Laravel 5.3 return custom error message using $this->validate()

Question

How to return a custom error message using this format?

$this->validate($request, [
  \'thing\' => \'required\'
]);

Answer 1

For Multiple Field, Role and Field-Role Specific Message

$this->validate(
        $request, 
        [   
            'uEmail'             => 'required|unique:members',
            'uPassword'          => 'required|min:8'
        ],
        [   
            'uEmail.required'    => 'Please Provide Your Email Address For Better Communication, Thank You.',
            'uEmail.unique'      => 'Sorry, This Email Address Is Already Used By Another User. Please Try With Different One, Thank You.',
            'uPassword.required' => 'Password Is Required For Your Information Safety, Thank You.',
            'uPassword.min'      => 'Password Length Should Be More Than 8 Character Or Digit Or Mix, Thank You.',
        ]
    );