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