meta' => 1,
'param' => 1,
'source' => 1,
'track' => 1,
'wbr' => 1,
);
/**
* @var array the preferred order of attributes in a tag. This mainly affects the order of the attributes
* that are rendered by [[renderAttributes()]].
*/
public static $attributeOrder = array(
'type',
'id',
'class',
'name',
'value',
'href',
'src',
'action',
'method',
'selected',
'checked',
'readonly',
'disabled',
'multiple',
'size',
'maxlength',
'width',
'height',
'rows',
'cols',
'alt',
'title',
'rel',
'media',
);
/**
* Encodes special characters into HTML entities.
* The [[yii\base\Application::charset|application charset]] will be used for encoding.
* @param string $content the content to be encoded
* @param boolean $doubleEncode whether to encode HTML entities in `$content`. If false,
* HTML entities in `$content` will not be further encoded.
* @return string the encoded content
* @see decode
* @see http://www.php.net/manual/en/function.htmlspecialchars.php
*/
public static function encode($content, $doubleEncode = true)
{
return htmlspecialchars($content, ENT_QUOTES, Yii::$app->charset, $doubleEncode);
}
/**
* Decodes special HTML entities back to the corresponding characters.
* This is the opposite of [[encode()]].
* @param string $content the content to be decoded
* @return string the decoded content
* @see encode
* @see http://www.php.net/manual/en/function.htmlspecialchars-decode.php
*/
public static function decode($content)
{
return htmlspecialchars_decode($content, ENT_QUOTES);
}
/**
* Generates a complete HTML tag.
* @param string $name the tag name
* @param string $content the content to be enclosed between the start and end tags. It will not be HTML-encoded.
* If this is coming from end users, you should consider [[encode()]] it to prevent XSS attacks.
* @param array $options the tag options in terms of name-value pairs. These will be rendered as
* the attributes of the resulting tag. The values will be HTML-encoded using [[encode()]].
* If a value is null, the corresponding attribute will not be rendered.
* @return string the generated HTML tag
* @see beginTag
* @see endTag
*/
public static function tag($name, $content = '', $options = array())
{
$html = "< $name" . static::renderTagAttributes($options) . '>';
return isset(static::$voidElements[strtolower($name)]) ? $html : "$html$content< /$name>";
}
/**
* Generates a start tag.
* @param string $name the tag name
* @param array $options the tag options in terms of name-value pairs. These will be rendered as
* the attributes of the resulting tag. The values will be HTML-encoded using [[encode()]].
* If a value is null, the corresponding attribute will not be rendered.
* @return string the generated start tag
* @see endTag
* @see tag
*/
public static function beginTag($name, $options = array())
{
return "< $name" . static::renderTagAttributes($options) . '>';
}
/**
* Generates an end tag.
* @param string $name the tag name
* @return string the generated end tag
* @see beginTag
* @see tag
*/
public static function endTag($name)
{
return "< /$name>";
}
/**
* Generates a style tag.
* @param string $content the style content
* @param array $options the tag options in terms of name-value pairs. These will be rendered as
* the attributes of the resulting tag. The values will be HTML-encoded using [[encode()]].
* If a value is null, the corresponding attribute will not be rendered.
* If the options does not contain "type", a "type" attribute with value "text/css" will be used.
* @return string the generated style tag
*/
public static function style($content, $options = array())
{
return static::tag('style', $content, $options);
}
/**
* Generates a script tag.
* @param string $content the script content
* @param array $options the tag options in terms of name-value pairs. These will be rendered as
* the attributes of the resulting tag. The values will be HTML-encoded using [[encode()]].
* If a value is null, the corresponding attribute will not be rendered.
* If the options does not contain "type", a "type" attribute with value "text/javascript" will be rendered.
* @return string the generated script tag
*/
public static function script($content, $options = array())
{
return static::tag('script', $content, $options);
}
/**
* Generates a link tag that refers to an external CSS file.
* @param array|string $url the URL of the external CSS file. This parameter will be processed by [[url()]].
* @param array $options the tag options in terms of name-value pairs. These will be rendered as
* the attributes of the resulting tag. The values will be HTML-encoded using [[encode()]].
* If a value is null, the corresponding attribute will not be rendered.
* @return string the generated link tag
* @see url
*/
public static function cssFile($url, $options = array())
{
$options['rel'] = 'stylesheet';
$options['href'] = static::url($url);
return static::tag('link', '', $options);
}
/**
* Generates a script tag that refers to an external JavaScript file.
* @param string $url the URL of the external JavaScript file. This parameter will be processed by [[url()]].
* @param array $options the tag options in terms of name-value pairs. These will be rendered as
* the attributes of the resulting tag. The values will be HTML-encoded using [[encode()]].
* If a value is null, the corresponding attribute will not be rendered.
* @return string the generated script tag
* @see url
*/
public static function jsFile($url, $options = array())
{
$options['src'] = static::url($url);
return static::tag('script', '', $options);
}
/**
* Generates a form start tag.
* @param array|string $action the form action URL. This parameter will be processed by [[url()]].
* @param string $method the form submission method, such as "post", "get", "put", "delete" (case-insensitive).
* Since most browsers only support "post" and "get", if other methods are given, they will
* be simulated using "post", and a hidden input will be added which contains the actual method type.
* See [[\yii\web\Request::restVar]] for more details.
* @param array $options the tag options in terms of name-value pairs. These will be rendered as
* the attributes of the resulting tag. The values will be HTML-encoded using [[encode()]].
* If a value is null, the corresponding attribute will not be rendered.
* @return string the generated form start tag.
* @see endForm
*/
public static function beginForm($action = '', $method = 'post', $options = array())
{
$action = static::url($action);
$hiddenInputs = array();
$request = Yii::$app->getRequest();
if ($request instanceof Request) {
if (strcasecmp($method, 'get') & & strcasecmp($method, 'post')) {
// simulate PUT, DELETE, etc. via POST
$hiddenInputs[] = static::hiddenInput($request->restVar, $method);
$method = 'post';
}
if ($request->enableCsrfValidation) {
$hiddenInputs[] = static::hiddenInput($request->csrfTokenName, $request->getCsrfToken());
}
}
if (!strcasecmp($method, 'get') & & ($pos = strpos($action, '?')) !== false) {
// query parameters in the action are ignored for GET method
// we use hidden fields to add them back
foreach (explode('& ', substr($action, $pos + 1)) as $pair) {
if (($pos1 = strpos($pair, '=')) !== false) {
$hiddenInputs[] = static::hiddenInput(
urldecode(substr($pair, 0, $pos1)),
urldecode(substr($pair, $pos1 + 1))
);
} else {
$hiddenInputs[] = static::hiddenInput(urldecode($pair), '');
}
}
$action = substr($action, 0, $pos);
}
$options['action'] = $action;
$options['method'] = $method;
$form = static::beginTag('form', $options);
if (!empty($hiddenInputs)) {
$form .= "\n" . implode("\n", $hiddenInputs);
}
return $form;
}
/**
* Generates a form end tag.
