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<?php
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/**
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* @link http://www.yiiframework.com/
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* @copyright Copyright (c) 2008 Yii Software LLC
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* @license http://www.yiiframework.com/license/
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*/
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namespace yii\base;
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use yii\helpers\StringHelper;
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use yii\validators\Validator;
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use yii\validators\RequiredValidator;
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/**
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* Model is the base class for data models.
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*
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* Model implements the following commonly used features:
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*
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* - attribute declaration: by default, every public class member is considered as
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* a model attribute
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* - attribute labels: each attribute may be associated with a label for display purpose
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* - massive attribute assignment
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* - scenario-based validation
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*
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* Model also raises the following events when performing data validation:
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*
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* - [[EVENT_BEFORE_VALIDATE]]: an event raised at the beginning of [[validate()]]
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* - [[EVENT_AFTER_VALIDATE]]: an event raised at the end of [[validate()]]
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*
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* You may directly use Model to store model data, or extend it with customization.
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* You may also customize Model by attaching [[ModelBehavior|model behaviors]].
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*
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* @property Vector $validators All the validators declared in the model.
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* @property array $activeValidators The validators applicable to the current [[scenario]].
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* @property array $errors Errors for all attributes or the specified attribute. Empty array is returned if no error.
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* @property array $attributes Attribute values (name=>value).
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* @property string $scenario The scenario that this model is in.
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*
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* @author Qiang Xue <qiang.xue@gmail.com>
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* @since 2.0
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*/
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class Model extends Component implements \IteratorAggregate, \ArrayAccess
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{
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/**
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* @event ModelEvent an event raised at the beginning of [[validate()]]. You may set
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* [[ModelEvent::isValid]] to be false to stop the validation.
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*/
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const EVENT_BEFORE_VALIDATE = 'beforeValidate';
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/**
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* @event Event an event raised at the end of [[validate()]]
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*/
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const EVENT_AFTER_VALIDATE = 'afterValidate';
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/**
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* @var array validation errors (attribute name => array of errors)
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*/
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private $_errors;
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/**
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* @var Vector vector of validators
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*/
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private $_validators;
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/**
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* @var string current scenario
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*/
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private $_scenario = 'default';
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/**
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* Returns the validation rules for attributes.
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*
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* Validation rules are used by [[validate()]] to check if attribute values are valid.
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* Child classes may override this method to declare different validation rules.
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*
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* Each rule is an array with the following structure:
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*
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* ~~~
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* array(
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* 'attribute list',
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* 'validator type',
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* 'on'=>'scenario name',
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* ...other parameters...
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* )
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* ~~~
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*
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* where
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*
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* - attribute list: required, specifies the attributes (separated by commas) to be validated;
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* - validator type: required, specifies the validator to be used. It can be the name of a model
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* class method, the name of a built-in validator, or a validator class name (or its path alias).
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* - on: optional, specifies the [[scenario|scenarios]] (separated by commas) when the validation
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* rule can be applied. If this option is not set, the rule will apply to all scenarios.
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* - additional name-value pairs can be specified to initialize the corresponding validator properties.
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* Please refer to individual validator class API for possible properties.
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*
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* A validator can be either an object of a class extending [[Validator]], or a model class method
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* (called *inline validator*) that has the following signature:
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*
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* ~~~
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* // $params refers to validation parameters given in the rule
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* function validatorName($attribute, $params)
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* ~~~
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*
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* Yii also provides a set of [[Validator::builtInValidators|built-in validators]].
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* They each has an alias name which can be used when specifying a validation rule.
