add error to laravel validation
//setup Validator and passing request data and rules
$validator = \Validator::make(request()->all(), [
'due_date' => 'required',
'template' => 'required'
]);
//hook to add additional rules by calling the ->after method
$validator->after(function ($validator) {
if (request('event') == null) {
//add custom error to the Validator
$validator->errors()->add('event', 'Please select an event');
}
});
//run validation which will redirect on failure
$validator->validate();
//https://dcblog.dev/laravel-adding-custom-validation-errors