custom validation error message from a controller in laravel8 - php

Question

protected function validator(array $data)
{
$validation = Validator::make($data, [
'email' => ['required', 'string', 'email', 'max:255', 'unique:users'],
'password' => ['required', 'string', 'min:8', 'confirmed']
]);
if ($validation->fails())
{
return session()->flash('alert-danger', 'error');
}
}
protected function create(array $data)
{
$company = new Company();
$company->store_name = $data['company_name'];
$company->save();
}
Check the fail status inside the validator function and show the error message

Answer 1

request()->validate([
'email' => 'required'
],
[
'email.required' => 'You have to choose the email!',
]);

Answer 2

try this below code instead of the above validation
request()->validate([
'email' => ['required', 'string', 'email', 'max:255', 'unique:users'],
'password' => ['required', 'string', 'min:8', 'confirmed'],
];
now if you remove the code
if ($validation->fails())
{
return session()->flash('alert-danger', 'error');
}
the code will run without any error .
and if you do not enter any value in the input field
the the request->validate() will check all the request.

Answer 3

You need to actually return something in your if ($validation->fails()) check. Right now, you're setting a session Flash, but returning null (->flash() has no return value).
You have a couple solutions here, but it depends if this is a Form Submission or an AJAX Request:
protected function validator(array $data) {
return Validator::make($data, [
'email' => ['required', 'string', 'email', 'max:255', 'unique:users'],
'password' => ['required', 'string', 'min:8', 'confirmed']
]);
}
protected function create(array $data) {
$validator = $this->validator($data);
if ($validator->fails()) {
session()->flash('alert-danger', 'error');
// If this is an AJAX Request:
if (request()->ajax()) {
return response()->json(['errors' => $validator->errors()], 422);
}
// If this is a Form Submission:
return back()->withErrors($validator->errors());
}
$company = new Company();
$company->store_name = $data['company_name'];
$company->save();
}
Basically, modify your validator method to return the Validator::make() instance, check it in your create() method, and return appropriately based on if this is an AJAX Request or Form Submission.