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*
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* Below are some examples:
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*
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* ~~~
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* array(
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* // built-in "required" validator
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* array('username', 'required'),
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* // built-in "length" validator customized with "min" and "max" properties
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* array('username', 'length', 'min'=>3, 'max'=>12),
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* // built-in "compare" validator that is used in "register" scenario only
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* array('password', 'compare', 'compareAttribute'=>'password2', 'on'=>'register'),
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* // an inline validator defined via the "authenticate()" method in the model class
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* array('password', 'authenticate', 'on'=>'login'),
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* // a validator of class "CaptchaValidator"
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* array('captcha', 'CaptchaValidator'),
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* );
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* ~~~
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*
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* Note, in order to inherit rules defined in the parent class, a child class needs to
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* merge the parent rules with child rules using functions such as `array_merge()`.
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*
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* @return array validation rules
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* @see scenarios
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*/
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public function rules()
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{
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return array();
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}
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/**
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* Returns a list of scenarios and the corresponding active attributes.
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* An active attribute is one that is subject to validation in the current scenario.
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* The returned array should be in the following format:
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*
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* ~~~
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* array(
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* 'scenario1' => array('attribute11', 'attribute12', ...),
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* 'scenario2' => array('attribute21', 'attribute22', ...),
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* ...
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* )
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* ~~~
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*
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* By default, an active attribute that is considered safe and can be massively assigned.
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* If an attribute should NOT be massively assigned (thus considered unsafe),
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* please prefix the attribute with an exclamation character (e.g. '!rank').
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*
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* The default implementation of this method will return a 'default' scenario
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* which corresponds to all attributes listed in the validation rules applicable
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* to the 'default' scenario.
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*
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* @return array a list of scenarios and the corresponding active attributes.
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*/
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public function scenarios()
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{
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$attributes = array();
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foreach ($this->getActiveValidators() as $validator) {
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if ($validator->isActive('default')) {
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foreach ($validator->attributes as $name) {
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$attributes[$name] = true;
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}
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}
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}
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return array(
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'default' => array_keys($attributes),
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);
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}
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/**
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* Returns the list of attribute names.
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* By default, this method returns all public non-static properties of the class.
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* You may override this method to change the default behavior.
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* @return array list of attribute names.
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*/
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public function attributes()
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{
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$class = new \ReflectionClass($this);
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$names = array();
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foreach ($class->getProperties(\ReflectionProperty::IS_PUBLIC) as $property) {
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$name = $property->getName();
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if (!$property->isStatic()) {
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$names[] = $name;
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}
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}
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return $names;
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}
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/**
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* Returns the attribute labels.
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*
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* Attribute labels are mainly used for display purpose. For example, given an attribute
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* `firstName`, we can declare a label `First Name` which is more user-friendly and can
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* be displayed to end users.
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*
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* By default an attribute label is generated using [[generateAttributeLabel()]].
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* This method allows you to explicitly specify attribute labels.
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*
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* Note, in order to inherit labels defined in the parent class, a child class needs to
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* merge the parent labels with child labels using functions such as `array_merge()`.
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*
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* @return array attribute labels (name=>label)
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* @see generateAttributeLabel
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*/
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public function attributeLabels()
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{
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return array();
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}
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/**
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* Performs the data validation.
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*
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* This method executes the validation rules applicable to the current [[scenario]].
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* The following criteria are used to determine whether a rule is currently applicable:
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*
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* - the rule must be associated with the attributes relevant to the current scenario;
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* - the rules must be effective for the current scenario.
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*
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* This method will call [[beforeValidate()]] and [[afterValidate()]] before and
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* after the actual validation, respectively. If [[beforeValidate()]] returns false,
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* the validation will be cancelled and [[afterValidate()]] will not be called.
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*
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* Errors found during the validation can be retrieved via [[getErrors()]]
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* and [[getError()]].
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*
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* @param array $attributes list of attributes that should be validated.
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* If this parameter is empty, it means any attribute listed in the applicable
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* validation rules should be validated.
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* @param boolean $clearErrors whether to call [[clearErrors()]] before performing validation
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* @return boolean whether the validation is successful without any error.
