L4 Validation examples (basic , how to define custom Validation rules )

Validation.php

<?php
 
/* Signature of a Validation  */
$validator = Validator::make($data , $rules  , $customMessage) ; 
	/* Validating submitted fields */
		$inputs = Input::all();
		$rules = array(
			'name' => 'Required|max:100',
			'email'  => 'Required|email|max:100',
			'msg' => 'Required|max:500'
		);
$validator = Validator::make($inputs, $rules);
 
 
//
 
/* Rules as "|" separator */
$validator = Validator::make( ['name' => 'Dayle' ] , ['name' => 'required|min:5' ]) ;
 
/* Rules as array  */
$validator = Validator::make( ['name' => 'Dayle'] , ['name' => ['required', 'min:5']]) ;
if ($validator->fails()) { /* do stuff here */ }
 
 
 
/* Passing cusotm message to the Validator  */
$messages = array('required' => 'The :attribute field is required.', );
/* Passing cusotm messages to the Validator  */
$messages = array(
    'same'    => 'The :attribute and :other must match.',
    'size'    => 'The :attribute must be exactly :size.',
    'between' => 'The :attribute must be between :min - :max.',
    'in'      => 'The :attribute must be one of the following types: :values',
);
/*  Specifying A Custom Message For A Given Attribute  */
$messages = array('email.required' => 'We need to know your e-mail address!',);
$validator = Validator::make($input, $rules, $messages);
 
 
/* Registering A Custom Validation Rule as a Closure */
Validator::extend('foo', function($attribute, $value, $parameters)
{
    return $value == 'foo';
}) ;
 
/* Registering A Custom Validation Rule as a Class-Method */
Validator::extend('foo', 'FooValidator@validate');
 
 
/*  Extending The Validator Class  */
class CustomValidator extends Illuminate\Validation\Validator {
 
    public function validateFoo($attribute, $value, $parameters)
    {
        return $value == 'foo';
    }
 
}
 
Validator::resolver(function($translator, $data, $rules, $messages)
{
    return new CustomValidator($translator, $data, $rules, $messages);
});
 
 
 
#####################################################################
##########  	Practical example                      ##############
##  Registering a Custom rule into a Closure      		##############
#####################################################################

1) Into the routes.php or app/start/global.php file 
Validator::extend('divisible_by_two', function($attribute, $value, $parameters)
{
            return ($value % 2) === 0;
});
 
2) // Routes.php file
    Route::get('divide/{number}', function($number)
    {
        $input      = ['number' => $number];
        $rule       = ['number' => 'divisible_by_two'];
        $messages   = ['divisible_by_two' => 'The :attribute must be divisible by two.'];
 
        $validator = Validator::make($input, $rule, $messages);
 
        if ($validator->fails()) {
            return $validator->messages()->first('number');
        }
 
        return $number . ' is divisible by two.';
    });

 
 
#####################################################################
##########  	Practical example                      ##############
##  Registering a Custom rule into a Custom Class      ##############
#####################################################################
 

1)  Register a custom Library folder (app/lib)
2)  Create a class into app/lib/tournasdim/validator/Divisible.php
<?php    namespace Tournasdim\Validator;
 
    class Divisible
    {
        public function divisibleByTwo($attribute, $value, $parameters)
        {
            return ($value % 2) === 0;
        }
    }
    
 3)  Run a "composer dump-autoload"
 4)  Into the app/start/global.php file register the Validator
        Validator::extend('divisible_by_two', '\Tournasdim\Validator\Divisible@divisibleByTwo');
 5) // Routes.php file 
     Route::get('divide/{number}', function($number)
    {
 
        $input      = ['number' => $number];
        $rule       = ['number' => 'divisible_by_two'];
        $messages   = ['divisible_by_two' => 'The :attribute must be divisible by two.'];
 
        $validator = Validator::make($input, $rule, $messages);
 
        if ($validator->fails()) {
            return $validator->messages()->first('number');
        }
 
        return $number . ' is divisible by two.';
    });
 
 
 
#####################################################################
##########  	Practical example                     ###############
##  Registering a Custom rule by extending the Validator Class  #####
#####################################################################

1)  Register a custom Library folder (app/lib)
2)  Create a class into app/lib/tournasdim/validator/Divisible.php
 
<?php    namespace Tournasdim\Validator ;
    class Divisible extends \Illuminate\Validation\Validator 
    {
        public function validateDivisibleByTwo($attribute, $value, $parameters)
        {
            return ($value % 2) === 0;
        }
    }
    
 3)  Run a "composer dump-autoload"
 4)  Into the app/start/global.php file register the Validator
    Validator::resolver(function($translator, $data, $rules, $messages)
    {
        return new \Tournasdim\Validator\Divisible($translator, $data, $rules, $messages);
    });
 5) // Routes.php file 
     Route::get('divide/{number}', function($number)
    {
 
        $input      = ['number' => $number];
        $rule       = ['number' => 'divisible_by_two'];
        $messages   = ['divisible_by_two' => 'The :attribute must be divisible by two.'];
 
        $validator = Validator::make($input, $rule, $messages);
 
        if ($validator->fails()) {
            return $validator->messages()->first('number');
        }
 
        return $number . ' is divisible by two.';
    });