* @return string the generated tag
* @see beginForm
*/
public static function endForm()
{
return '< / form > ';
}
/**
* Generates a hyperlink tag.
* @param string $text link body. It will NOT be HTML-encoded. Therefore you can pass in HTML code
* such as an image tag. If this is coming from end users, you should consider [[encode()]]
* it to prevent XSS attacks.
* @param array|string|null $url the URL for the hyperlink tag. This parameter will be processed by [[url()]]
* and will be used for the "href" attribute of the tag. If this parameter is null, the "href" attribute
* will not be generated.
* @param array $options the tag options in terms of name-value pairs. These will be rendered as
* the attributes of the resulting tag. The values will be HTML-encoded using [[encode()]].
* If a value is null, the corresponding attribute will not be rendered.
* @return string the generated hyperlink
* @see url
*/
public static function a($text, $url = null, $options = array())
{
if ($url !== null) {
$options['href'] = static::url($url);
}
return static::tag('a', $text, $options);
}
/**
* Generates a mailto hyperlink.
* @param string $text link body. It will NOT be HTML-encoded. Therefore you can pass in HTML code
* such as an image tag. If this is coming from end users, you should consider [[encode()]]
* it to prevent XSS attacks.
* @param string $email email address. If this is null, the first parameter (link body) will be treated
* as the email address and used.
* @param array $options the tag options in terms of name-value pairs. These will be rendered as
* the attributes of the resulting tag. The values will be HTML-encoded using [[encode()]].
* If a value is null, the corresponding attribute will not be rendered.
* @return string the generated mailto link
*/
public static function mailto($text, $email = null, $options = array())
{
$options['href'] = 'mailto:' . ($email === null ? $text : $email);
return static::tag('a', $text, $options);
}
/**
* Generates an image tag.
* @param string $src the image URL. This parameter will be processed by [[url()]].
* @param array $options the tag options in terms of name-value pairs. These will be rendered as
* the attributes of the resulting tag. The values will be HTML-encoded using [[encode()]].
* If a value is null, the corresponding attribute will not be rendered.
* @return string the generated image tag
*/
public static function img($src, $options = array())
{
$options['src'] = static::url($src);
if (!isset($options['alt'])) {
$options['alt'] = '';
}
return static::tag('img', '', $options);
}
/**
* Generates a label tag.
* @param string $content label text. It will NOT be HTML-encoded. Therefore you can pass in HTML code
* such as an image tag. If this is is coming from end users, you should [[encode()]]
* it to prevent XSS attacks.
* @param string $for the ID of the HTML element that this label is associated with.
* If this is null, the "for" attribute will not be generated.
* @param array $options the tag options in terms of name-value pairs. These will be rendered as
* the attributes of the resulting tag. The values will be HTML-encoded using [[encode()]].
* If a value is null, the corresponding attribute will not be rendered.
* @return string the generated label tag
*/
public static function label($content, $for = null, $options = array())
{
$options['for'] = $for;
return static::tag('label', $content, $options);
}
/**
* Generates a button tag.
* @param string $content the content enclosed within the button tag. It will NOT be HTML-encoded.
* Therefore you can pass in HTML code such as an image tag. If this is is coming from end users,
* you should consider [[encode()]] it to prevent XSS attacks.
* @param array $options the tag options in terms of name-value pairs. These will be rendered as
* the attributes of the resulting tag. The values will be HTML-encoded using [[encode()]].
* If a value is null, the corresponding attribute will not be rendered.
* @return string the generated button tag
*/
public static function button($content = 'Button', $options = array())
{
return static::tag('button', $content, $options);
}
/**
* Generates a submit button tag.
* @param string $content the content enclosed within the button tag. It will NOT be HTML-encoded.
* Therefore you can pass in HTML code such as an image tag. If this is is coming from end users,
* you should consider [[encode()]] it to prevent XSS attacks.
* @param array $options the tag options in terms of name-value pairs. These will be rendered as
* the attributes of the resulting tag. The values will be HTML-encoded using [[encode()]].
* If a value is null, the corresponding attribute will not be rendered.
* @return string the generated submit button tag
*/
public static function submitButton($content = 'Submit', $options = array())
{
$options['type'] = 'submit';
return static::button($content, $options);
}
/**
* Generates a reset button tag.
* @param string $content the content enclosed within the button tag. It will NOT be HTML-encoded.
* Therefore you can pass in HTML code such as an image tag. If this is is coming from end users,
* you should consider [[encode()]] it to prevent XSS attacks.
* @param array $options the tag options in terms of name-value pairs. These will be rendered as
* the attributes of the resulting tag. The values will be HTML-encoded using [[encode()]].
* If a value is null, the corresponding attribute will not be rendered.
* @return string the generated reset button tag
*/
public static function resetButton($content = 'Reset', $options = array())
{
$options['type'] = 'reset';
return static::button($content, $options);
}
/**
* Generates an input type of the given type.
* @param string $type the type attribute.
* @param string $name the name attribute. If it is null, the name attribute will not be generated.
* @param string $value the value attribute. If it is null, the value attribute will not be generated.
* @param array $options the tag options in terms of name-value pairs. These will be rendered as
* the attributes of the resulting tag. The values will be HTML-encoded using [[encode()]].
* If a value is null, the corresponding attribute will not be rendered.
* @return string the generated input tag
*/
public static function input($type, $name = null, $value = null, $options = array())
{
$options['type'] = $type;
$options['name'] = $name;
$options['value'] = $value === null ? null : (string)$value;
return static::tag('input', '', $options);
}
/**
* Generates an input button.
* @param string $label the value attribute. If it is null, the value attribute will not be generated.
* @param array $options the tag options in terms of name-value pairs. These will be rendered as
* the attributes of the resulting tag. The values will be HTML-encoded using [[encode()]].
* If a value is null, the corresponding attribute will not be rendered.
* @return string the generated button tag
*/
public static function buttonInput($label = 'Button', $options = array())
{
$options['type'] = 'button';
$options['value'] = $label;
return static::tag('input', '', $options);
}
/**
* Generates a submit input button.
* @param string $label the value attribute. If it is null, the value attribute will not be generated.
* @param array $options the tag options in terms of name-value pairs. These will be rendered as
* the attributes of the resulting tag. The values will be HTML-encoded using [[encode()]].
* If a value is null, the corresponding attribute will not be rendered.
* @return string the generated button tag
*/
public static function submitInput($label = 'Submit', $options = array())
{
$options['type'] = 'submit';
$options['value'] = $label;
return static::tag('input', '', $options);
}
/**
* Generates a reset input button.
* @param string $label the value attribute. If it is null, the value attribute will not be generated.
