• function

update can.Model.update

 

Update a resource on the server.

can.Model.update: "[METHOD] /path/to/resource"

If you provide a URL, the Model will send a request to that URL using the method specified (or PUT if none is specified) when updating an instance on the server. (See below for more details.)

Returns

{can.Deferred}

A Deferred that resolves to the updated model.

can.Model.update: function(id, serialized) -> can.Deffered

If you provide a function, the Model will expect you to do your own AJAX requests.

Parameters

  1. id {*}

    The ID of the model to update.

  2. serialized {Object}

    The serialized properties of the model to update.

Returns

{can.Deferred}

A Deferred that resolves to the updated model.

update( id, attrs ) -> Deferred is used by save to update a model instance on the server.

Implement with a URL

The easist way to implement update is to just give it the url to PUT data to:

Recipe = can.Model.extend({
  update: "/recipes/{id}"
},{});

This lets you update a recipe like:

Recipe.findOne({id: 1}, function(recipe){
  recipe.attr('name','salad');
  recipe.save();
})

This will make an XHR request like:

PUT /recipes/1 
name=salad

If your server doesn't use PUT, you can change it to post like:

Recipe = can.Model.extend({
  update: "POST /recipes/{id}"
},{});

The server should send back an object with any new attributes the model should have. For example if your server udpates the "updatedAt" property, it should send back something like:

// PUT /recipes/4 {name: "Food"} ->
{
  updatedAt : "10-20-2011"
}

Implement with a Function

You can also implement update by yourself. Update takes the id and attributes of the instance to be udpated. Update must return a Deferred that resolves to an object that contains any properties that should be set on the instance.

For example, the following code makes a request to '/recipes/5.json?name=hot+dog' and gets back something that looks like:

{ 
  updatedAt: "10-20-2011"
}

The code looks like:

Recipe = can.Model.extend({
  update : function(id, attrs ) {
    return $.post("/recipes/"+id+".json",attrs, null,"json");
  }
},{});