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387 lines
12 KiB
387 lines
12 KiB
/** |
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* Yii form widget. |
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* |
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* This is the JavaScript widget used by the yii\widgets\ActiveForm widget. |
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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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* @author Qiang Xue <qiang.xue@gmail.com> |
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* @since 2.0 |
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*/ |
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(function ($) { |
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$.fn.yiiActiveForm = function (method) { |
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if (methods[method]) { |
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return methods[method].apply(this, Array.prototype.slice.call(arguments, 1)); |
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} else if (typeof method === 'object' || !method) { |
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return methods.init.apply(this, arguments); |
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} else { |
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$.error('Method ' + method + ' does not exist on jQuery.yiiActiveForm'); |
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return false; |
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} |
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}; |
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var defaults = { |
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// the jQuery selector for the error summary |
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errorSummary: undefined, |
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// whether to perform validation before submitting the form. |
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validateOnSubmit: true, |
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// the container CSS class representing the corresponding attribute has validation error |
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errorCssClass: 'error', |
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// the container CSS class representing the corresponding attribute passes validation |
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successCssClass: 'success', |
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// the container CSS class representing the corresponding attribute is being validated |
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validatingCssClass: 'validating', |
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// the URL for performing AJAX-based validation. If not set, it will use the the form's action |
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validationUrl: undefined, |
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// a callback that is called before submitting the form. The signature of the callback should be: |
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// function ($form) { ...return false to cancel submission...} |
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beforeSubmit: undefined, |
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// a callback that is called before validating each attribute. The signature of the callback should be: |
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// function ($form, attribute, messages) { ...return false to cancel the validation...} |
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beforeValidate: undefined, |
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// the GET parameter name indicating an AJAX-based validation |
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ajaxVar: 'ajax' |
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}; |
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var attributeDefaults = { |
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// attribute name or expression (e.g. "[0]content" for tabular input) |
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name: undefined, |
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// the jQuery selector of the container of the input field |
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container: undefined, |
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// the jQuery selector of the input field |
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input: undefined, |
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// the jQuery selector of the error tag |
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error: undefined, |
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// whether to perform validation when a change is detected on the input |
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validateOnChange: false, |
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// whether to perform validation when the user is typing. |
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validateOnType: false, |
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// number of milliseconds that the validation should be delayed when a user is typing in the input field. |
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validationDelay: 200, |
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// whether to enable AJAX-based validation. |
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enableAjaxValidation: false, |
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// function (attribute, value, messages), the client-side validation function. |
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validate: undefined, |
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// status of the input field, 0: empty, not entered before, 1: validated, 2: pending validation, 3: validating |
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status: 0, |
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// the value of the input |
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value: undefined |
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}; |
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var methods = { |
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init: function (attributes, options) { |
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return this.each(function () { |
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var $form = $(this); |
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if ($form.data('yiiActiveForm')) { |
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return; |
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} |
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var settings = $.extend({}, defaults, options || {}); |
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if (settings.validationUrl === undefined) { |
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settings.validationUrl = $form.attr('action'); |
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} |
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$.each(attributes, function (i) { |
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attributes[i] = $.extend({value: getValue($form, this)}, attributeDefaults, this); |
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}); |
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$form.data('yiiActiveForm', { |
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settings: settings, |
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attributes: attributes, |
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submitting: false, |
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validated: false |
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}); |
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watchAttributes($form, attributes); |
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/** |
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* Clean up error status when the form is reset. |
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* Note that $form.on('reset', ...) does work because the "reset" event does not bubble on IE. |
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*/ |
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$form.bind('reset.yiiActiveForm', methods.resetForm); |
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if (settings.validateOnSubmit) { |
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$form.on('mouseup.yiiActiveForm keyup.yiiActiveForm', ':submit', function () { |
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$form.data('yiiActiveForm').submitObject = $(this); |
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}); |
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$form.on('submit', methods.submitForm); |
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} |
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}); |
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}, |
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destroy: function () { |
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return this.each(function () { |
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$(window).unbind('.yiiActiveForm'); |
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$(this).removeData('yiiActiveForm'); |
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}); |
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}, |
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options: function() { |
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return this.data('yiiActiveForm').settings; |
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}, |
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submitForm: function () { |
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var $form = $(this), |
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data = $form.data('yiiActiveForm'); |
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if (data.validated) { |
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// continue submitting the form since validation passes |
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data.validated = false; |
