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BookStack/app/Http/Controllers/Controller.php

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<?php
namespace Oxbow\Http\Controllers;
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use HttpRequestException;
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use Illuminate\Foundation\Bus\DispatchesJobs;
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use Illuminate\Http\Exception\HttpResponseException;
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use Illuminate\Routing\Controller as BaseController;
use Illuminate\Foundation\Validation\ValidatesRequests;
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use Illuminate\Support\Facades\Auth;
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use Illuminate\Support\Facades\Session;
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use Oxbow\User;
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abstract class Controller extends BaseController
{
use DispatchesJobs, ValidatesRequests;
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/**
* @var User static
*/
protected $currentUser;
/**
* @var bool
*/
protected $signedIn;
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/**
* Controller constructor.
*/
public function __construct()
{
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// Get a user instance for the current user
$user = auth()->user();
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if (!$user) $user = User::getDefault();
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// Share variables with views
view()->share('signedIn', auth()->check());
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view()->share('currentUser', $user);
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// Share variables with controllers
$this->currentUser = $user;
$this->signedIn = auth()->check();
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}
/**
* Checks for a permission.
*
* @param $permissionName
* @return bool|\Illuminate\Http\RedirectResponse
*/
protected function checkPermission($permissionName)
{
if (!$this->currentUser || !$this->currentUser->can($permissionName)) {
Session::flash('error', trans('errors.permission'));
throw new HttpResponseException(
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redirect('/')
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);
}
return true;
}
protected function checkPermissionOr($permissionName, $callback)
{
$callbackResult = $callback();
if ($callbackResult === false) $this->checkPermission($permissionName);
return true;
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}
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}