diff options
Diffstat (limited to 'railties/lib/rails')
-rw-r--r-- | railties/lib/rails/generators/rails/app/templates/public/javascripts/jquery_ujs.js | 292 |
1 files changed, 143 insertions, 149 deletions
diff --git a/railties/lib/rails/generators/rails/app/templates/public/javascripts/jquery_ujs.js b/railties/lib/rails/generators/rails/app/templates/public/javascripts/jquery_ujs.js index 668cffa73a..4dcb3779a2 100644 --- a/railties/lib/rails/generators/rails/app/templates/public/javascripts/jquery_ujs.js +++ b/railties/lib/rails/generators/rails/app/templates/public/javascripts/jquery_ujs.js @@ -1,154 +1,148 @@ -/* - * jquery-ujs - * - * http://github.com/rails/jquery-ujs/blob/master/src/rails.js - * - * This rails.js file supports jQuery 1.4.3 and 1.4.4 . +/** + * Unobtrusive scripting adapter for jQuery * + * Requires jQuery 1.4.3 or later. + * https://github.com/rails/jquery-ujs */ -jQuery(function ($) { - var csrf_token = $('meta[name=csrf-token]').attr('content'), - csrf_param = $('meta[name=csrf-param]').attr('content'); - - $.fn.extend({ - /** - * Triggers a custom event on an element and returns the event result - * this is used to get around not being able to ensure callbacks are placed - * at the end of the chain. - */ - triggerAndReturn: function (name, data) { - var event = new $.Event(name); - this.trigger(event, data); - - return event.result !== false; - }, - - /** - * Handles execution of remote calls. Provides following callbacks: - * - * - ajax:beforeSend - is executed before firing ajax call - * - ajax:success - is executed when status is success - * - ajax:complete - is executed when the request finishes, whether in failure or success - * - ajax:error - is execute in case of error - */ - callRemote: function () { - var el = this, - method = el.attr('method') || el.attr('data-method') || 'GET', - url = el.attr('action') || el.attr('href'), - dataType = el.attr('data-type') || ($.ajaxSettings && $.ajaxSettings.dataType); - - if (url === undefined) { - throw "No URL specified for remote call (action or href must be present)."; - } else { - var $this = $(this), data = el.is('form') ? el.serializeArray() : []; - - $.ajax({ - url: url, - data: data, - dataType: dataType, - type: method.toUpperCase(), - beforeSend: function (xhr) { - if ($this.triggerHandler('ajax:beforeSend') === false) { - return false; - } - }, - success: function (data, status, xhr) { - el.trigger('ajax:success', [data, status, xhr]); - }, - complete: function (xhr) { - el.trigger('ajax:complete', xhr); - }, - error: function (xhr, status, error) { - el.trigger('ajax:error', [xhr, status, error]); - } - }); - } - } - }); - - /** - * confirmation handler - */ - $('body').delegate('a[data-confirm], button[data-confirm], input[data-confirm]', 'click.rails', function () { - var el = $(this); - if (el.triggerAndReturn('confirm')) { - if (!confirm(el.attr('data-confirm'))) { - return false; - } - } - }); - - - - /** - * remote handlers - */ - $('form[data-remote]').live('submit.rails', function (e) { - $(this).callRemote(); - e.preventDefault(); - }); - - $('a[data-remote],input[data-remote]').live('click.rails', function (e) { - $(this).callRemote(); - e.preventDefault(); - }); - - /** - * <%= link_to "Delete", user_path(@user), :method => :delete, :confirm => "Are you sure?" %> - * - * <a href="/users/5" data-confirm="Are you sure?" data-method="delete" rel="nofollow">Delete</a> - */ - $('a[data-method]:not([data-remote])').live('click.rails', function (e){ - var link = $(this), - href = link.attr('href'), - method = link.attr('data-method'), - form = $('<form method="post" action="'+href+'"></form>'), - metadata_input = '<input name="_method" value="'+method+'" type="hidden" />'; - - if (csrf_param !== undefined && csrf_token !== undefined) { - metadata_input += '<input name="'+csrf_param+'" value="'+csrf_token+'" type="hidden" />'; - } - - form.hide() - .append(metadata_input) - .appendTo('body'); - - e.preventDefault(); - form.submit(); - }); - - /** - * disable-with handlers - */ - var disable_with_input_selector = 'input[data-disable-with]', - disable_with_form_remote_selector = 'form[data-remote]:has(' + disable_with_input_selector + ')', - disable_with_form_not_remote_selector = 'form:not([data-remote]):has(' + disable_with_input_selector + ')'; - - var disable_with_input_function = function () { - $(this).find(disable_with_input_selector).each(function () { - var input = $(this); - input.data('enable-with', input.val()) - .attr('value', input.attr('data-disable-with')) - .attr('disabled', 'disabled'); - }); - }; - - $(disable_with_form_remote_selector).live('ajax:before.rails', disable_with_input_function); - $(disable_with_form_not_remote_selector).live('submit.rails', disable_with_input_function); - - $(disable_with_form_remote_selector).live('ajax:complete.rails', function () { - $(this).find(disable_with_input_selector).each(function () { - var input = $(this); - input.removeAttr('disabled') - .val(input.data('enable-with')); - }); - }); - - var jqueryVersion = $().jquery; - - if (!