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@ -1,202 +1,390 @@ |
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(function() { |
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Ajax.Responders.register({ |
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onCreate: function(request) { |
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var token = $$('meta[name=csrf-token]')[0]; |
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if (token) { |
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if (!request.options.requestHeaders) request.options.requestHeaders = {}; |
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request.options.requestHeaders['X-CSRF-Token'] = token.readAttribute('content'); |
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(function($, undefined) { |
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|
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/** |
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* Unobtrusive scripting adapter for jQuery |
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* |
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* Requires jQuery 1.6.0 or later. |
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* https://github.com/rails/jquery-ujs
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|
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* Uploading file using rails.js |
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* ============================= |
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* |
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* By default, browsers do not allow files to be uploaded via AJAX. As a result, if there are any non-blank file fields |
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* in the remote form, this adapter aborts the AJAX submission and allows the form to submit through standard means. |
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* |
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* The `ajax:aborted:file` event allows you to bind your own handler to process the form submission however you wish. |
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* |
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* Ex: |
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* $('form').live('ajax:aborted:file', function(event, elements){ |
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* // Implement own remote file-transfer handler here for non-blank file inputs passed in `elements`.
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* // Returning false in this handler tells rails.js to disallow standard form submission
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* return false; |
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* }); |
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* |
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* The `ajax:aborted:file` event is fired when a file-type input is detected with a non-blank value. |
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* |
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* Third-party tools can use this hook to detect when an AJAX file upload is attempted, and then use |
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* techniques like the iframe method to upload the file instead. |
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* |
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* Required fields in rails.js |
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* =========================== |
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* |
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* If any blank required inputs (required="required") are detected in the remote form, the whole form submission |
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* is canceled. Note that this is unlike file inputs, which still allow standard (non-AJAX) form submission. |
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* |
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* The `ajax:aborted:required` event allows you to bind your own handler to inform the user of blank required inputs. |
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* |
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* !! Note that Opera does not fire the form's submit event if there are blank required inputs, so this event may never |
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* get fired in Opera. This event is what causes other browsers to exhibit the same submit-aborting behavior. |
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* |
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* Ex: |
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* $('form').live('ajax:aborted:required', function(event, elements){ |
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* // Returning false in this handler tells rails.js to submit the form anyway.
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* // The blank required inputs are passed to this function in `elements`.
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* return ! confirm("Would you like to submit the form with missing info?"); |
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* }); |
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*/ |
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|
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// Shorthand to make it a little easier to call public rails functions from within rails.js
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var rails; |
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$.rails = rails = { |
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// Link elements bound by jquery-ujs
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linkClickSelector: 'a[data-confirm], a[data-method], a[data-remote], a[data-disable-with]', |
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|
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// Select elements bound by jquery-ujs
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inputChangeSelector: 'select[data-remote], input[data-remote], textarea[data-remote]', |
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|
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// Form elements bound by jquery-ujs
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formSubmitSelector: 'form', |
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|
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// Form input elements bound by jquery-ujs
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formInputClickSelector: 'form input[type=submit], form input[type=image], form button[type=submit], form button:not([type])', |
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|
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// Form input elements disabled during form submission
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disableSelector: 'input[data-disable-with], button[data-disable-with], textarea[data-disable-with]', |
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|
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// Form input elements re-enabled after form submission
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enableSelector: 'input[data-disable-with]:disabled, button[data-disable-with]:disabled, textarea[data-disable-with]:disabled', |
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|
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// Form required input elements
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requiredInputSelector: 'input[name][required]:not([disabled]),textarea[name][required]:not([disabled])', |
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|
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// Form file input elements
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fileInputSelector: 'input:file', |
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|
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// Link onClick disable selector with possible reenable after remote submission
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linkDisableSelector: 'a[data-disable-with]', |
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|
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// Make sure that every Ajax request sends the CSRF token
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CSRFProtection: function(xhr) { |
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var token = $('meta[name="csrf-token"]').attr('content'); |
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if (token) xhr.setRequestHeader('X-CSRF-Token', token); |
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}, |
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|
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// Triggers an event on an element and returns false if the event result is false
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fire: function(obj, name, data) { |
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var event = $.Event(name); |
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obj.trigger(event, data); |
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return event.result !== false; |
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}, |
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|
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// Default confirm dialog, may be overridden with custom confirm dialog in $.rails.confirm
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confirm: function(message) { |
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return confirm(message); |
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}, |
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|
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// Default ajax function, may be overridden with custom function in $.rails.ajax
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ajax: function(options) { |
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return $.ajax(options); |
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}, |
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// Default way to get an element's href. May be overridden at $.rails.href.