* @param array $options the attributes of the button tag. The values will be HTML-encoded using [[encode()]].
* Attributes whose value is null will be ignored and not put in the tag returned.
* @return string the generated button tag
*/
public static function resetInput($label = 'Reset', $options = array())
{
$options['type'] = 'reset';
$options['value'] = $label;
return static::tag('input', '', $options);
}
/**
* Generates a text input field.
* @param string $name the name attribute.
* @param string $value the value attribute. If it is null, the value attribute will not be generated.
* @param array $options the tag options in terms of name-value pairs. These will be rendered as
* the attributes of the resulting tag. The values will be HTML-encoded using [[encode()]].
* If a value is null, the corresponding attribute will not be rendered.
* @return string the generated button tag
*/
public static function textInput($name, $value = null, $options = array())
{
return static::input('text', $name, $value, $options);
}
/**
* Generates a hidden input field.
* @param string $name the name attribute.
* @param string $value the value attribute. If it is null, the value attribute will not be generated.
* @param array $options the tag options in terms of name-value pairs. These will be rendered as
* the attributes of the resulting tag. The values will be HTML-encoded using [[encode()]].
* If a value is null, the corresponding attribute will not be rendered.
* @return string the generated button tag
*/
public static function hiddenInput($name, $value = null, $options = array())
{
return static::input('hidden', $name, $value, $options);
}
/**
* Generates a password input field.
* @param string $name the name attribute.
* @param string $value the value attribute. If it is null, the value attribute will not be generated.
* @param array $options the tag options in terms of name-value pairs. These will be rendered as
* the attributes of the resulting tag. The values will be HTML-encoded using [[encode()]].
* If a value is null, the corresponding attribute will not be rendered.
* @return string the generated button tag
*/
public static function passwordInput($name, $value = null, $options = array())
{
return static::input('password', $name, $value, $options);
}
/**
* Generates a file input field.
* To use a file input field, you should set the enclosing form's "enctype" attribute to
* be "multipart/form-data". After the form is submitted, the uploaded file information
* can be obtained via $_FILES[$name] (see PHP documentation).
* @param string $name the name attribute.
* @param string $value the value attribute. If it is null, the value attribute will not be generated.
* @param array $options the tag options in terms of name-value pairs. These will be rendered as
* the attributes of the resulting tag. The values will be HTML-encoded using [[encode()]].
* If a value is null, the corresponding attribute will not be rendered.
* @return string the generated button tag
*/
public static function fileInput($name, $value = null, $options = array())
{
return static::input('file', $name, $value, $options);
}
/**
* Generates a text area input.
* @param string $name the input name
* @param string $value the input value. Note that it will be encoded using [[encode()]].
* @param array $options the tag options in terms of name-value pairs. These will be rendered as
* the attributes of the resulting tag. The values will be HTML-encoded using [[encode()]].
* If a value is null, the corresponding attribute will not be rendered.
* @return string the generated text area tag
*/
public static function textarea($name, $value = '', $options = array())
{
$options['name'] = $name;
return static::tag('textarea', static::encode($value), $options);
}
/**
* Generates a radio button input.
* @param string $name the name attribute.
* @param boolean $checked whether the radio button should be checked.
* @param array $options the tag options in terms of name-value pairs. The following options are specially handled:
*
* - uncheck: string, the value associated with the uncheck state of the radio button. When this attribute
* is present, a hidden input will be generated so that if the radio button is not checked and is submitted,
* the value of this attribute will still be submitted to the server via the hidden input.
*
* The rest of the options will be rendered as the attributes of the resulting tag. The values will
* be HTML-encoded using [[encode()]]. If a value is null, the corresponding attribute will not be rendered.
*
* @return string the generated radio button tag
*/
public static function radio($name, $checked = false, $options = array())
{
$options['checked'] = (boolean)$checked;
$value = array_key_exists('value', $options) ? $options['value'] : '1';
if (isset($options['uncheck'])) {
// add a hidden field so that if the radio button is not selected, it still submits a value
$hidden = static::hiddenInput($name, $options['uncheck']);
unset($options['uncheck']);
} else {
$hidden = '';
}
return $hidden . static::input('radio', $name, $value, $options);
}
/**
* Generates a checkbox input.
* @param string $name the name attribute.
* @param boolean $checked whether the checkbox should be checked.
* @param array $options the tag options in terms of name-value pairs. The following options are specially handled:
*
* - uncheck: string, the value associated with the uncheck state of the checkbox. When this attribute
* is present, a hidden input will be generated so that if the checkbox is not checked and is submitted,
* the value of this attribute will still be submitted to the server via the hidden input.
*
* The rest of the options will be rendered as the attributes of the resulting tag. The values will
* be HTML-encoded using [[encode()]]. If a value is null, the corresponding attribute will not be rendered.
*
* @return string the generated checkbox tag
*/
public static function checkbox($name, $checked = false, $options = array())
{
$options['checked'] = (boolean)$checked;
$value = array_key_exists('value', $options) ? $options['value'] : '1';
if (isset($options['uncheck'])) {
// add a hidden field so that if the checkbox is not selected, it still submits a value
$hidden = static::hiddenInput($name, $options['uncheck']);
unset($options['uncheck']);
} else {
$hidden = '';
}
return $hidden . static::input('checkbox', $name, $value, $options);
}
/**
* Generates a drop-down list.
* @param string $name the input name
* @param string $selection the selected value
* @param array $items the option data items. The array keys are option values, and the array values
* are the corresponding option labels. The array can also be nested (i.e. some array values are arrays too).
* For each sub-array, an option group will be generated whose label is the key associated with the sub-array.
* If you have a list of data models, you may convert them into the format described above using
* [[\yii\helpers\ArrayHelper::map()]].
*
* Note, the values and labels will be automatically HTML-encoded by this method, and the blank spaces in
* the labels will also be HTML-encoded.
* @param array $options the tag options in terms of name-value pairs. The following options are specially handled:
*
* - prompt: string, a prompt text to be displayed as the first option;
* - options: array, the attributes for the select option tags. The array keys must be valid option values,
* and the array values are the extra attributes for the corresponding option tags. For example,
*
* ~~~
* array(
* 'value1' => array('disabled' => true),
* 'value2' => array('label' => 'value 2'),
* );
* ~~~
*
* - groups: array, the attributes for the optgroup tags. The structure of this is similar to that of 'options',
* except that the array keys represent the optgroup labels specified in $items.
*
* The rest of the options will be rendered as the attributes of the resulting tag. The values will
* be HTML-encoded using [[encode()]]. If a value is null, the corresponding attribute will not be rendered.
*
* @return string the generated drop-down list tag
*/
public static function dropDownList($name, $selection = null, $items = array(), $options = array())
{
$options['name'] = $name;
$selectOptions = static::renderSelectOptions($selection, $items, $options);
return static::tag('select', "\n" . $selectOptions . "\n", $options);
}
/**
* Generates a list box.
