How to fix 422 Ajax and Laravel error?

Question

Laravel

Hello.
I get this error 422 (Unprocessable Entity), I googled it seems like the error is related to data validation, but I messed up somewhere.

<script type="text/javascript">
        $.ajaxSetup({
            headers: {
                'X-CSRF-TOKEN': $('meta[name="csrf-token"]').attr('content')
            }
        });

        $( "#form" ).submit(function( e ) {
            e.preventDefault();

            var message = $('#message').val();
            var img = $('#img').val();
            var user_id = $('#user_id').val();
            var _token = $('input[name="_token"]').val();

            $.ajax({
                type: "POST",
                url: "{{route('profile.store', ['id' => Auth::user()->id])}}",
                data: {message:message, img:img, user_id:user_id, _token:_token},
                success: function (data) {
                    $("#textpost").html($(data).find("#textpost").html());
                },
            });
        });

    </script>

The method itself

public function store(Request $request) {
        $validator  = $this->validate($request,[
            'message' => 'required|max:1000',
            'img' => 'mimes:jpeg,png,gif|max:3000',
        ]);

        if($validator ) {
            $post = new Profile();
            $post->message = $request->message;
            $post->user_id = Auth::user()->id;

            if($request->file('img')) {
                $path = Storage::putFile('public', $request->file('img'));
                $url = Storage::url($path);
                $post->img = $url;
            }

            $post->save();
        }

        return redirect()->back();
    }

Answer 1

The data you submit is not validated:

[
    'message' => 'required|max:1000',
    'img' => 'mimes:jpeg,png,gif|max:3000',
]

Since we don't know the details, we can't help you any further. Understand what each of these rules does, what you are sending and understand what the problem is. In the response, you should receive a description of the errors, indicating the fields and specific rules.