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href: function(element) { |
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return element.attr('href'); |
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}, |
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|
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// Submits "remote" forms and links with ajax
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handleRemote: function(element) { |
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var method, url, data, elCrossDomain, crossDomain, dataType, options; |
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if (rails.fire(element, 'ajax:before')) { |
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elCrossDomain = element.data('cross-domain'); |
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crossDomain = elCrossDomain === undefined ? null : elCrossDomain; |
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dataType = element.data('type') || ($.ajaxSettings && $.ajaxSettings.dataType); |
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|
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if (element.is('form')) { |
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method = element.attr('method'); |
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url = element.attr('action'); |
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data = element.serializeArray(); |
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// memoized value from clicked submit button
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var button = element.data('ujs:submit-button'); |
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if (button) { |
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data.push(button); |
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element.data('ujs:submit-button', null); |
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} |
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} else if (element.is(rails.inputChangeSelector)) { |
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method = element.data('method'); |
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url = element.data('url'); |
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data = element.serialize(); |
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if (element.data('params')) data = data + "&" + element.data('params'); |
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} else { |
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method = element.data('method'); |
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url = rails.href(element); |
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data = element.data('params') || null; |
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} |
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}); |
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|
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// Technique from Juriy Zaytsev
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// http://thinkweb2.com/projects/prototype/detecting-event-support-without-browser-sniffing/
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function isEventSupported(eventName) { |
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var el = document.createElement('div'); |
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eventName = 'on' + eventName; |
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var isSupported = (eventName in el); |
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if (!isSupported) { |
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el.setAttribute(eventName, 'return;'); |
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isSupported = typeof el[eventName] == 'function'; |
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options = { |
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type: method || 'GET', data: data, dataType: dataType, crossDomain: crossDomain, |
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// stopping the "ajax:beforeSend" event will cancel the ajax request
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beforeSend: function(xhr, settings) { |
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if (settings.dataType === undefined) { |
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xhr.setRequestHeader('accept', '*/*;q=0.5, ' + settings.accepts.script); |
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} |
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el = null; |
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return isSupported; |
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return rails.fire(element, 'ajax:beforeSend', [xhr, settings]); |
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}, |
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success: function(data, status, xhr) { |
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element.trigger('ajax:success', [data, status, xhr]); |
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}, |
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complete: function(xhr, status) { |
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element.trigger('ajax:complete', [xhr, status]); |
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}, |
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error: function(xhr, status, error) { |
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element.trigger('ajax:error', [xhr, status, error]); |
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} |
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}; |
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// Only pass url to `ajax` options if not blank
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if (url) { options.url = url; } |
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function isForm(element) { |
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return Object.isElement(element) && element.nodeName.toUpperCase() == 'FORM'; |
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var jqxhr = rails.ajax(options); |
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element.trigger('ajax:send', jqxhr); |
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return jqxhr; |
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} else { |
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return false; |
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} |
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}, |
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function isInput(element) { |
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if (Object.isElement(element)) { |
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var name = element.nodeName.toUpperCase(); |
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return name == 'INPUT' || name == 'SELECT' || name == 'TEXTAREA'; |
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} |
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else return false; |
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// Handles "data-method" on links such as:
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// <a href="/users/5" data-method="delete" rel="nofollow" data-confirm="Are you sure?">Delete</a>
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handleMethod: function(link) { |
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var href = rails.href(link), |
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method = link.data('method'), |
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target = link.attr('target'), |
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csrf_token = $('meta[name=csrf-token]').attr('content'), |
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csrf_param = $('meta[name=csrf-param]').attr('content'), |
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form = $('<form method="post" action="' + href + '"></form>'), |
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metadata_input = '<input name="_method" value="' + method + '" type="hidden" />'; |
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if (csrf_param !== undefined && csrf_token !== undefined) { |
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metadata_input += '<input name="' + csrf_param + '" value="' + csrf_token + '" type="hidden" />'; |
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} |
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var submitBubbles = isEventSupported('submit'), |
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changeBubbles = isEventSupported('change'); |
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if (target) { form.attr('target', target); } |
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if (!submitBubbles || !changeBubbles) { |
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// augment the Event.Handler class to observe custom events when needed
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Event.Handler.prototype.initialize = Event.Handler.prototype.initialize.wrap( |
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function(init, element, eventName, selector, callback) { |
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init(element, eventName, selector, callback); |
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// is the handler being attached to an element that doesn't support this event?