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return true; |
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} |
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if (data.settings.timer !== undefined) { |
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clearTimeout(data.settings.timer); |
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} |
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data.submitting = true; |
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if (!data.settings.beforeSubmit || data.settings.beforeSubmit($form)) { |
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validate($form, function (messages) { |
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var hasError = false; |
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$.each(data.attributes, function () { |
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hasError = updateInput($form, this, messages) || hasError; |
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}); |
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updateSummary($form, messages); |
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if (!hasError) { |
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data.validated = true; |
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var $button = data.submitObject || $form.find(':submit:first'); |
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// TODO: if the submission is caused by "change" event, it will not work |
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if ($button.length) { |
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$button.click(); |
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} else { |
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// no submit button in the form |
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$form.submit(); |
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} |
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return; |
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} |
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data.submitting = false; |
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}, function () { |
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data.submitting = false; |
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}); |
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} else { |
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data.submitting = false; |
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} |
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return false; |
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}, |
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resetForm: function () { |
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var $form = $(this); |
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var data = $form.data('yiiActiveForm'); |
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// Because we bind directly to a form reset event instead of a reset button (that may not exist), |
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// when this function is executed form input values have not been reset yet. |
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// Therefore we do the actual reset work through setTimeout. |
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setTimeout(function () { |
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$.each(data.attributes, function () { |
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// Without setTimeout() we would get the input values that are not reset yet. |
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this.value = getValue($form, this); |
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this.status = 0; |
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var $container = $form.find(this.container); |
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$container.removeClass( |
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data.settings.validatingCssClass + ' ' + |
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data.settings.errorCssClass + ' ' + |
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data.settings.successCssClass |
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); |
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$container.find(this.error).html(''); |
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}); |
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$form.find(data.settings.summary).hide().find('ul').html(''); |
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}, 1); |
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} |
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}; |
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var watchAttributes = function ($form, attributes) { |
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$.each(attributes, function (i, attribute) { |
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var $input = findInput($form, attribute); |
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if (attribute.validateOnChange) { |
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$input.on('change.yiiActiveForm', function () { |
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validateAttribute($form, attribute, false); |
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}).on('blur.yiiActiveForm', function () { |
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if (attribute.status == 0 || attribute.status == 1) { |
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validateAttribute($form, attribute, !attribute.status); |
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} |
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}); |
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} |
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if (attribute.validateOnType) { |
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$input.on('keyup.yiiActiveForm', function () { |
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if (attribute.value !== getValue($form, attribute)) { |
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validateAttribute($form, attribute, false); |
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} |
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}); |
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} |
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}); |
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}; |
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var validateAttribute = function ($form, attribute, forceValidate) { |
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var data = $form.data('yiiActiveForm'); |
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if (forceValidate) { |
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attribute.status = 2; |
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} |
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$.each(data.attributes, function () { |
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if (this.value !== getValue($form, this)) { |
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this.status = 2; |
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forceValidate = true; |
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} |
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}); |
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if (!forceValidate) { |
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return; |
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} |
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if (data.settings.timer !== undefined) { |
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clearTimeout(data.settings.timer); |
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} |
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data.settings.timer = setTimeout(function () { |
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if (data.submitting || $form.is(':hidden')) { |
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return; |
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} |
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$.each(data.attributes, function () { |
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if (this.status === 2) { |
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this.status = 3; |
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$form.find(this.container).addClass(data.settings.validatingCssClass); |
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} |
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}); |
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validate($form, function (messages) { |
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var hasError = false; |
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$.each(data.attributes, function () { |
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if (this.status === 2 || this.status === 3) { |
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hasError = updateInput($form, this, messages) || hasError; |
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} |
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}); |
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}); |
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}, data.settings.validationDelay); |
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}; |
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/** |
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* Performs validation. |
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* @param $form jQuery the jquery representation of the form |
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* @param successCallback function the function to be invoked if the validation completes |
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* @param errorCallback function the function to be invoked if the ajax validation request fails |
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*/ |
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var validate = function ($form, successCallback, errorCallback) { |
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var data = $form.data('yiiActiveForm'), |
