BookStack/app/helpers.php

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<?php
use BookStack\Ownable;
if (!function_exists('versioned_asset')) {
/**
* Get the path to a versioned file.
*
* @param string $file
* @return string
*
* @throws \InvalidArgumentException
*/
function versioned_asset($file)
{
static $manifest = null;
if (is_null($manifest)) {
$manifest = json_decode(file_get_contents(public_path('build/manifest.json')), true);
}
if (isset($manifest[$file])) {
return '/' . $manifest[$file];
}
if (file_exists(public_path($file))) {
return '/' . $file;
}
throw new InvalidArgumentException("File {$file} not defined in asset manifest.");
}
}
/**
* Check if the current user has a permission.
* If an ownable element is passed in the jointPermissions are checked against
* that particular item.
* @param $permission
* @param Ownable $ownable
* @return mixed
*/
function userCan($permission, Ownable $ownable = null)
{
if ($ownable === null) {
return auth()->user() && auth()->user()->can($permission);
}
// Check permission on ownable item
$permissionService = app(\BookStack\Services\PermissionService::class);
return $permissionService->checkOwnableUserAccess($ownable, $permission);
}
/**
* Helper to access system settings.
* @param $key
* @param bool $default
* @return mixed
*/
function setting($key, $default = false)
{
$settingService = app('BookStack\Services\SettingService');
return $settingService->get($key, $default);
}
/**
* Generate a url with multiple parameters for sorting purposes.
* Works out the logic to set the correct sorting direction
* Discards empty parameters and allows overriding.
* @param $path
* @param array $data
* @param array $overrideData
* @return string
*/
function sortUrl($path, $data, $overrideData = [])
{
$queryStringSections = [];
$queryData = array_merge($data, $overrideData);
// Change sorting direction is already sorted on current attribute
if (isset($overrideData['sort']) && $overrideData['sort'] === $data['sort']) {
$queryData['order'] = ($data['order'] === 'asc') ? 'desc' : 'asc';
} else {
$queryData['order'] = 'asc';
}
foreach ($queryData as $name => $value) {
$trimmedVal = trim($value);
if ($trimmedVal === '') continue;
$queryStringSections[] = urlencode($name) . '=' . urlencode($trimmedVal);
}
if (count($queryStringSections) === 0) return $path;
return $path . '?' . implode('&', $queryStringSections);
}