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if ( (!submitBubbles && this.eventName == 'submit' && !isForm(this.element)) || |
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(!changeBubbles && this.eventName == 'change' && !isInput(this.element)) ) { |
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// "submit" => "emulated:submit"
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this.eventName = 'emulated:' + this.eventName; |
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} |
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} |
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); |
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} |
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form.hide().append(metadata_input).appendTo('body'); |
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form.submit(); |
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}, |
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if (!submitBubbles) { |
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// discover forms on the page by observing focus events which always bubble
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document.on('focusin', 'form', function(focusEvent, form) { |
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// special handler for the real "submit" event (one-time operation)
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if (!form.retrieve('emulated:submit')) { |
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form.on('submit', function(submitEvent) { |
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var emulated = form.fire('emulated:submit', submitEvent, true); |
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// if custom event received preventDefault, cancel the real one too
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if (emulated.returnValue === false) submitEvent.preventDefault(); |
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/* Disables form elements: |
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- Caches element value in 'ujs:enable-with' data store |
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- Replaces element text with value of 'data-disable-with' attribute |
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- Sets disabled property to true |
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*/ |
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disableFormElements: function(form) { |
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form.find(rails.disableSelector).each(function() { |
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var element = $(this), method = element.is('button') ? 'html' : 'val'; |
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element.data('ujs:enable-with', element[method]()); |
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element[method](element.data('disable-with')); |
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element.prop('disabled', true); |
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}); |
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form.store('emulated:submit', true); |
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} |
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}, |
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/* Re-enables disabled form elements: |
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- Replaces element text with cached value from 'ujs:enable-with' data store (created in `disableFormElements`) |
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- Sets disabled property to false |
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*/ |
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enableFormElements: function(form) { |
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form.find(rails.enableSelector).each(function() { |
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var element = $(this), method = element.is('button') ? 'html' : 'val'; |
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if (element.data('ujs:enable-with')) element[method](element.data('ujs:enable-with')); |
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element.prop('disabled', false); |
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}); |
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}, |
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|
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/* For 'data-confirm' attribute: |
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- Fires `confirm` event |
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- Shows the confirmation dialog |
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- Fires the `confirm:complete` event |
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Returns `true` if no function stops the chain and user chose yes; `false` otherwise. |
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Attaching a handler to the element's `confirm` event that returns a `falsy` value cancels the confirmation dialog. |
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Attaching a handler to the element's `confirm:complete` event that returns a `falsy` value makes this function |
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return false. The `confirm:complete` event is fired whether or not the user answered true or false to the dialog. |
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*/ |
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allowAction: function(element) { |
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var message = element.data('confirm'), |
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answer = false, callback; |
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if (!message) { return true; } |
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if (rails.fire(element, 'confirm')) { |
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answer = rails.confirm(message); |
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callback = rails.fire(element, 'confirm:complete', [answer]); |
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} |
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return answer && callback; |
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}, |
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if (!changeBubbles) { |
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// discover form inputs on the page
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document.on('focusin', 'input, select, textarea', function(focusEvent, input) { |
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// special handler for real "change" events
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if (!input.retrieve('emulated:change')) { |
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input.on('change', function(changeEvent) { |
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input.fire('emulated:change', changeEvent, true); |
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}); |
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input.store('emulated:change', true); |
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// Helper function which checks for blank inputs in a form that match the specified CSS selector
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blankInputs: function(form, specifiedSelector, nonBlank) { |
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var inputs = $(), input, |
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selector = specifiedSelector || 'input,textarea'; |
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form.find(selector).each(function() { |
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input = $(this); |
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// Collect non-blank inputs if nonBlank option is true, otherwise, collect blank inputs
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if (nonBlank ? input.val() : !input.val()) { |
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inputs = inputs.add(input); |
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} |
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}); |
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} |
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return inputs.length ? inputs : false; |
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}, |
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function handleRemote(element) { |
