How to write custom validation rule in controller Laravel? - laravel

Question

I have default validation rule in controller Laravel:
$validator = Validator::make($request->all(), [
'email' => 'required|email',
'phone' => 'required|numeric',
'code' => 'required|string|min:3|max:4',
'timezone' => 'required|numeric',
'country' => 'required|integer',
'agreement' => 'accepted'
]);
I tried this, but dont know how to transfer some parameters inside function:
public function boot()
{
Validator::extend('phone_unique', function($attribute, $value, $parameters) {
return substr($value, 0, 3) == '+44';
});
}
How can I extent this validation by my own rule? For example I need to validate concatination of inputs:
$phone = $request->code.' '.$request->phone
After check if $phone are exists in database
I want to use this method:
> $validator->sometimes('phone', 'required|alpha_dash|max:25', function
> ($input) {
> if ((Auth::user()->phone == $input->phone)) {
> return false;
>
> } else {
>
> $t = User::where("phone", $input->phone)->get();
> return ($t->count() > 0) ? false : false;
>
> }
> });
It does not work under all conditions (True, False) inside.
I added new validation nickname_unique:
$validator = Validator::make($request->all(), [
'email' => 'required|email',
'code' => 'required|string|min:3|max:4',
'phone' => 'required|phone_unique',
'timezone' => 'required|numeric',
'country' => 'required|integer',
'nickname' => 'required|alpha_dash|max:25',
'agreement' => 'accepted'
], [
'phone_unique' => 'Phone already exists!',
'nickname_unique' => 'Nickname is busy!',
]);
It does not work, even not call validation rule below previos:
Validator::extend('nickname_unique', function ($attribute, $value, $parameters, $validator) {
dd("Here");
});

Answer 1

You can define your custom validator inside AppServiceProvider like this:
<?php
namespace App\Providers;
use Illuminate\Support\ServiceProvider;
use Illuminate\Support\Facades\Validator;
class AppServiceProvider extends ServiceProvider
{
/**
* Bootstrap any application services.
*
* #return void
*/
public function boot()
{
Validator::extend('phone_unique', function ($attribute, $value, $parameters, $validator) {
$inputs = $validator->getData();
$code = $inputs['code'];
$phone = $inputs['phone'];
$concatenated_number = $code . ' ' . $phone;
$except_id = (!empty($parameters)) ? head($parameters) : null;
$query = User::where('phone', $concatenated_number);
if(!empty($except_id)) {
$query->where('id', '<>', $except);
}
return $query->exists();
});
/**
* Register the service provider.
*
* #return void
*/
public function register()
{
//
}
}
You can get all the inputs passed to the validator, by accessing $validator property - getData()
You can just add an extra parameter to your rules array after your custom validation rule (just after the colon) like this:
'phone' => 'required|phone_unique:1',
Pass the id to be ignored while checking entries into the db
The custom validator Closure receives four arguments: the name of the $attribute being validated, the $value of the attribute, an array of $parameters passed to the rule, and the Validator instance.
Now you can call the validator like this:
$validator = Validator::make($request->all(), [
'email' => 'required|email',
'code' => 'required|string|min:3|max:4',
'phone' => 'required|phone_unique:1',
'timezone' => 'required|numeric',
'country' => 'required|integer',
'agreement' => 'accepted'
], [
'phone_unique' => 'Phone already exists!', // <---- pass a message for your custom validator
]);
See more about Custom Validation Rules.

Answer 2

I am writing this answer because I believe bunch of people are looking for some good answer for this topic. So I decided to share my code that I am using for booking site, where I want to check that IS NOT arrival_date > departure_date.
My version of Laravel is 5.3.30
public function postSolitudeStepTwo(Request $request)
{
$rules = [
'arrival_date' => 'required|date',
'departure_date' => 'required|departure_date_check',
'occasional_accompaniment_requested' => 'required|integer',
'accommodation' => 'required|integer',
'are_you_visiting_director' => 'required|integer',
];
if ($request->input('are_you_visiting_director') == 1) {
$rules['time_in_lieu'] = 'required|integer';
}
$messages = [
'departure_date_check' => 'Departure date can\'t be smaller then Arrival date.Please check your dates.'
];
$validation = validator(
$request->toArray(),
$rules,
$messages
);
//If validation fail send back the Input with errors
if($validation->fails()) {
//withInput keep the users info
return redirect()->back()->withInput()->withErrors($validation->messages());
} else {
MySession::setSessionData('arrival_date', $request);
MySession::setSessionData('departure_date', $request);
MySession::setSessionData('occasional_accompaniment_requested', $request);
MySession::setSessionData('accommodation', $request);
MySession::setSessionData('are_you_visiting_director', $request);
MySession::setSessionData('time_in_lieu', $request);
MySession::setSessionData('comment_solitude_step2_1', $request);
//return $request->session()->all();
return redirect("/getSolitudeStepThree");
}
}
My controller is StepController and there I have declared a method as you can see called postSolitudeStepTwo. I declare the rules and on departure date notice that for the rule we have required|departure_date_check. That will be the name of the method in
app/Providers/AppServiceProvider.php
The code there looks like this:
public function boot()
{
Validator::extend('departure_date_check', function ($attribute, $value, $parameters, $validator) {
$inputs = $validator->getData();
$arrivalDate = $inputs['arrival_date'];
$departureDate = $inputs['departure_date'];
$result = true;
if ($arrivalDate > $departureDate) {
$result = false;
}
return $result;
});
}
As the Laravel documentation 5.3 Custom validation rules we need to extend the Validator facade, the signature of that method has to be:
Validator::extend(name_of_the_function, function ($attribute, $value, $parameters, $validator) {
And I believe the rest is clear.
Hope it will help somebody.

Answer 3

$messsages = array(
'email.required'=>'Email is Required',
'phone.required'=>'Phone number is Required',
);
$rules = array(
'email' => 'required',
'phone' => 'required',
);
$validator = Validator::make(Input::all(), $rules,$messsages);
if ($validator->fails()):
$this->throwValidationException($request, $validator);
endif;