* @param string $name the input name
* @param string|array $selection the selected value(s)
* @param array $items the option data items. The array keys are option values, and the array values
* are the corresponding option labels. The array can also be nested (i.e. some array values are arrays too).
* For each sub-array, an option group will be generated whose label is the key associated with the sub-array.
* If you have a list of data models, you may convert them into the format described above using
* [[\yii\helpers\ArrayHelper::map()]].
*
* Note, the values and labels will be automatically HTML-encoded by this method, and the blank spaces in
* the labels will also be HTML-encoded.
* @param array $options the tag options in terms of name-value pairs. The following options are specially handled:
*
* - prompt: string, a prompt text to be displayed as the first option;
* - options: array, the attributes for the select option tags. The array keys must be valid option values,
* and the array values are the extra attributes for the corresponding option tags. For example,
*
* ~~~
* array(
* 'value1' => array('disabled' => true),
* 'value2' => array('label' => 'value 2'),
* );
* ~~~
*
* - groups: array, the attributes for the optgroup tags. The structure of this is similar to that of 'options',
* except that the array keys represent the optgroup labels specified in $items.
* - unselect: string, the value that will be submitted when no option is selected.
* When this attribute is set, a hidden field will be generated so that if no option is selected in multiple
* mode, we can still obtain the posted unselect value.
*
* The rest of the options will be rendered as the attributes of the resulting tag. The values will
* be HTML-encoded using [[encode()]]. If a value is null, the corresponding attribute will not be rendered.
*
* @return string the generated list box tag
*/
public static function listBox($name, $selection = null, $items = array(), $options = array())
{
if (!isset($options['size'])) {
$options['size'] = 4;
}
if (!empty($options['multiple']) & & substr($name, -2) !== '[]') {
$name .= '[]';
}
$options['name'] = $name;
if (isset($options['unselect'])) {
// add a hidden field so that if the list box has no option being selected, it still submits a value
if (substr($name, -2) === '[]') {
$name = substr($name, 0, -2);
}
$hidden = static::hiddenInput($name, $options['unselect']);
unset($options['unselect']);
} else {
$hidden = '';
}
$selectOptions = static::renderSelectOptions($selection, $items, $options);
return $hidden . static::tag('select', "\n" . $selectOptions . "\n", $options);
}
/**
* Generates a list of checkboxes.
* A checkbox list allows multiple selection, like [[listBox()]].
* As a result, the corresponding submitted value is an array.
* @param string $name the name attribute of each checkbox.
* @param string|array $selection the selected value(s).
* @param array $items the data item used to generate the checkboxes.
* The array keys are the labels, while the array values are the corresponding checkbox values.
* @param array $options options (name => config) for the checkbox list. The following options are supported:
*
* - unselect: string, the value that should be submitted when none of the checkboxes is selected.
* By setting this option, a hidden input will be generated.
* - encode: boolean, whether to HTML-encode the checkbox labels. Defaults to true.
* This option is ignored if `item` option is set.
* - separator: string, the HTML code that separates items.
* - item: callable, a callback that can be used to customize the generation of the HTML code
* corresponding to a single item in $items. The signature of this callback must be:
*
* ~~~
* function ($index, $label, $name, $checked, $value)
* ~~~
*
* where $index is the zero-based index of the checkbox in the whole list; $label
* is the label for the checkbox; and $name, $value and $checked represent the name,
* value and the checked status of the checkbox input, respectively.
* @return string the generated checkbox list
*/
public static function checkboxList($name, $selection = null, $items = array(), $options = array())
{
if (substr($name, -2) !== '[]') {
$name .= '[]';
}
$formatter = isset($options['item']) ? $options['item'] : null;
$encode = !isset($options['encode']) || $options['encode'];
$lines = array();
$index = 0;
foreach ($items as $value => $label) {
$checked = $selection !== null & &
(!is_array($selection) & & !strcmp($value, $selection)
|| is_array($selection) & & in_array($value, $selection));
if ($formatter !== null) {
$lines[] = call_user_func($formatter, $index, $label, $name, $checked, $value);
} else {
$checkbox = static::checkbox($name, $checked, array('value' => $value));
$lines[] = static::label($checkbox . ' ' . ($encode ? static::encode($label) : $label));
}
$index++;
}
if (isset($options['unselect'])) {
// add a hidden field so that if the list box has no option being selected, it still submits a value
$name2 = substr($name, -2) === '[]' ? substr($name, 0, -2) : $name;
$hidden = static::hiddenInput($name2, $options['unselect']);
} else {
$hidden = '';
}
$separator = isset($options['separator']) ? $options['separator'] : "\n";
return $hidden . implode($separator, $lines);
}
/**
* Generates a list of radio buttons.
* A radio button list is like a checkbox list, except that it only allows single selection.
* @param string $name the name attribute of each radio button.
* @param string|array $selection the selected value(s).
* @param array $items the data item used to generate the radio buttons.
* The array keys are the labels, while the array values are the corresponding radio button values.
* @param array $options options (name => config) for the radio button list. The following options are supported:
*
* - unselect: string, the value that should be submitted when none of the radio buttons is selected.
* By setting this option, a hidden input will be generated.
* - encode: boolean, whether to HTML-encode the checkbox labels. Defaults to true.
* This option is ignored if `item` option is set.
* - separator: string, the HTML code that separates items.
* - item: callable, a callback that can be used to customize the generation of the HTML code
* corresponding to a single item in $items. The signature of this callback must be:
*
* ~~~
* function ($index, $label, $name, $checked, $value)
* ~~~
*
* where $index is the zero-based index of the radio button in the whole list; $label
* is the label for the radio button; and $name, $value and $checked represent the name,
* value and the checked status of the radio button input, respectively.
* @return string the generated radio button list
*/
public static function radioList($name, $selection = null, $items = array(), $options = array())
{
$encode = !isset($options['encode']) || $options['encode'];
$formatter = isset($options['item']) ? $options['item'] : null;
$lines = array();
$index = 0;
foreach ($items as $value => $label) {
$checked = $selection !== null & &
(!is_array($selection) & & !strcmp($value, $selection)
|| is_array($selection) & & in_array($value, $selection));
if ($formatter !== null) {
$lines[] = call_user_func($formatter, $index, $label, $name, $checked, $value);
} else {
$radio = static::radio($name, $checked, array('value' => $value));
$lines[] = static::label($radio . ' ' . ($encode ? static::encode($label) : $label));
}
$index++;
}
$separator = isset($options['separator']) ? $options['separator'] : "\n";
if (isset($options['unselect'])) {
// add a hidden field so that if the list box has no option being selected, it still submits a value
$hidden = static::hiddenInput($name, $options['unselect']);
} else {
$hidden = '';
}
return $hidden . implode($separator, $lines);
}
/**
* Generates an unordered list.