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*/
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public function validate($attributes = null, $clearErrors = true)
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{
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if ($clearErrors) {
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$this->clearErrors();
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}
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if ($attributes === null) {
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$attributes = $this->activeAttributes();
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}
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if ($this->beforeValidate()) {
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foreach ($this->getActiveValidators() as $validator) {
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$validator->validate($this, $attributes);
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}
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$this->afterValidate();
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return !$this->hasErrors();
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}
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return false;
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}
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/**
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* This method is invoked before validation starts.
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* The default implementation raises a `beforeValidate` event.
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* You may override this method to do preliminary checks before validation.
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* Make sure the parent implementation is invoked so that the event can be raised.
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* @return boolean whether the validation should be executed. Defaults to true.
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* If false is returned, the validation will stop and the model is considered invalid.
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*/
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public function beforeValidate()
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{
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$event = new ModelEvent($this);
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$this->trigger(self::EVENT_BEFORE_VALIDATE, $event);
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return $event->isValid;
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}
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/**
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* This method is invoked after validation ends.
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* The default implementation raises an `afterValidate` event.
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* You may override this method to do postprocessing after validation.
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* Make sure the parent implementation is invoked so that the event can be raised.
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*/
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public function afterValidate()
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{
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$this->trigger(self::EVENT_AFTER_VALIDATE);
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}
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/**
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* Returns all the validators declared in [[rules()]].
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*
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* This method differs from [[getActiveValidators()]] in that the latter
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* only returns the validators applicable to the current [[scenario]].
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*
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* Because this method returns a [[Vector]] object, you may
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* manipulate it by inserting or removing validators (useful in model behaviors).
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* For example,
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*
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* ~~~
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* $model->validators->add($newValidator);
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* ~~~
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*
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* @return Vector all the validators declared in the model.
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*/
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public function getValidators()
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{
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if ($this->_validators === null) {
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$this->_validators = $this->createValidators();
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}
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return $this->_validators;
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}
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/**
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* Returns the validators applicable to the current [[scenario]].
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* @param string $attribute the name of the attribute whose applicable validators should be returned.
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* If this is null, the validators for ALL attributes in the model will be returned.
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* @return \yii\validators\Validator[] the validators applicable to the current [[scenario]].
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*/
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public function getActiveValidators($attribute = null)
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{
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$validators = array();
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$scenario = $this->getScenario();
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/** @var $validator Validator */
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foreach ($this->getValidators() as $validator) {
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if ($validator->isActive($scenario) && ($attribute === null || in_array($attribute, $validator->attributes, true))) {
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$validators[] = $validator;
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}
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}
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return $validators;
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}
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/**
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* Creates validator objects based on the validation rules specified in [[rules()]].
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* Unlike [[getValidators()]], each time this method is called, a new list of validators will be returned.
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* @return Vector validators
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* @throws InvalidConfigException if any validation rule configuration is invalid
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*/
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public function createValidators()
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{
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$validators = new Vector;
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foreach ($this->rules() as $rule) {
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if ($rule instanceof Validator) {
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$validators->add($rule);
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} elseif (isset($rule[0], $rule[1])) { // attributes, validator type
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$validator = Validator::createValidator($rule[1], $this, $rule[0], array_slice($rule, 2));
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$validators->add($validator);
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} else {
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throw new InvalidConfigException('Invalid validation rule: a rule must specify both attribute names and validator type.');
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}
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}
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return $validators;
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}
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/**
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* Returns a value indicating whether the attribute is required.
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* This is determined by checking if the attribute is associated with a
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* [[\yii\validators\RequiredValidator|required]] validation rule in the
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* current [[scenario]].
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* @param string $attribute attribute name
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* @return boolean whether the attribute is required
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*/
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public function isAttributeRequired($attribute)
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{
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foreach ($this->getActiveValidators($attribute) as $validator) {
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if ($validator instanceof RequiredValidator) {
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return true;
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}
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}
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return false;
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}
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/**
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* Returns a value indicating whether the attribute is safe for massive assignments.
