How do I make an AJAX request to a controller method

Dear all,

I have a few issues using AJAX requests to process form data. I would like to use the googlemaps API V3 in Javascript for geocoding purpose.

The workflow should be as follows:

1. User enters StreetName into a form
2. Street Form data is processed by GoogleMaps API JS on client side to reverse geocode to get lat/lng
3. Form has an action to a controller function to process the data.
4. In this function inside the controller the data will be stored to a database.

My problem is now this: The Lat/Lng Informatin by Google Maps API is client-side information whereas the rest of the stuff is processed server side. So I want to inform my server about this additional information as well.

Therefore I thought about using an AJAX request to pass this client-side information to the server. But I get stuck here. I do want to make sure, that before the server-side function in the controller is storing all information, the additional Lat/Lng info is added to the data before and then stored to the database.

Here

This is the JS method:

function reverseGeocodeAddress() {
    $.ajax({
        type: "POST",
        url: 'IncidentController@receiveReverseGeocodeInformation',
        data: "",
        success: function() {
            console.log("Geodata sent");
        }
    })
};

I want to use an AJAX request to send the information to the server. But how do I tell the method to which method in the controller I want to sent to? the method you see there should be the one that processes the info server-side.

Here is the the code I wrote so far:

Controller:

    public function createIncident(PrepareIncidentRequest $request)
    {
        $data = $request->all();
        $data = $data + [
                'incidentReference' => TicketSystem::generateIncidentReference(),
                'incidentID'        => TicketSystem::generateIncidentID(),
                'date'              => Carbon::now()->format('Ymd')
            ];
        $incident = Incident::create($data);
        Auth::user()->incidents()->save($incident);
    }

    public function receiveReverseGeocodeInformation(Request $request) {
        if(Response::ajax()) return "OK";
    }

JavaScript Function with AJAX request

function reverseGeocodeAddress() {
    $.ajax({
        type: "POST",
        url: 'IncidentController@receiveReverseGeocodeInformation',
        data: "",
        success: function() {
            console.log("Geodata sent");
        }
    })
};

I want to use a certain function in the controller to receive the information from the AJAX request. As you can see in the receiveReverseGeoCodeInformation method in the controller, I added some test response. But I don't get it to work. Do I miss something here?