* @param array|\Traversable $items the items for generating the list. Each item generates a single list item.
* Note that items will be automatically HTML encoded if `$options['encode']` is not set or true.
* @param array $options options (name => config) for the radio button list. The following options are supported:
*
* - encode: boolean, whether to HTML-encode the items. Defaults to true.
* This option is ignored if the `item` option is specified.
* - itemOptions: array, the HTML attributes for the `li` tags. This option is ignored if the `item` option is specified.
* - item: callable, a callback that is used to generate each individual list item.
* The signature of this callback must be:
*
* ~~~
* function ($item, $index)
* ~~~
*
* where $index is the array key corresponding to `$item` in `$items`. The callback should return
* the whole list item tag.
*
* @return string the generated unordered list. An empty string is returned if `$items` is empty.
*/
public static function ul($items, $options = array())
{
if (empty($items)) {
return '';
}
$tag = isset($options['tag']) ? $options['tag'] : 'ul';
$encode = !isset($options['encode']) || $options['encode'];
$formatter = isset($options['item']) ? $options['item'] : null;
$itemOptions = isset($options['itemOptions']) ? $options['itemOptions'] : array();
unset($options['tag'], $options['encode'], $options['item'], $options['itemOptions']);
$results = array();
foreach ($items as $index => $item) {
if ($formatter !== null) {
$results[] = call_user_func($formatter, $item, $index);
} else {
$results[] = static::tag('li', $encode ? static::encode($item) : $item, $itemOptions);
}
}
return static::tag($tag, "\n" . implode("\n", $results) . "\n", $options);
}
/**
* Generates an ordered list.
* @param array|\Traversable $items the items for generating the list. Each item generates a single list item.
* Note that items will be automatically HTML encoded if `$options['encode']` is not set or true.
* @param array $options options (name => config) for the radio button list. The following options are supported:
*
* - encode: boolean, whether to HTML-encode the items. Defaults to true.
* This option is ignored if the `item` option is specified.
* - itemOptions: array, the HTML attributes for the `li` tags. This option is ignored if the `item` option is specified.
* - item: callable, a callback that is used to generate each individual list item.
* The signature of this callback must be:
*
* ~~~
* function ($item, $index)
* ~~~
*
* where $index is the array key corresponding to `$item` in `$items`. The callback should return
* the whole list item tag.
*
* @return string the generated ordered list. An empty string is returned if `$items` is empty.
*/
public static function ol($items, $options = array())
{
$options['tag'] = 'ol';
return static::ul($items, $options);
}
/**
* Generates a label tag for the given model attribute.
* The label text is the label associated with the attribute, obtained via [[Model::getAttributeLabel()]].
* @param Model $model the model object
* @param string $attribute the attribute name or expression. See [[getAttributeName()]] for the format
* about attribute expression.
* @param array $options the tag options in terms of name-value pairs. These will be rendered as
* the attributes of the resulting tag. The values will be HTML-encoded using [[encode()]].
* If a value is null, the corresponding attribute will not be rendered.
* The following options are specially handled:
*
* - label: this specifies the label to be displayed. Note that this will NOT be [[encoded()]].
* If this is not set, [[Model::getAttributeLabel()]] will be called to get the label for display
* (after encoding).
*
* @return string the generated label tag
*/
public static function activeLabel($model, $attribute, $options = array())
{
$attribute = static::getAttributeName($attribute);
$label = isset($options['label']) ? $options['label'] : static::encode($model->getAttributeLabel($attribute));
$for = array_key_exists('for', $options) ? $options['for'] : static::getInputId($model, $attribute);
unset($options['label'], $options['for']);
return static::label($label, $for, $options);
}
/**
* Generates an input tag for the given model attribute.
* This method will generate the "name" and "value" tag attributes automatically for the model attribute
* unless they are explicitly specified in `$options`.
* @param string $type the input type (e.g. 'text', 'password')
* @param Model $model the model object
* @param string $attribute the attribute name or expression. See [[getAttributeName()]] for the format
* about attribute expression.
* @param array $options the tag options in terms of name-value pairs. These will be rendered as
* the attributes of the resulting tag. The values will be HTML-encoded using [[encode()]].
* @return string the generated input tag
*/
public static function activeInput($type, $model, $attribute, $options = array())
{
$name = isset($options['name']) ? $options['name'] : static::getInputName($model, $attribute);
$value = isset($options['value']) ? $options['value'] : static::getAttributeValue($model, $attribute);
if (!array_key_exists('id', $options)) {
$options['id'] = static::getInputId($model, $attribute);
}
return static::input($type, $name, $value, $options);
}
/**
* Generates a text input tag for the given model attribute.
* This method will generate the "name" and "value" tag attributes automatically for the model attribute
* unless they are explicitly specified in `$options`.
* @param Model $model the model object
* @param string $attribute the attribute name or expression. See [[getAttributeName()]] for the format
* about attribute expression.
* @param array $options the tag options in terms of name-value pairs. These will be rendered as
* the attributes of the resulting tag. The values will be HTML-encoded using [[encode()]].
* @return string the generated input tag
*/
public static function activeTextInput($model, $attribute, $options = array())
{
return static::activeInput('text', $model, $attribute, $options);
}
/**
* Generates a hidden input tag for the given model attribute.
* This method will generate the "name" and "value" tag attributes automatically for the model attribute
* unless they are explicitly specified in `$options`.
* @param Model $model the model object
* @param string $attribute the attribute name or expression. See [[getAttributeName()]] for the format
* about attribute expression.
* @param array $options the tag options in terms of name-value pairs. These will be rendered as
* the attributes of the resulting tag. The values will be HTML-encoded using [[encode()]].
* @return string the generated input tag
*/
public static function activeHiddenInput($model, $attribute, $options = array())
{
return static::activeInput('hidden', $model, $attribute, $options);
}
/**
* Generates a password input tag for the given model attribute.
* This method will generate the "name" and "value" tag attributes automatically for the model attribute
* unless they are explicitly specified in `$options`.
* @param Model $model the model object
* @param string $attribute the attribute name or expression. See [[getAttributeName()]] for the format
* about attribute expression.
* @param array $options the tag options in terms of name-value pairs. These will be rendered as
* the attributes of the resulting tag. The values will be HTML-encoded using [[encode()]].
* @return string the generated input tag
*/
public static function activePasswordInput($model, $attribute, $options = array())
{
return static::activeInput('password', $model, $attribute, $options);
}
/**
* Generates a file input tag for the given model attribute.
* This method will generate the "name" and "value" tag attributes automatically for the model attribute
* unless they are explicitly specified in `$options`.
* @param Model $model the model object
* @param string $attribute the attribute name or expression. See [[getAttributeName()]] for the format
* about attribute expression.
* @param array $options the tag options in terms of name-value pairs. These will be rendered as
* the attributes of the resulting tag. The values will be HTML-encoded using [[encode()]].