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* @param string $attribute attribute name
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* @return boolean whether the attribute is safe for massive assignments
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*/
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public function isAttributeSafe($attribute)
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{
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return in_array($attribute, $this->safeAttributes(), true);
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}
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/**
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* Returns the text label for the specified attribute.
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* @param string $attribute the attribute name
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* @return string the attribute label
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* @see generateAttributeLabel
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* @see attributeLabels
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*/
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public function getAttributeLabel($attribute)
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{
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$labels = $this->attributeLabels();
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return isset($labels[$attribute]) ? $labels[$attribute] : $this->generateAttributeLabel($attribute);
|
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
|
|
* Returns a value indicating whether there is any validation error.
|
|
|
|
* @param string|null $attribute attribute name. Use null to check all attributes.
|
|
|
|
* @return boolean whether there is any error.
|
|
|
|
*/
|
|
|
|
public function hasErrors($attribute = null)
|
|
|
|
{
|
|
|
|
return $attribute === null ? !empty($this->_errors) : isset($this->_errors[$attribute]);
|
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
|
|
* Returns the errors for all attribute or a single attribute.
|
|
|
|
* @param string $attribute attribute name. Use null to retrieve errors for all attributes.
|
|
|
|
* @return array errors for all attributes or the specified attribute. Empty array is returned if no error.
|
|
|
|
* Note that when returning errors for all attributes, the result is a two-dimensional array, like the following:
|
|
|
|
*
|
|
|
|
* ~~~
|
|
|
|
* array(
|
|
|
|
* 'username' => array(
|
|
|
|
* 'Username is required.',
|
|
|
|
* 'Username must contain only word characters.',
|
|
|
|
* ),
|
|
|
|
* 'email' => array(
|
|
|
|
* 'Email address is invalid.',
|
|
|
|
* )
|
|
|
|
* )
|
|
|
|
* ~~~
|
|
|
|
*
|
|
|
|
* @see getError
|
|
|
|
*/
|
|
|
|
public function getErrors($attribute = null)
|
|
|
|
{
|
|
|
|
if ($attribute === null) {
|
|
|
|
return $this->_errors === null ? array() : $this->_errors;
|
|
|
|
} else {
|
|
|
|
return isset($this->_errors[$attribute]) ? $this->_errors[$attribute] : array();
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
|
|
* Returns the first error of every attribute in the model.
|
|
|
|
* @return array the first errors. An empty array will be returned if there is no error.
|
|
|
|
*/
|
|
|
|
public function getFirstErrors()
|
|
|
|
{
|
|
|
|
if (empty($this->_errors)) {
|
|
|
|
return array();
|
|
|
|
} else {
|
|
|
|
$errors = array();
|
|
|
|
foreach ($this->_errors as $attributeErrors) {
|
|
|
|
if (isset($attributeErrors[0])) {
|
|
|
|
$errors[] = $attributeErrors[0];
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
return $errors;
|
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
|
|
* Returns the first error of the specified attribute.
|
|
|
|
* @param string $attribute attribute name.
|
|
|
|
* @return string the error message. Null is returned if no error.
|
|
|
|
* @see getErrors
|
|
|
|
*/
|
|
|
|
public function getFirstError($attribute)
|
|
|
|
{
|
|
|
|
return isset($this->_errors[$attribute]) ? reset($this->_errors[$attribute]) : null;
|
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
|
|
* Adds a new error to the specified attribute.
|
|
|
|
* @param string $attribute attribute name
|
|
|
|
* @param string $error new error message
|
|
|
|
*/
|
|
|
|
public function addError($attribute, $error)
|
|
|
|
{
|
|
|
|
$this->_errors[$attribute][] = $error;
|
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
|
|
* Removes errors for all attributes or a single attribute.
|
|
|
|
* @param string $attribute attribute name. Use null to remove errors for all attribute.
|
|
|
|
*/
|
|
|
|
public function clearErrors($attribute = null)
|
|
|
|
{
|
|
|
|
if ($attribute === null) {
|
|
|
|
$this->_errors = array();
|
|
|
|
} else {
|
|
|
|
unset($this->_errors[$attribute]);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
|
|
* Generates a user friendly attribute label based on the give attribute name.