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needAjaxValidation = false, |
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messages = {}; |
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$.each(data.attributes, function () { |
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if (data.submitting || this.status === 2 || this.status === 3) { |
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var msg = []; |
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if (!data.settings.beforeValidate || data.settings.beforeValidate($form, this, msg)) { |
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if (this.validate) { |
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this.validate(this, getValue($form, this), msg); |
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} |
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if (msg.length) { |
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messages[this.name] = msg; |
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} else if (this.enableAjaxValidation) { |
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needAjaxValidation = true; |
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} |
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} |
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} |
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}); |
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if (needAjaxValidation && (!data.submitting || $.isEmptyObject(messages))) { |
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// Perform ajax validation when at least one input needs it. |
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// If the validation is triggered by form submission, ajax validation |
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// should be done only when all inputs pass client validation |
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var $button = data.submitObject, |
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extData = '&' + data.settings.ajaxVar + '=' + $form.attr('id'); |
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if ($button && $button.length && $button.attr('name')) { |
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extData += '&' + $button.attr('name') + '=' + $button.attr('value'); |
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} |
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$.ajax({ |
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url: data.settings.validationUrl, |
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type: $form.attr('method'), |
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data: $form.serialize() + extData, |
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dataType: 'json', |
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success: function (msgs) { |
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if (msgs !== null && typeof msgs === 'object') { |
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$.each(data.attributes, function () { |
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if (!this.enableAjaxValidation) { |
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delete msgs[this.name]; |
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} |
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}); |
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successCallback($.extend({}, messages, msgs)); |
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} else { |
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successCallback(messages); |
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} |
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}, |
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error: errorCallback |
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}); |
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} else if (data.submitting) { |
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// delay callback so that the form can be submitted without problem |
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setTimeout(function () { |
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successCallback(messages); |
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}, 200); |
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} else { |
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successCallback(messages); |
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} |
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}; |
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/** |
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* Updates the error message and the input container for a particular attribute. |
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* @param $form the form jQuery object |
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* @param attribute object the configuration for a particular attribute. |
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* @param messages array the validation error messages |
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* @return boolean whether there is a validation error for the specified attribute |
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*/ |
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var updateInput = function ($form, attribute, messages) { |
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var data = $form.data('yiiActiveForm'), |
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$input = findInput($form, attribute), |
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hasError = false; |
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attribute.status = 1; |
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if ($input.length) { |
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hasError = messages && $.isArray(messages[attribute.name]) && messages[attribute.name].length; |
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var $container = $form.find(attribute.container); |
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var $error = $container.find(attribute.error); |
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if (hasError) { |
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$error.html(messages[attribute.name][0]); |
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$container.removeClass(data.settings.validatingCssClass + ' ' + data.settings.successCssClass) |
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.addClass(data.settings.errorCssClass); |
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} else { |
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$error.html(''); |
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$container.removeClass(data.settings.validatingCssClass + ' ' + data.settings.errorCssClass + ' ') |
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.addClass(data.settings.successCssClass); |
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} |
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attribute.value = getValue($form, attribute); |
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} |
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return hasError; |
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}; |
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/** |
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* Updates the error summary. |
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* @param $form the form jQuery object |
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* @param messages array the validation error messages |
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*/ |
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var updateSummary = function ($form, messages) { |
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var data = $form.data('yiiActiveForm'), |
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$summary = $form.find(data.settings.errorSummary), |
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content = ''; |
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if ($summary.length && messages) { |
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$.each(data.attributes, function () { |
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if ($.isArray(messages[this.name]) && messages[this.name].length) { |
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content += '<li>' + messages[this.name][0] + '</li>'; |
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} |
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}); |
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$summary.toggle(content !== '').find('ul').html(content); |
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} |
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}; |
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var getValue = function ($form, attribute) { |
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var $input = findInput($form, attribute); |
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var type = $input.attr('type'); |
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if (type === 'checkbox' || type === 'radio') { |
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return $input.filter(':checked').val(); |
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} else { |
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return $input.val(); |
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} |
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}; |
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var findInput = function ($form, attribute) { |
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var $input = $form.find(attribute.input); |
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if ($input.length && $input[0].tagName.toLowerCase() === 'div') { |
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// checkbox list or radio list |
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return $input.find('input'); |
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} else { |
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return $input; |
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} |
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}; |
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})(window.jQuery); |