* @return string the generated input tag
*/
public static function activeFileInput($model, $attribute, $options = array())
{
return static::activeInput('file', $model, $attribute, $options);
}
/**
* Generates a textarea tag for the given model attribute.
* The model attribute value will be used as the content in the textarea.
* @param Model $model the model object
* @param string $attribute the attribute name or expression. See [[getAttributeName()]] for the format
* about attribute expression.
* @param array $options the tag options in terms of name-value pairs. These will be rendered as
* the attributes of the resulting tag. The values will be HTML-encoded using [[encode()]].
* @return string the generated textarea tag
*/
public static function activeTextarea($model, $attribute, $options = array())
{
$name = static::getInputName($model, $attribute);
$value = static::getAttributeValue($model, $attribute);
if (!array_key_exists('id', $options)) {
$options['id'] = static::getInputId($model, $attribute);
}
return static::textarea($name, $value, $options);
}
/**
* Generates a radio button tag for the given model attribute.
* This method will generate the "name" tag attribute automatically unless it is explicitly specified in `$options`.
* This method will generate the "checked" tag attribute according to the model attribute value.
* @param Model $model the model object
* @param string $attribute the attribute name or expression. See [[getAttributeName()]] for the format
* about attribute expression.
* @param array $options the tag options in terms of name-value pairs. The following options are specially handled:
*
* - uncheck: string, the value associated with the uncheck state of the radio button. If not set,
* it will take the default value '0'. This method will render a hidden input so that if the radio button
* is not checked and is submitted, the value of this attribute will still be submitted to the server
* via the hidden input.
*
* The rest of the options will be rendered as the attributes of the resulting tag. The values will
* be HTML-encoded using [[encode()]]. If a value is null, the corresponding attribute will not be rendered.
*
* @return string the generated radio button tag
*/
public static function activeRadio($model, $attribute, $options = array())
{
$name = isset($options['name']) ? $options['name'] : static::getInputName($model, $attribute);
$checked = static::getAttributeValue($model, $attribute);
if (!array_key_exists('uncheck', $options)) {
$options['uncheck'] = '0';
}
if (!array_key_exists('id', $options)) {
$options['id'] = static::getInputId($model, $attribute);
}
return static::radio($name, $checked, $options);
}
/**
* Generates a checkbox tag for the given model attribute.
* This method will generate the "name" tag attribute automatically unless it is explicitly specified in `$options`.
* This method will generate the "checked" tag attribute according to the model attribute value.
* @param Model $model the model object
* @param string $attribute the attribute name or expression. See [[getAttributeName()]] for the format
* about attribute expression.
* @param array $options the tag options in terms of name-value pairs. The following options are specially handled:
*
* - uncheck: string, the value associated with the uncheck state of the radio button. If not set,
* it will take the default value '0'. This method will render a hidden input so that if the radio button
* is not checked and is submitted, the value of this attribute will still be submitted to the server
* via the hidden input.
*
* The rest of the options will be rendered as the attributes of the resulting tag. The values will
* be HTML-encoded using [[encode()]]. If a value is null, the corresponding attribute will not be rendered.
*
* @return string the generated checkbox tag
*/
public static function activeCheckbox($model, $attribute, $options = array())
{
$name = isset($options['name']) ? $options['name'] : static::getInputName($model, $attribute);
$checked = static::getAttributeValue($model, $attribute);
if (!array_key_exists('uncheck', $options)) {
$options['uncheck'] = '0';
}
if (!array_key_exists('id', $options)) {
$options['id'] = static::getInputId($model, $attribute);
}
return static::checkbox($name, $checked, $options);
}
/**
* Generates a drop-down list for the given model attribute.
* The selection of the drop-down list is taken from the value of the model attribute.
* @param Model $model the model object
* @param string $attribute the attribute name or expression. See [[getAttributeName()]] for the format
* about attribute expression.
* @param array $items the option data items. The array keys are option values, and the array values
* are the corresponding option labels. The array can also be nested (i.e. some array values are arrays too).
* For each sub-array, an option group will be generated whose label is the key associated with the sub-array.
* If you have a list of data models, you may convert them into the format described above using
* [[\yii\helpers\ArrayHelper::map()]].
*
* Note, the values and labels will be automatically HTML-encoded by this method, and the blank spaces in
* the labels will also be HTML-encoded.
* @param array $options the tag options in terms of name-value pairs. The following options are specially handled:
*
* - prompt: string, a prompt text to be displayed as the first option;
* - options: array, the attributes for the select option tags. The array keys must be valid option values,
* and the array values are the extra attributes for the corresponding option tags. For example,
*
* ~~~
* array(
* 'value1' => array('disabled' => true),
* 'value2' => array('label' => 'value 2'),
* );
* ~~~
*
* - groups: array, the attributes for the optgroup tags. The structure of this is similar to that of 'options',
* except that the array keys represent the optgroup labels specified in $items.
*
* The rest of the options will be rendered as the attributes of the resulting tag. The values will
* be HTML-encoded using [[encode()]]. If a value is null, the corresponding attribute will not be rendered.
*
* @return string the generated drop-down list tag
*/
public static function activeDropDownList($model, $attribute, $items, $options = array())
{
$name = isset($options['name']) ? $options['name'] : static::getInputName($model, $attribute);
$checked = static::getAttributeValue($model, $attribute);
if (!array_key_exists('id', $options)) {
$options['id'] = static::getInputId($model, $attribute);
}
return static::dropDownList($name, $checked, $items, $options);
}
/**
* Generates a list box.
* The selection of the list box is taken from the value of the model attribute.
* @param Model $model the model object
* @param string $attribute the attribute name or expression. See [[getAttributeName()]] for the format
* about attribute expression.
* @param array $items the option data items. The array keys are option values, and the array values
* are the corresponding option labels. The array can also be nested (i.e. some array values are arrays too).
* For each sub-array, an option group will be generated whose label is the key associated with the sub-array.
* If you have a list of data models, you may convert them into the format described above using
* [[\yii\helpers\ArrayHelper::map()]].
*
* Note, the values and labels will be automatically HTML-encoded by this method, and the blank spaces in
* the labels will also be HTML-encoded.
* @param array $options the tag options in terms of name-value pairs. The following options are specially handled:
*
* - prompt: string, a prompt text to be displayed as the first option;
* - options: array, the attributes for the select option tags. The array keys must be valid option values,
* and the array values are the extra attributes for the corresponding option tags. For example,
*
* ~~~
* array(
* 'value1' => array('disabled' => true),
* 'value2' => array('label' => 'value 2'),
* );
* ~~~
*
* - groups: array, the attributes for the optgroup tags. The structure of this is similar to that of 'options',
* except that the array keys represent the optgroup labels specified in $items.
* - unselect: string, the value that will be submitted when no option is selected.