|
|
|
|
* This is done by replacing underscores, dashes and dots with blanks and
|
|
|
|
* changing the first letter of each word to upper case.
|
|
|
|
* For example, 'department_name' or 'DepartmentName' will generate 'Department Name'.
|
|
|
|
* @param string $name the column name
|
|
|
|
* @return string the attribute label
|
|
|
|
*/
|
|
|
|
public function generateAttributeLabel($name)
|
|
|
|
{
|
|
|
|
return StringHelper::camel2words($name, true);
|
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
|
|
* Returns attribute values.
|
|
|
|
* @param array $names list of attributes whose value needs to be returned.
|
|
|
|
* Defaults to null, meaning all attributes listed in [[attributes()]] will be returned.
|
|
|
|
* If it is an array, only the attributes in the array will be returned.
|
|
|
|
* @param array $except list of attributes whose value should NOT be returned.
|
|
|
|
* @return array attribute values (name=>value).
|
|
|
|
*/
|
|
|
|
public function getAttributes($names = null, $except = array())
|
|
|
|
{
|
|
|
|
$values = array();
|
|
|
|
if ($names === null) {
|
|
|
|
$names = $this->attributes();
|
|
|
|
}
|
|
|
|
foreach ($names as $name) {
|
|
|
|
$values[$name] = $this->$name;
|
|
|
|
}
|
|
|
|
foreach ($except as $name) {
|
|
|
|
unset($values[$name]);
|
|
|
|
}
|
|
|
|
|
|
|
|
return $values;
|
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
|
|
* Sets the attribute values in a massive way.
|
|
|
|
* @param array $values attribute values (name=>value) to be assigned to the model.
|
|
|
|
* @param boolean $safeOnly whether the assignments should only be done to the safe attributes.
|
|
|
|
* A safe attribute is one that is associated with a validation rule in the current [[scenario]].
|
|
|
|
* @see safeAttributes()
|
|
|
|
* @see attributes()
|
|
|
|
*/
|
|
|
|
public function setAttributes($values, $safeOnly = true)
|
|
|
|
{
|
|
|
|
if (is_array($values)) {
|
|
|
|
$attributes = array_flip($safeOnly ? $this->safeAttributes() : $this->attributes());
|
|
|
|
foreach ($values as $name => $value) {
|
|
|
|
if (isset($attributes[$name])) {
|
|
|
|
$this->$name = $value;
|
|
|
|
} elseif ($safeOnly) {
|
|
|
|
$this->onUnsafeAttribute($name, $value);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
|
|
* This method is invoked when an unsafe attribute is being massively assigned.
|
|
|
|
* The default implementation will log a warning message if YII_DEBUG is on.
|
|
|
|
* It does nothing otherwise.
|
|
|
|
* @param string $name the unsafe attribute name
|
|
|
|
* @param mixed $value the attribute value
|
|
|
|
*/
|
|
|
|
public function onUnsafeAttribute($name, $value)
|
|
|
|
{
|
|
|
|
if (YII_DEBUG) {
|
|
|
|
\Yii::info("Failed to set unsafe attribute '$name' in '" . get_class($this) . "'.", __CLASS__);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
|
|
* Returns the scenario that this model is used in.
|
|
|
|
*
|
|
|
|
* Scenario affects how validation is performed and which attributes can
|
|
|
|
* be massively assigned.
|
|
|
|
*
|
|
|
|
* @return string the scenario that this model is in. Defaults to 'default'.
|
|
|
|
*/
|
|
|
|
public function getScenario()
|
|
|
|
{
|
|
|
|
return $this->_scenario;
|
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
|
|
* Sets the scenario for the model.
|
|
|
|
* @param string $value the scenario that this model is in.
