/
ValidatesRequests.php
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/
ValidatesRequests.php
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<?php
namespace Illuminate\Foundation\Validation;
use Illuminate\Http\Request;
use Illuminate\Http\JsonResponse;
use Illuminate\Routing\UrlGenerator;
use Illuminate\Contracts\Validation\Factory;
use Illuminate\Contracts\Validation\Validator;
use Illuminate\Validation\ValidationException;
trait ValidatesRequests
{
/**
* The default error bag.
*
* @var string
*/
protected $validatesRequestErrorBag;
/**
* Run the validation routine against the given validator.
*
* @param \Illuminate\Contracts\Validation\Validator|array $validator
* @param \Illuminate\Http\Request|null $request
* @return void
*/
public function validateWith($validator, Request $request = null)
{
$request = $request ?: app('request');
if (is_array($validator)) {
$validator = $this->getValidationFactory()->make($request->all(), $validator);
}
if ($validator->fails()) {
$this->throwValidationException($request, $validator);
}
}
/**
* Validate the given request with the given rules.
*
* @param \Illuminate\Http\Request $request
* @param array $rules
* @param array $messages
* @param array $customAttributes
* @return void
*/
public function validate(Request $request, array $rules, array $messages = [], array $customAttributes = [])
{
$validator = $this->getValidationFactory()->make($request->all(), $rules, $messages, $customAttributes);
if ($validator->fails()) {
$this->throwValidationException($request, $validator);
}
}
/**
* Validate the given request with the given rules.
*
* @param string $errorBag
* @param \Illuminate\Http\Request $request
* @param array $rules
* @param array $messages
* @param array $customAttributes
* @return void
*
* @throws \Illuminate\Validation\ValidationException
*/
public function validateWithBag($errorBag, Request $request, array $rules, array $messages = [], array $customAttributes = [])
{
$this->withErrorBag($errorBag, function () use ($request, $rules, $messages, $customAttributes) {
$this->validate($request, $rules, $messages, $customAttributes);
});
}
/**
* Execute a Closure within with a given error bag set as the default bag.
*
* @param string $errorBag
* @param callable $callback
* @return void
*/
protected function withErrorBag($errorBag, callable $callback)
{
$this->validatesRequestErrorBag = $errorBag;
call_user_func($callback);
$this->validatesRequestErrorBag = null;
}
/**
* Throw the failed validation exception.
*
* @param \Illuminate\Http\Request $request
* @param \Illuminate\Contracts\Validation\Validator $validator
* @return void
*
* @throws \Illuminate\Validation\ValidationException
*/
protected function throwValidationException(Request $request, $validator)
{
throw new ValidationException($validator, $this->buildFailedValidationResponse(
$request, $this->formatValidationErrors($validator)
));
}
/**
* Create the response for when a request fails validation.
*
* @param \Illuminate\Http\Request $request
* @param array $errors
* @return \Symfony\Component\HttpFoundation\Response
*/
protected function buildFailedValidationResponse(Request $request, array $errors)
{
if ($request->expectsJson()) {
return new JsonResponse($errors, 422);
}
return redirect()->to($this->getRedirectUrl())
->withInput($request->input())
->withErrors($errors, $this->errorBag());
}
/**
* Format the validation errors to be returned.
*
* @param \Illuminate\Contracts\Validation\Validator $validator
* @return array
*/
protected function formatValidationErrors(Validator $validator)
{
return $validator->errors()->getMessages();
}
/**
* Get the key to be used for the view error bag.
*
* @return string
*/
protected function errorBag()
{
return $this->validatesRequestErrorBag ?: 'default';
}
/**
* Get the URL we should redirect to.
*
* @return string
*/
protected function getRedirectUrl()
{
return app(UrlGenerator::class)->previous();
}
/**
* Get a validation factory instance.
*
* @return \Illuminate\Contracts\Validation\Factory
*/
protected function getValidationFactory()
{
return app(Factory::class);
}
}