* When this attribute is set, a hidden field will be generated so that if no option is selected in multiple
* mode, we can still obtain the posted unselect value.
*
* The rest of the options will be rendered as the attributes of the resulting tag. The values will
* be HTML-encoded using [[encode()]]. If a value is null, the corresponding attribute will not be rendered.
*
* @return string the generated list box tag
*/
public static function activeListBox($model, $attribute, $items, $options = array())
{
$name = isset($options['name']) ? $options['name'] : static::getInputName($model, $attribute);
$checked = static::getAttributeValue($model, $attribute);
if (!array_key_exists('unselect', $options)) {
$options['unselect'] = '0';
}
if (!array_key_exists('id', $options)) {
$options['id'] = static::getInputId($model, $attribute);
}
return static::listBox($name, $checked, $items, $options);
}
/**
* Generates a list of checkboxes.
* A checkbox list allows multiple selection, like [[listBox()]].
* As a result, the corresponding submitted value is an array.
* The selection of the checkbox list is taken from the value of the model attribute.
* @param Model $model the model object
* @param string $attribute the attribute name or expression. See [[getAttributeName()]] for the format
* about attribute expression.
* @param array $items the data item used to generate the checkboxes.
* The array keys are the labels, while the array values are the corresponding checkbox values.
* Note that the labels will NOT be HTML-encoded, while the values will.
* @param array $options options (name => config) for the checkbox list. The following options are specially handled:
*
* - unselect: string, the value that should be submitted when none of the checkboxes is selected.
* By setting this option, a hidden input will be generated.
* - separator: string, the HTML code that separates items.
* - item: callable, a callback that can be used to customize the generation of the HTML code
* corresponding to a single item in $items. The signature of this callback must be:
*
* ~~~
* function ($index, $label, $name, $checked, $value)
* ~~~
*
* where $index is the zero-based index of the checkbox in the whole list; $label
* is the label for the checkbox; and $name, $value and $checked represent the name,
* value and the checked status of the checkbox input.
* @return string the generated checkbox list
*/
public static function activeCheckboxList($model, $attribute, $items, $options = array())
{
$name = isset($options['name']) ? $options['name'] : static::getInputName($model, $attribute);
$checked = static::getAttributeValue($model, $attribute);
if (!array_key_exists('unselect', $options)) {
$options['unselect'] = '0';
}
return static::checkboxList($name, $checked, $items, $options);
}
/**
* Generates a list of radio buttons.
* A radio button list is like a checkbox list, except that it only allows single selection.
* The selection of the radio buttons is taken from the value of the model attribute.
* @param Model $model the model object
* @param string $attribute the attribute name or expression. See [[getAttributeName()]] for the format
* about attribute expression.
* @param array $items the data item used to generate the radio buttons.
* The array keys are the labels, while the array values are the corresponding radio button values.
* Note that the labels will NOT be HTML-encoded, while the values will.
* @param array $options options (name => config) for the radio button list. The following options are specially handled:
*
* - unselect: string, the value that should be submitted when none of the radio buttons is selected.
* By setting this option, a hidden input will be generated.
* - separator: string, the HTML code that separates items.
* - item: callable, a callback that can be used to customize the generation of the HTML code
* corresponding to a single item in $items. The signature of this callback must be:
*
* ~~~
* function ($index, $label, $name, $checked, $value)
* ~~~
*
* where $index is the zero-based index of the radio button in the whole list; $label
* is the label for the radio button; and $name, $value and $checked represent the name,
* value and the checked status of the radio button input.
* @return string the generated radio button list
*/
public static function activeRadioList($model, $attribute, $items, $options = array())
{
$name = isset($options['name']) ? $options['name'] : static::getInputName($model, $attribute);
$checked = static::getAttributeValue($model, $attribute);
if (!array_key_exists('unselect', $options)) {
$options['unselect'] = '0';
}
return static::radioList($name, $checked, $items, $options);
}
/**
* Renders the option tags that can be used by [[dropDownList()]] and [[listBox()]].
* @param string|array $selection the selected value(s). This can be either a string for single selection
* or an array for multiple selections.
* @param array $items the option data items. The array keys are option values, and the array values
* are the corresponding option labels. The array can also be nested (i.e. some array values are arrays too).
* For each sub-array, an option group will be generated whose label is the key associated with the sub-array.
* If you have a list of data models, you may convert them into the format described above using
* [[\yii\helpers\ArrayHelper::map()]].
*
* Note, the values and labels will be automatically HTML-encoded by this method, and the blank spaces in
* the labels will also be HTML-encoded.
* @param array $tagOptions the $options parameter that is passed to the [[dropDownList()]] or [[listBox()]] call.
* This method will take out these elements, if any: "prompt", "options" and "groups". See more details
* in [[dropDownList()]] for the explanation of these elements.
*
* @return string the generated list options
*/
public static function renderSelectOptions($selection, $items, & $tagOptions = array())
{
$lines = array();
if (isset($tagOptions['prompt'])) {
$prompt = str_replace(' ', ' ', static::encode($tagOptions['prompt']));
$lines[] = static::tag('option', $prompt, array('value' => ''));
}
$options = isset($tagOptions['options']) ? $tagOptions['options'] : array();
$groups = isset($tagOptions['groups']) ? $tagOptions['groups'] : array();
unset($tagOptions['prompt'], $tagOptions['options'], $tagOptions['groups']);
foreach ($items as $key => $value) {
if (is_array($value)) {
$groupAttrs = isset($groups[$key]) ? $groups[$key] : array();
$groupAttrs['label'] = $key;
$attrs = array('options' => $options, 'groups' => $groups);
$content = static::renderSelectOptions($selection, $value, $attrs);
$lines[] = static::tag('optgroup', "\n" . $content . "\n", $groupAttrs);
} else {
$attrs = isset($options[$key]) ? $options[$key] : array();
$attrs['value'] = (string)$key;
$attrs['selected'] = $selection !== null & &
(!is_array($selection) & & !strcmp($key, $selection)
|| is_array($selection) & & in_array($key, $selection));
$lines[] = static::tag('option', str_replace(' ', ' ', static::encode($value)), $attrs);
}
}
return implode("\n", $lines);
}
/**
* Renders the HTML tag attributes.
* Attributes whose values are of boolean type will be treated as [boolean attributes](http://www.w3.org/TR/html5/infrastructure.html#boolean-attributes).
* And attributes whose values are null will not be rendered.
* @param array $attributes attributes to be rendered. The attribute values will be HTML-encoded using [[encode()]].
* @return string the rendering result. If the attributes are not empty, they will be rendered
* into a string with a leading white space (so that it can be directly appended to the tag name
* in a tag. If there is no attribute, an empty string will be returned.
