$http put v create - what is the difference between the data object returned from .success() in each (JavaScript)

Question

Is there a fundamental difference between " data " variable returned from .success() in $http.create v $http.put ?

I've added " console.log(data) " to 2 different functions below (and included the Rails controllers for reference) so we can see the difference in output.

Create

i.create = function(item) {
    return $http.post('/items.json', item).success(function(data) {
        console.log(data);
    });
};

def create
    respond_with Item.create(item_params)
end

Put

i.edit = function(id, item) {
    return $http.put('/items/' + id + '.json', {item: item}).success(function(data) {
        console.log(data);
    });
};

def update
    item = Item.find(params[:id])
    item.update_attributes(item_params)
    respond_with item
end

The first function prints below to console, ( which includes the object )

app.self-58d6f492fc5c0efae12da42ede8f7ad0257b7e5ce84e944443b2beecbb803e20.js?body=1:165
<br>
 Object {id: 22, desc: "testabc", list_id: null, created_at:
"2016-03-10T02:47:05.194Z", updated_at: "2016-03-10T02:47:05.194Z"…}

The second function prints below to console, ( no object )

app.self-58d6f492fc5c0efae12da42ede8f7ad0257b7e5ce84e944443b2beecbb803e20.js?body=1:186

Both functions work and do their job. But "data" returned from the PUT does not contain the object.

Why does it happen this way?

Answer 1

there's no fundamental difference between the two, the only thing that makes them difference is the data response from the server. The update controller of your server might not responding json object.