Skip to content

Instantly share code, notes, and snippets.

@joemocha
Created November 15, 2010 03:06
  • Star 0 You must be signed in to star a gist
  • Fork 0 You must be signed in to fork a gist
Star You must be signed in to star a gist
Save joemocha/676367 to your computer and use it in GitHub Desktop.
include this in your application.haml.html
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.
*
* TODO: deprecate with jQuery 1.4.2 release, in favor of subscribing to our
* own events and placing ourselves 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 firing overridable events along the way
*/
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') || 'script';
if (url === undefined) {
throw "No URL specified for remote call (action or href must be present).";
} else {
if (el.triggerAndReturn('ajax:before')) {
var data = el.is('form') ? el.serializeArray() : [];
$.ajax({
url: url,
data: data,
dataType: dataType,
type: method.toUpperCase(),
beforeSend: function (xhr) {
el.trigger('ajax:loading', xhr);
},
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:failure', [xhr, status, error]);
}
});
}
el.trigger('ajax:after');
}
}
});
/**
* confirmation handler
*/
$('a[data-confirm],input[data-confirm]').live('click', function () {
var el = $(this);
if (el.triggerAndReturn('confirm')) {
if (!confirm(el.attr('data-confirm'))) {
return false;
}
}
});
/**
* remote handlers
*/
$('form[data-remote]').live('submit', function (e) {
$(this).callRemote();
e.preventDefault();
});
$('a[data-remote],input[data-remote]').live('click', function (e) {
$(this).callRemote();
e.preventDefault();
});
$('a[data-method]:not([data-remote])').live('click', 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 != null && csrf_token != null) {
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]';
var disable_with_form_remote_selector = 'form[data-remote]:has(' + disable_with_input_selector + ')';
var 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', disable_with_input_function);
$(disable_with_form_not_remote_selector).live('submit', disable_with_input_function);
$(disable_with_form_remote_selector).live('ajax:complete', function () {
$(this).find(disable_with_input_selector).each(function () {
var input = $(this);
input.removeAttr('disabled')
.val(input.data('enable-with'));
});
});
});
Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment