give custom field name in laravel form validation error message

1$rules = [
2        'name' => 'required',
3        'email' => 'required|email',
4        'message' => 'required|max:250',
5    ];
6
7    $customMessages = [
8        'required' => 'The :attribute field is required.'
9    ];
10
11    $this->validate($request, $rules, $customMessages);

1$this->validate([
2  'userid' =>'required|min:3|max:100',
3  'username' =>'required|min:3',
4  'password' =>'required|max:15|confirmed',
5], [], [
6  'userid' => 'User ID'
7]);

1$rules = [
2        'name' => 'required',
3        'email' => 'required|email',
4        'message' => 'required|max:250',
5    ];
6
7    $customMessages = [
8        'required' => 'The :attribute field is required.'
9    ];
10
11    $this->validate($request, $rules, $customMessages);
12//@sujay

1$messsages = [
2              'email.required'=>'You cant leave Email field empty',
3              'name.required'=>'You cant leave name field empty',
4              'name.min'=>'The field has to be :min chars long',
5			 ];
6
7	$rules = [
8              'email'=>'required|unique:content',
9              'name'=>'required|min:3',
10			];
11
12$validator = Validator::make($request, $rules,$messsages);