engine/vendor/assets/javascripts/backbone.sync.js

94 lines
2.6 KiB
JavaScript

(function() {
var methodMap = {
'create': 'POST',
'update': 'PUT',
'delete': 'DELETE',
'read' : 'GET'
};
var getUrl = function(object) {
if (!(object && object.url)) return null;
return _.isFunction(object.url) ? object.url() : object.url;
};
var urlError = function() {
throw new Error("A 'url' property or function must be specified");
};
Backbone.sync = function(method, model, options) {
var type = methodMap[method];
// Default JSON-request options.
var params = _.extend({
type: type,
dataType: 'json',
beforeSend: function( xhr ) {
var token = $('meta[name="csrf-token"]').attr('content');
if (token) xhr.setRequestHeader('X-CSRF-Token', token);
}
}, options);
if (!params.url) {
params.url = getUrl(model) || urlError();
}
// Ensure that we have the appropriate request data.
if (!params.data && model && (method == 'create' || method == 'update')) {
params.contentType = 'application/json';
var data = {}
if(model.paramRoot) {
data[model.paramRoot] = model.toJSON();
} else {
data = model.toJSON();
}
if (typeof(FormData) != 'undefined') { // XHR2
var formData = new FormData();
var _buildParams = function(prefix, obj, fn) { // code grabbed from jquery
if (jQuery.isArray(obj)) {
jQuery.each(obj, function(i, v) {
if (/\[\]$/.test(prefix)) { // rbracket
fn(prefix, v);
} else {
_buildParams(prefix + "[" + ( typeof v === "object" || jQuery.isArray(v) ? i : "" ) + "]", v, fn);
}
});
} else if (obj != null && typeof obj === "object" && !(obj instanceof File)) {
for (var name in obj) {
_buildParams(prefix + "[" + name + "]", obj[name], fn);
}
} else {
fn(prefix, obj);
}
}
for (var prefix in data) {
_buildParams(prefix, data[prefix], function(key, value) {
// console.log('append ' + key + ', ' + value);
if (value != null)
formData.append(key, value);
});
}
params.data = formData;
params.processData = false;
params.contentType = false;
} else {
params.data = JSON.stringify(data);
}
}
// Don't process data on a non-GET request.
if (params.type !== 'GET') {
params.processData = false;
}
// Make the request.
return $.ajax(params);
}
}).call(this);