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var method, url, params; |
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// Helper function which checks for non-blank inputs in a form that match the specified CSS selector
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nonBlankInputs: function(form, specifiedSelector) { |
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return rails.blankInputs(form, specifiedSelector, true); // true specifies nonBlank
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}, |
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var event = element.fire("ajax:before"); |
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if (event.stopped) return false; |
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// Helper function, needed to provide consistent behavior in IE
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stopEverything: function(e) { |
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$(e.target).trigger('ujs:everythingStopped'); |
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e.stopImmediatePropagation(); |
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return false; |
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}, |
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if (element.tagName.toLowerCase() === 'form') { |
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method = element.readAttribute('method') || 'post'; |
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url = element.readAttribute('action'); |
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// serialize the form with respect to the submit button that was pressed
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params = element.serialize({ submit: element.retrieve('rails:submit-button') }); |
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// clear the pressed submit button information
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element.store('rails:submit-button', null); |
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} else { |
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method = element.readAttribute('data-method') || 'get'; |
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url = element.readAttribute('href'); |
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params = {}; |
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// find all the submit events directly bound to the form and
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// manually invoke them. If anyone returns false then stop the loop
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callFormSubmitBindings: function(form, event) { |
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var events = form.data('events'), continuePropagation = true; |
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if (events !== undefined && events['submit'] !== undefined) { |
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$.each(events['submit'], function(i, obj){ |
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if (typeof obj.handler === 'function') return continuePropagation = obj.handler(event); |
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}); |
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} |
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return continuePropagation; |
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}, |
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new Ajax.Request(url, { |
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method: method, |
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parameters: params, |
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evalScripts: true, |
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onCreate: function(response) { element.fire("ajax:create", response); }, |
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onComplete: function(response) { element.fire("ajax:complete", response); }, |
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onSuccess: function(response) { element.fire("ajax:success", response); }, |
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onFailure: function(response) { element.fire("ajax:failure", response); } |
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// replace element's html with the 'data-disable-with' after storing original html
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// and prevent clicking on it
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disableElement: function(element) { |
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element.data('ujs:enable-with', element.html()); // store enabled state
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element.html(element.data('disable-with')); // set to disabled state
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element.bind('click.railsDisable', function(e) { // prevent further clicking
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return rails.stopEverything(e) |
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}); |
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}, |
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element.fire("ajax:after"); |
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// restore element to its original state which was disabled by 'disableElement' above
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enableElement: function(element) { |
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if (element.data('ujs:enable-with') !== undefined) { |
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element.html(element.data('ujs:enable-with')); // set to old enabled state
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// this should be element.removeData('ujs:enable-with')
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// but, there is currently a bug in jquery which makes hyphenated data attributes not get removed
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element.data('ujs:enable-with', false); // clean up cache
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} |
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function insertHiddenField(form, name, value) { |
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form.insert(new Element('input', { type: 'hidden', name: name, value: value })); |
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element.unbind('click.railsDisable'); // enable element
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} |
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function handleMethod(element) { |
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var method = element.readAttribute('data-method'), |
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url = element.readAttribute('href'), |
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csrf_param = $$('meta[name=csrf-param]')[0], |
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csrf_token = $$('meta[name=csrf-token]')[0]; |
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}; |
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|
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var form = new Element('form', { method: "POST", action: url, style: "display: none;" }); |
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$(element.parentNode).insert(form); |
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if (rails.fire($(document), 'rails:attachBindings')) { |
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|
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if (method !== 'post') { |
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insertHiddenField(form, '_method', method); |
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} |
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$.ajaxPrefilter(function(options, originalOptions, xhr){ if ( !options.crossDomain ) { rails.CSRFProtection(xhr); }}); |
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|
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if (csrf_param) { |
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insertHiddenField(form, csrf_param.readAttribute('content'), csrf_token.readAttribute('content')); |
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} |
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$(document).delegate(rails.linkDisableSelector, 'ajax:complete', function() { |
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rails.enableElement($(this)); |
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}); |
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|
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form.submit(); |
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} |
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$(document).delegate(rails.linkClickSelector, 'click click.rails', function(e) { |
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var link = $(this), method = link.data('method'), data = link.data('params'); |
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if (!rails.allowAction(link)) return rails.stopEverything(e); |
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|
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function disableFormElements(form) { |
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form.select('input[type=submit][data-disable-with]').each(function(input) { |
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input.store('rails:original-value', input.getValue()); |
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input.setValue(input.readAttribute('data-disable-with')).disable(); |
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}); |
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if (link.is(rails.linkDisableSelector)) rails.disableElement(link); |
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|
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if (link.data('remote') !== undefined) { |
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if ( (e.metaKey || e.ctrlKey) && (!method || method === 'GET') && !data ) { return true; } |
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|
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if (rails.handleRemote(link) === false) { rails.enableElement(link); } |
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return false; |
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|
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} else if (link.data('method')) { |
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rails.handleMethod(link); |
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return false; |
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} |
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}); |
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|
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$(document).delegate(rails.inputChangeSelector, 'change.rails', function(e) { |
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var link = $(this); |
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if (!rails.allowAction(link)) return rails.stopEverything(e); |
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|
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function enableFormElements(form) { |
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form.select('input[type=submit][data-disable-with]').each(function(input) { |
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input.setValue(input.retrieve('rails:original-value')).enable(); |
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rails.handleRemote(link); |
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return false; |
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}); |
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|
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$(document).delegate(rails.formSubmitSelector, 'submit.rails', function(e) { |
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var form = $(this), |
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remote = form.data('remote') !== undefined, |
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blankRequiredInputs = rails.blankInputs(form, rails.requiredInputSelector), |
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nonBlankFileInputs = rails.nonBlankInputs(form, rails.fileInputSelector); |
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|
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if (!rails.allowAction(form)) return rails.stopEverything(e); |
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|
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// skip other logic when required values are missing or file upload is present
|
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if (blankRequiredInputs && form.attr("novalidate") == undefined && rails.fire(form, 'ajax:aborted:required', [blankRequiredInputs])) { |
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return rails.stopEverything(e); |
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} |
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|
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function allowAction(element) { |
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var message = element.readAttribute('data-confirm'); |
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return !message || confirm(message); |
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if (remote) { |
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if (nonBlankFileInputs) { |
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return rails.fire(form, 'ajax:aborted:file', [nonBlankFileInputs]); |
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} |
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|
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document.on('click', 'a[data-confirm], a[data-remote], a[data-method]', function(event, link) { |
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if (!allowAction(link)) { |
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event.stop(); |
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// If browser does not support submit bubbling, then this live-binding will be called before direct
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// bindings. Therefore, we should directly call any direct bindings before remotely submitting form.
|
||||
if (!$.support.submitBubbles && $().jquery < '1.7' && rails.callFormSubmitBindings(form, e) === false) return rails.stopEverything(e); |
||||
|
||||
rails.handleRemote(form); |
||||
return false; |
||||
} |
||||
|
||||
if (link.readAttribute('data-remote')) { |
||||
handleRemote(link); |
||||
event.stop(); |
||||
} else if (link.readAttribute('data-method')) { |
||||
handleMethod(link); |
||||
event.stop(); |
||||
} else { |
||||
// slight timeout so that the submit button gets properly serialized
|
||||
setTimeout(function(){ rails.disableFormElements(form); }, 13); |
||||
} |
||||
}); |
||||
|
||||
document.on("click", "form input[type=submit], form button[type=submit], form button:not([type])", function(event, button) { |
||||
// register the pressed submit button
|
||||
event.findElement('form').store('rails:submit-button', button.name || false); |
||||
}); |
||||
$(document).delegate(rails.formInputClickSelector, 'click.rails', function(event) { |
||||
var button = $(this); |
||||
|
||||
document.on("submit", function(event) { |
||||
var form = event.findElement(); |
||||
if (!rails.allowAction(button)) return rails.stopEverything(event); |
||||
|
||||
if (!allowAction(form)) { |
||||
event.stop(); |
||||
return false; |
||||
} |
||||
// register the pressed submit button
|
||||
var name = button.attr('name'), |
||||
data = name ? {name:name, value:button.val()} : null; |
||||
|
||||
if (form.readAttribute('data-remote')) { |
||||
handleRemote(form); |
||||
event.stop(); |
||||
} else { |
||||
disableFormElements(form); |
||||
} |
||||
button.closest('form').data('ujs:submit-button', data); |
||||
}); |
||||
|
||||
document.on('ajax:create', 'form', function(event, form) { |
||||
if (form == event.findElement()) disableFormElements(form); |
||||
$(document).delegate(rails.formSubmitSelector, 'ajax:beforeSend.rails', function(event) { |
||||
if (this == event.target) rails.disableFormElements($(this)); |
||||
}); |
||||
|
||||
document.on('ajax:complete', 'form', function(event, form) { |
||||
if (form == event.findElement()) enableFormElements(form); |
||||
$(document).delegate(rails.formSubmitSelector, 'ajax:complete.rails', function(event) { |
||||
if (this == event.target) rails.enableFormElements($(this)); |
||||
}); |
||||
})(); |
||||
|
||||
$(function(){ |
||||
// making sure that all forms have actual up-to-date token(cached forms contain old one)
|
||||
csrf_token = $('meta[name=csrf-token]').attr('content'); |
||||
csrf_param = $('meta[name=csrf-param]').attr('content'); |
||||
$('form input[name="' + csrf_param + '"]').val(csrf_token); |
||||
}); |
||||
} |
||||
|
||||
})( jQuery ); |
Loading…
Reference in new issue