( (jqueryVersion === '1.4.3') || (jqueryVersion === '1.4.4'))){ - alert('This rails.js does not support the jQuery version you are using. Please read documentation.'); +(function($) { + // Triggers an event on an element and returns the event result + function fire(obj, name, data) { + var event = new $.Event(name); + obj.trigger(event, data); + return event.result !== false; + } + + // Submits "remote" forms and links with ajax + function handleRemote(element) { + var method, url, data, + dataType = element.attr('data-type') || ($.ajaxSettings && $.ajaxSettings.dataType); + + if (element.is('form')) { + method = element.attr('method'); + url = element.attr('action'); + data = element.serializeArray(); + // memoized value from clicked submit button + var button = element.data('ujs:submit-button'); + if (button) { + data.push(button); + element.data('ujs:submit-button', null); + } + } else { + method = element.attr('data-method'); + url = element.attr('href'); + data = null; + } + + $.ajax({ + url: url, type: method || 'GET', data: data, dataType: dataType, + // stopping the "ajax:beforeSend" event will cancel the ajax request + beforeSend: function(xhr, settings) { + if (settings.dataType === undefined) { + xhr.setRequestHeader('accept', '*/*;q=0.5, ' + settings.accepts.script); + } + return fire(element, 'ajax:beforeSend', [xhr, settings]); + }, + success: function(data, status, xhr) { + element.trigger('ajax:success', [data, status, xhr]); + }, + complete: function(xhr, status) { + element.trigger('ajax:complete', [xhr, status]); + }, + error: function(xhr, status, error) { + element.trigger('ajax:error', [xhr, status, error]); + } + }); + } + + // Handles "data-method" on links such as: + // <a href="/users/5" data-method="delete" rel="nofollow" data-confirm="Are you sure?">Delete</a> + function handleMethod(link) { + var href = link.attr('href'), + method = link.attr('data-method'), + csrf_token = $('meta[name=csrf-token]').attr('content'), + csrf_param = $('meta[name=csrf-param]').attr('content'), + form = $('<form method="post" action="' + href + '"></form>'), + metadata_input = '<input name="_method" value="' + method + '" type="hidden" />'; + + if (csrf_param !== undefined && csrf_token !== undefined) { + metadata_input += '<input name="' + csrf_param + '" value="' + csrf_token + '" type="hidden" />'; + } + + form.hide().append(metadata_input).appendTo('body'); + form.submit(); + } + + function disableFormElements(form) { + form.find('input[data-disable-with]').each(function() { + var input = $(this); + input.data('ujs:enable-with', input.val()) + .val(input.attr('data-disable-with')) + .attr('disabled', 'disabled'); + }); + } + + function enableFormElements(form) { + form.find('input[data-disable-with]').each(function() { + var input = $(this); + input.val(input.data('ujs:enable-with')).removeAttr('disabled'); + }); + } + + function allowAction(element) { + var message = element.attr('data-confirm'); + return !message || (fire(element, 'confirm') && confirm(message)); + } + + function requiredValuesMissing(form) { + var missing = false; + form.find('input[name][required]').each(function() { + if (!$(this).val()) missing = true; + }); + return missing; } -}); + $('a[data-confirm], a[data-method], a[data-remote]').live('click.rails', function(e) { + var link = $(this); + if (!allowAction(link)) return false; + + if (link.attr('data-remote') != undefined) { + handleRemote(link); + return false; + } else if (link.attr('data-method')) { + handleMethod(link); + return false; + } + }); + + $('form').live('submit.rails', function(e) { + var form = $(this), remote = form.attr('data-remote') != undefined; + if (!allowAction(form)) return false; + + // skip other logic when required values are missing + if (requiredValuesMissing(form)) return !remote; + + if (remote) { + handleRemote(form); + return false; + } else { + disableFormElements(form); + } + }); + + $('form input[type=submit], form button[type=submit], form button:not([type])').live('click.rails', function() { + var button = $(this); + if (!allowAction(button)) return false; + // register the pressed submit button + var name = button.attr('name'), data = name ? {name:name, value:button.val()} : null; + button.closest('form').data('ujs:submit-button', data); + }); + + $('form').live('ajax:beforeSend.rails', function(event) { + if (this == event.target) disableFormElements($(this)); + }); + + $('form').live('ajax:complete.rails', function(event) { + if (this == event.target) enableFormElements($(this)); + }); +})( jQuery ); |