Tips for ignoring preflight response in AngularJS

When I send a http.post request to my service, I start by sending an Option request as required by Cors.

However, I've noticed that the OPTIONS (pre-flight) request does not return any response.data, whereas the POST request does. This creates an issue because I need to access the response.data from the POST response...

Is there a way in Angular to disregard the OPTIONS response during a http.post call?

$http.post("http://api.worksiteclouddev.com/RestfulAPI/api/vw_PeopleListSiteAccess_Update/Get/", JSON.stringify(vm.content))
    .then(function (response) {
        //success

        vm.person = {
            "firstname": response.data.Firstname,
            "surname": response.data.surname
        }; 
        console.log(response.data);
    },
    function (error) {
        //failure
        console.log("Something went wrong..." + error.status);
    })
    .finally(function () {
        vm.ptsnumber = "";
    });

Chrome responses: https://i.sstatic.net/g8R0P.png

Answer №1

It is not possible to ignore the preflight OPTIONS request.

The purpose of this initial request is to obtain permission from the server in order to proceed with the actual request. Your preflight response must acknowledge these headers for the actual request to be successful.

These requests are essential when making cross-origin requests.

Browsers send out this pre-flight request as a precautionary measure to ensure that the server trusts the incoming request. This means that the server validates that the method, origin, and headers in the request are safe to execute.

In your situation, you should expect to receive the response in the post API response section below

$http.post(
 "http://api.worksiteclouddev.com/RestfulAPI/api/vw_PeopleListSiteAccess_Update/Get/", JSON.stringify(vm.content)
).then(function (response) {
  console.log(response.data);
  //You will find the response here
},
function (error) {
  console.log("An error occurred..." + error.status);
});

//You can also create an external service and call the API within that service
//Then, in your controller, you can invoke that method

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