How I can add error message in Laravel validate?

Question

Help plz. "How add error user mistake in laravel" I want show JSON file - error $regex - reqular rules I need get mistake on not correct sourceUrl

           $this->validate($request,[
            'title' => 'required|min:10|max:250', //work
            'subTitle' =>'sometimes|present|nullable|min:10|max:250', //work
            'message' => 'required|min:10',//work
            'recommendPic' => 'present|nullable', //work
            'pic' => 'required|sometimes', //file - check upload file,image need fix
            'sourceUrl' =>'required|regex:'.$regex,
       ],[
            'sourceUrl.regex:'.$regex=>'mistake',
       ]);

Answer 1

You need to return your failed validation messages, something like the following:

$validation = Validator::make($request->all(), [
    'title' => 'required|min:10|max:250', //work
    'subTitle' =>'sometimes|present|nullable|min:10|max:250', //work
    'message' => 'required|min:10',//work
    'recommendPic' => 'present|nullable', //work
    'pic' => 'required|sometimes', //file - check upload file,image need fix
    'sourceUrl' =>'required|regex:'.$regex,
]);

// if validation fails
if ($validation->fails()) {
  return response()->json([
    'status' => 'failure',
    'errors' => $validation->errors()
  ], 400);
}

// validation passes
return response()->json(['status' => 'success'], 200);