Continued with database work for permissions overhaul

Added to the entity_permissions table with further required fields and indexes.
Wrote the code for checking permissions.

+<?php
+
+namespace BookStack\Console\Commands;
+
+use BookStack\Services\RestrictionService;
+use Illuminate\Console\Command;
+
+class RegeneratePermissions extends Command
+{
+    /**
+     * The name and signature of the console command.
+     *
+     * @var string
+     */
+    protected $signature = 'permissions:regen';
+
+    /**
+     * The console command description.
+     *
+     * @var string
+     */
+    protected $description = 'Regenerate all system permissions';
+
+    /**
+     * The service to handle the permission system.
+     *
+     * @var RestrictionService
+     */
+    protected $restrictionService;
+
+    /**
+     * Create a new command instance.
+     *
+     * @param RestrictionService $restrictionService
+     */
+    public function __construct(RestrictionService $restrictionService)
+    {
+        $this->restrictionService = $restrictionService;
+        parent::__construct();
+    }
+
+    /**
+     * Execute the console command.
+     *
+     * @return mixed
+     */
+    public function handle()
+    {
+        $this->restrictionService->buildEntityPermissions();
+    }
+}

@@ -15,6 +15,7 @@ class Kernel extends ConsoleKernel
     protected $commands = [
         \BookStack\Console\Commands\Inspire::class,
         \BookStack\Console\Commands\ResetViews::class,
+        \BookStack\Console\Commands\RegeneratePermissions::class,
     ];
 
     /**

@@ -74,6 +74,15 @@ abstract class Entity extends Ownable
     }
 
     /**
+     * Get the entity permissions this is connected to.
+     * @return \Illuminate\Database\Eloquent\Relations\MorphMany
+     */
+    public function permissions()
+    {
+        return $this->morphMany(EntityPermission::class, 'entity');
+    }
+
+    /**
      * Allows checking of the exact class, Used to check entity type.
      * Cleaner method for is_a.
      * @param $type
@@ -81,7 +90,16 @@ abstract class Entity extends Ownable
      */
     public static function isA($type)
     {
-        return static::getClassName() === strtolower($type);
+        return static::getType() === strtolower($type);
+    }
+
+    /**
+     * Get entity type.
+     * @return mixed
+     */
+    public static function getType()
+    {
+        return strtolower(static::getClassName());
     }
 
     /**

@@ -19,7 +19,16 @@ class CreateEntityPermissionsTable extends Migration
             $table->integer('entity_id');
             $table->string('action');
             $table->boolean('has_permission')->default(false);
+            $table->boolean('has_permission_own')->default(false);
+            $table->integer('created_by');
+            $table->index(['entity_id', 'entity_type']);
+            $table->index('role_id');
+            $table->index('action');
+            $table->index('created_by');
         });
+
+        $restrictionService = app(\BookStack\Services\RestrictionService::class);
+        $restrictionService->buildEntityPermissions();
     }
 
     /**

@@ -33,6 +33,7 @@
                     <tr>
                         <th></th>
                         <th>Create</th>
+                        <th>View</th>
                         <th>Edit</th>
                         <th>Delete</th>
                     </tr>