Transforming the AngularJS $http GET method to OPTION and including custom headers

var users= $resource('http://myapp.herokuapp.com/users', {});
users.get();

The change in the HTTP GET method to OPTION occurred after implementing a header method.

var users= $resource('http://myapp.herokuapp.com/users', {}, {
    get:{
        method:"GET",
        headers:{'x-access-token':'token'}
    }
});

users.get();

I would appreciate some guidance on why the GET method was replaced with the OPTION method.

Answer №1

Adhering to REST conventions, an OPTIONS request is made prior to the GET request.

In accordance with the specification:

This technique enables the client to ascertain the available choices and/or specifications linked to a resource, or the functionalities of a server, without suggesting a resource action or triggering a resource retrieval.

Answer №2

Pre-flight procedures that may lead to misunderstandings --> One of the pre-flight checks performed by the XHR object is to verify if it has permission to carry out the request

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