|
|
|
|
* @see getScenario
|
|
|
|
*/
|
|
|
|
public function setScenario($value)
|
|
|
|
{
|
|
|
|
$this->_scenario = $value;
|
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
|
|
* Returns the attribute names that are safe to be massively assigned in the current scenario.
|
|
|
|
* @return array safe attribute names
|
|
|
|
*/
|
|
|
|
public function safeAttributes()
|
|
|
|
{
|
|
|
|
$scenario = $this->getScenario();
|
|
|
|
$scenarios = $this->scenarios();
|
|
|
|
$attributes = array();
|
|
|
|
if (isset($scenarios[$scenario])) {
|
|
|
|
foreach ($scenarios[$scenario] as $attribute) {
|
|
|
|
if ($attribute[0] !== '!') {
|
|
|
|
$attributes[] = $attribute;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
return $attributes;
|
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
|
|
* Returns the attribute names that are subject to validation in the current scenario.
|
|
|
|
* @return array safe attribute names
|
|
|
|
*/
|
|
|
|
public function activeAttributes()
|
|
|
|
{
|
|
|
|
$scenario = $this->getScenario();
|
|
|
|
$scenarios = $this->scenarios();
|
|
|
|
if (isset($scenarios[$scenario])) {
|
|
|
|
$attributes = $scenarios[$this->getScenario()];
|
|
|
|
foreach ($attributes as $i => $attribute) {
|
|
|
|
if ($attribute[0] === '!') {
|
|
|
|
$attributes[$i] = substr($attribute, 1);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
return $attributes;
|
|
|
|
} else {
|
|
|
|
return array();
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
|
|
* Returns an iterator for traversing the attributes in the model.
|
|
|
|
* This method is required by the interface IteratorAggregate.
|
|
|
|
* @return DictionaryIterator an iterator for traversing the items in the list.
|
|
|
|
*/
|
|
|
|
public function getIterator()
|
|
|
|
{
|
|
|
|
$attributes = $this->getAttributes();
|
|
|
|
return new DictionaryIterator($attributes);
|
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
|
|
* Returns whether there is an element at the specified offset.
|
|
|
|
* This method is required by the SPL interface `ArrayAccess`.
|
|
|
|
* It is implicitly called when you use something like `isset($model[$offset])`.
|
|
|
|
* @param mixed $offset the offset to check on
|
|
|
|
* @return boolean
|
|
|
|
*/
|
|
|
|
public function offsetExists($offset)
|
|
|
|
{
|
|
|
|
return $this->$offset !== null;
|
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
|
|
* Returns the element at the specified offset.
|
|
|
|
* This method is required by the SPL interface `ArrayAccess`.
|
|
|
|
* It is implicitly called when you use something like `$value = $model[$offset];`.
|
|
|
|
* @param mixed $offset the offset to retrieve element.
|
|
|
|
* @return mixed the element at the offset, null if no element is found at the offset
|
|
|
|
*/
|
|
|
|
public function offsetGet($offset)
|
|
|
|
{
|
|
|
|
return $this->$offset;
|
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
|
|
* Sets the element at the specified offset.
|
|
|
|
* This method is required by the SPL interface `ArrayAccess`.
|
|
|
|
* It is implicitly called when you use something like `$model[$offset] = $item;`.
|
|
|
|
* @param integer $offset the offset to set element
|
|
|
|
* @param mixed $item the element value
|
|
|
|
*/
|
|
|
|
public function offsetSet($offset, $item)
|
|
|
|
{
|
|
|
|
$this->$offset = $item;
|
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
|
|
* Unsets the element at the specified offset.
|
|
|
|
* This method is required by the SPL interface `ArrayAccess`.
|
|
|
|
* It is implicitly called when you use something like `unset($model[$offset])`.
|
|
|
|
* @param mixed $offset the offset to unset element
|
|
|
|
*/
|
|
|
|
public function offsetUnset($offset)
|
|
|
|
{
|
|
|
|
unset($this->$offset);
|
|
|
|
}
|
|
|
|
}
|