*/
public static function renderTagAttributes($attributes)
{
if (count($attributes) > 1) {
$sorted = array();
foreach (static::$attributeOrder as $name) {
if (isset($attributes[$name])) {
$sorted[$name] = $attributes[$name];
}
}
$attributes = array_merge($sorted, $attributes);
}
$html = '';
foreach ($attributes as $name => $value) {
if (is_bool($value)) {
if ($value) {
$html .= " $name";
}
} elseif ($value !== null) {
$html .= " $name=\"" . static::encode($value) . '"';
}
}
return $html;
}
/**
* Normalizes the input parameter to be a valid URL.
*
* If the input parameter
*
* - is an empty string: the currently requested URL will be returned;
* - is a non-empty string: it will first be processed by [[Yii::getAlias()]]. If the result
* is an absolute URL, it will be returned with any change further; Otherwise, the result
* will be prefixed with [[\yii\web\Request::baseUrl]] and returned.
* - is an array: the first array element is considered a route, while the rest of the name-value
* pairs are treated as the parameters to be used for URL creation using [[\yii\web\Controller::createUrl()]].
* For example: `array('post/index', 'page' => 2)`, `array('index')`.
*
* @param array|string $url the parameter to be used to generate a valid URL
* @return string the normalized URL
* @throws InvalidParamException if the parameter is invalid.
*/
public static function url($url)
{
if (is_array($url)) {
if (isset($url[0])) {
$route = $url[0];
$params = array_splice($url, 1);
if (Yii::$app->controller !== null) {
return Yii::$app->controller->createUrl($route, $params);
} else {
return Yii::$app->getUrlManager()->createUrl($route, $params);
}
} else {
throw new InvalidParamException('The array specifying a URL must contain at least one element.');
}
} elseif ($url === '') {
return Yii::$app->getRequest()->getUrl();
} else {
$url = Yii::getAlias($url);
if ($url !== '' & & ($url[0] === '/' || $url[0] === '#' || strpos($url, '://'))) {
return $url;
} else {
return Yii::$app->getRequest()->getBaseUrl() . '/' . $url;
}
}
}
/**
* Adds a CSS class to the specified options.
* If the CSS class is already in the options, it will not be added again.
* @param array $options the options to be modified.
* @param string $class the CSS class to be added
*/
public static function addCssClass(& $options, $class)
{
if (isset($options['class'])) {
$classes = ' ' . $options['class'] . ' ';
if (($pos = strpos($classes, ' ' . $class . ' ')) === false) {
$options['class'] .= ' ' . $class;
}
} else {
$options['class'] = $class;
}
}
/**
* Removes a CSS class from the specified options.
* @param array $options the options to be modified.
* @param string $class the CSS class to be removed
*/
public static function removeCssClass(& $options, $class)
{
if (isset($options['class'])) {
$classes = array_unique(preg_split('/\s+/', $options['class'] . ' ' . $class, -1, PREG_SPLIT_NO_EMPTY));
if (($index = array_search($class, $classes)) !== false) {
unset($classes[$index]);
}
if (empty($classes)) {
unset($options['class']);
} else {
$options['class'] = implode(' ', $classes);
}
}
}
/**
* Returns the real attribute name from the given attribute expression.
*
* An attribute expression is an attribute name prefixed and/or suffixed with array indexes.
* It is mainly used in tabular data input and/or input of array type. Below are some examples:
*
* - `[0]content` is used in tabular data input to represent the "content" attribute
* for the first model in tabular input;
* - `dates[0]` represents the first array element of the "dates" attribute;
* - `[0]dates[0]` represents the first array element of the "dates" attribute
* for the first model in tabular input.
*
* If `$attribute` has neither prefix nor suffix, it will be returned back without change.
* @param string $attribute the attribute name or expression
* @return string the attribute name without prefix and suffix.
* @throws InvalidParamException if the attribute name contains non-word characters.
*/
public static function getAttributeName($attribute)
{
if (preg_match('/(^|.*\])(\w+)(\[.*|$)/', $attribute, $matches)) {
return $matches[2];
} else {
throw new InvalidParamException('Attribute name must contain word characters only.');
}
}
/**
* Returns the value of the specified attribute name or expression.
*
* For an attribute expression like `[0]dates[0]`, this method will return the value of `$model->dates[0]`.
* See [[getAttributeName()]] for more details about attribute expression.
*
* @param Model $model the model object
* @param string $attribute the attribute name or expression
* @return mixed the corresponding attribute value
* @throws InvalidParamException if the attribute name contains non-word characters.
*/
public static function getAttributeValue($model, $attribute)
{
if (!preg_match('/(^|.*\])(\w+)(\[.*|$)/', $attribute, $matches)) {
throw new InvalidParamException('Attribute name must contain word characters only.');
}
$attribute = $matches[2];
$index = $matches[3];
if ($index === '') {
return $model->$attribute;
} else {
$value = $model->$attribute;
foreach (explode('][', trim($index, '[]')) as $id) {
if ((is_array($value) || $value instanceof \ArrayAccess) & & isset($value[$id])) {
$value = $value[$id];
} else {
return null;
}
}
return $value;
}
}
/**
* Generates an appropriate input name for the specified attribute name or expression.
*
* This method generates a name that can be used as the input name to collect user input
* for the specified attribute. The name is generated according to the [[Model::formName|form name]]
* of the model and the given attribute name. For example, if the form name of the `Post` model
* is `Post`, then the input name generated for the `content` attribute would be `Post[content]`.
*
* See [[getAttributeName()]] for explanation of attribute expression.
*
* @param Model $model the model object
* @param string $attribute the attribute name or expression
* @return string the generated input name
* @throws InvalidParamException if the attribute name contains non-word characters.
*/
public static function getInputName($model, $attribute)
{
$formName = $model->formName();
if (!preg_match('/(^|.*\])(\w+)(\[.*|$)/', $attribute, $matches)) {
throw new InvalidParamException('Attribute name must contain word characters only.');
}
$prefix = $matches[1];
$attribute = $matches[2];
$suffix = $matches[3];
if ($formName === '' & & $prefix === '') {
return $attribute . $suffix;
} elseif ($formName !== '') {
return $formName . $prefix . "[$attribute]" . $suffix;
} else {
throw new InvalidParamException(get_class($model) . '::formName() cannot be empty for tabular inputs.');
}
}
/**
* Generates an appropriate input ID for the specified attribute name or expression.
*
* This method converts the result [[getInputName()]] into a valid input ID.
* For example, [[getInputName()]] returns `Post[content]`, this method will return `Post-method`.
* @param Model $model the model object
* @param string $attribute the attribute name or expression. See [[getAttributeName()]] for explanation of attribute expression.
* @return string the generated input ID
* @throws InvalidParamException if the attribute name contains non-word characters.
*/
public static function getInputId($model, $attribute)
{
$name = strtolower(static::getInputName($model, $attribute));
return str_replace(array('[]', '][', '[', ']', ' '), array('', '-', '-', '', '-'), $name);
}
}
