jQuery ajax request method hack.js

// This is a jQuery monkey-patch that changes all PUT and DELETE requests 
// into POST requests and sets a "_method" param to the original request method.
//
// This is a workaround for the fact that some corporate networks and 
// environments don't allow PUT and DELETE requests.
//
// This whole thing works because Rails implements the _method hack.
(function(){
	var ajaxWithoutMethodHack = jQuery.ajax;
	jQuery.ajax = function( s ) {
		if (s.type == "PUT" || s.type == "DELETE") {
			
			if ( s.data && typeof s.data === "object" ) {
				s.data._method = s.type;
			} else if (s.data && typeof s.data === "string" ) {
				s.data = s.data + '&_method=' + s.type;
			} else {
				s.data = {'_method': s.type};
			}

			s.type = 'POST';
		}

		ajaxWithoutMethodHack(s);
	};
})();