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<?php |
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namespace Backpack\CRUD\app\Http\Controllers\Operations; |
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use Illuminate\Support\Facades\Route; |
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use Illuminate\Support\Str; |
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trait FetchOperation |
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{ |
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/** |
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* Define which routes are needed for this operation. |
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* |
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* @param string $segment Name of the current entity (singular). Used as first URL segment. |
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* @param string $routeName Prefix of the route name. |
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* @param string $controller Name of the current CrudController. |
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*/ |
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protected function setupFetchOperationRoutes($segment, $routeName, $controller) |
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{ |
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// get all method names on the current model that start with "fetch" (ex: fetchCategory) |
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// if a method that looks like that is present, it means we need to add the routes that fetch that entity |
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preg_match_all('/(?<=^|;)fetch([^;]+?)(;|$)/', implode(';', get_class_methods($this)), $matches); |
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if (count($matches[1])) { |
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foreach ($matches[1] as $methodName) { |
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Route::post($segment.'/fetch/'.Str::kebab($methodName), [ |
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'uses' => $controller.'@fetch'.$methodName, |
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'operation' => 'FetchOperation', |
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]); |
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} |
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} |
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} |
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/** |
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* Gets items from database and returns to selects. |
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* |
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* @param string|array $arg |
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* @return void |
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*/ |
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private function fetch($arg) |
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{ |
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// get the actual words that were used to search for an item (the search term / search string) |
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$searchString = request()->input('q') ?? false; |
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// if the Class was passed as the sole argument, use that as the configured Model |
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// otherwise assume the arguments are actually the configuration array |
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$config = []; |
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if (! is_array($arg)) { |
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if (! class_exists($arg)) { |
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return response()->json(['error' => 'Class: '.$arg.' does not exists'], 500); |
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} |
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$config['model'] = $arg; |
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} else { |
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$config = $arg; |
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} |
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// set configuration defaults |
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$config['itemsPerPage'] = $config['itemsPerPage'] ?? 10; |
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$config['searchableAttributes'] = $config['searchableAttributes'] ?? [$config['model']::getIdentifiableName()]; |
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$config['query'] = isset($config['query']) && is_callable($config['query']) ? $config['query']($config['model']) : new $config['model']; // if a closure that has been passed as "query", use the closure - otherwise use the model |
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// FetchOperation sends an empty query to retrieve the default entry for select when field is not nullable. |
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if ($searchString === false) { |
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return $config['query']->first(); |
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} |
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// for each searchable attribute, add a WHERE clause |
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foreach ($config['searchableAttributes'] as $k => $searchColumn) { |
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$operation = ($k == 0) ? 'where' : 'orWhere'; |
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$columnType = $config['query']->getColumnType($searchColumn); |
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if ($columnType == 'string') { |
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$config['query'] = $config['query']->{$operation}($searchColumn, 'LIKE', '%'.$searchString.'%'); |
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} else { |
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$config['query'] = $config['query']->{$operation}($searchColumn, $searchString); |
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} |
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} |
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// return the paginated results |
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return $config['query']->paginate($config['itemsPerPage']); |
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} |
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} |
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Laravel-Backpack /
CRUD
It seems like the method you are trying to call exists only in some of the possible types.
Let’s take a look at an example:
Available Fixes
Add an additional type-check:
Only allow a single type to be passed if the variable comes from a parameter: