blue-twilight/app/Helpers/PermissionsHelper.php

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<?php
namespace App\Helpers;
use App\Album;
use App\User;
use Illuminate\Support\Facades\DB;
class PermissionsHelper
{
public function rebuildCache()
{
// Get a list of albums
$albums = Album::all();
// Get a list of all configured permissions
$albumUserPermissions = DB::table('album_user_permissions')->get();
$albumGroupPermissions = DB::table('album_group_permissions')->get();
$albumAnonPermissions = DB::table('album_anonymous_permissions')->get();
// Get a list of all user->group memberships
$userGroups = DB::table('user_groups')->get();
// Build a matrix of new permissions
$permissionsCache = [];
/** @var Album $album */
foreach ($albums as $album)
{
$anonymousPermissions = array_filter($albumAnonPermissions->toArray(), function($item) use ($album)
{
return ($item->album_id == $album->id);
});
foreach ($anonymousPermissions as $anonymousPermission)
{
$permissionsCache[] = [
'album_id' => $album->id,
'permission_id' => $anonymousPermission->permission_id,
'created_at' => new \DateTime(),
'updated_at' => new \DateTime()
];
}
$userPermissions = array_filter($albumUserPermissions->toArray(), function($item) use ($album)
{
return ($item->album_id == $album->id);
});
foreach ($userPermissions as $userPermission)
{
$permissionsCache[] = [
'user_id' => $userPermission->user_id,
'album_id' => $album->id,
'permission_id' => $userPermission->permission_id,
'created_at' => new \DateTime(),
'updated_at' => new \DateTime()
];
}
$groupPermissions = array_filter($albumGroupPermissions->toArray(), function($item) use ($album)
{
return ($item->album_id == $album->id);
});
foreach ($groupPermissions as $groupPermission)
{
// Get a list of users in this group, and add one per user
$usersInGroup = array_filter($userGroups->toArray(), function($item) use ($groupPermission)
{
return $item->group_id = $groupPermission->group_id;
});
foreach ($usersInGroup as $userGroup)
{
$permissionsCache[] = [
'user_id' => $userGroup->user_id,
'album_id' => $album->id,
'permission_id' => $groupPermission->permission_id,
'created_at' => new \DateTime(),
'updated_at' => new \DateTime()
];
}
}
}
$this->savePermissionsCache($permissionsCache);
}
private function savePermissionsCache(array $cacheToSave)
{
DB::transaction(function() use ($cacheToSave)
{
DB::table('album_permissions_cache')->truncate();
foreach ($cacheToSave as $cacheItem)
{
DB::table('album_permissions_cache')->insert($cacheItem);
}
});
}
}