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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 $arg |
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* @return \Illuminate\Http\JsonResponse|Illuminate\Database\Eloquent\Collection|Illuminate\Pagination\LengthAwarePaginator |
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*/ |
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private function fetch($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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$search_string = request()->input('q') ?? false; |
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// if the Class was passed as the sole argument, use that as the configured Model |
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// otherwise assume the arguments are actually the configuration array |
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$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 = $arg; |
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} |
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$model_instance = new $config['model']; |
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// set configuration defaults |
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$config['paginate'] = isset($config['paginate']) ? $config['paginate'] : 10; |
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$config['searchable_attributes'] = $config['searchable_attributes'] ?? $model_instance->identifiableAttribute(); |
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$config['query'] = isset($config['query']) && is_callable($config['query']) ? $config['query']($model_instance) : $model_instance; // if a closure that has been passed as "query", use the closure - otherwise use the model |
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// FetchOperation is aware of an optional parameter 'keys' that will fetch you the entity/entities that match the provided keys |
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if (request()->has('keys')) { |
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$array_keys = request()->get('keys'); |
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if (is_array($array_keys)) { |
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return $model_instance->whereIn($model_instance->getKeyName(), $array_keys)->get(); |
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} else { |
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return $model_instance->where($model_instance->getKeyName(), $array_keys)->get(); |
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} |
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} |
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// FetchOperation sends an empty query to retrieve the default entry for select when field is not nullable. |
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// Also sends an empty query in case we want to load all entities to emulate non-ajax fields |
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// when using InlineCreate. |
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if ($search_string === false) { |
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return ($config['paginate'] !== false) ? |
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$config['query']->paginate($config['paginate']) : |
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$config['query']->get(); |
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} |
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$textColumnTypes = ['string', 'json_string', 'text', 'longText', 'json_array']; |
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// if the query builder brings any where clause already defined by the user we must |
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// ensure that the where prevails and we should only use our search as a complement to the query constraints. |
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// e.g user want only the active products, so in fetch he would return something like: |
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// .... 'query' => function($model) { return $model->where('active', 1); } |
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// So it reads: SELECT ... WHERE active = 1 AND (XXX = x OR YYY = y) and not SELECT ... WHERE active = 1 AND XXX = x OR YYY = y; |
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if (! empty($config['query']->getQuery()->wheres)) { |
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$config['query'] = $config['query']->where(function ($query) use ($model_instance, $config, $search_string, $textColumnTypes) { |
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foreach ((array) $config['searchable_attributes'] as $k => $searchColumn) { |
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$operation = ($k == 0) ? 'where' : 'orWhere'; |
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$columnType = $model_instance->getColumnType($searchColumn); |
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if (in_array($columnType, $textColumnTypes)) { |
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$tempQuery = $query->{$operation}($searchColumn, 'LIKE', '%'.$search_string.'%'); |
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} else { |
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$tempQuery = $query->{$operation}($searchColumn, $search_string); |
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} |
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} |
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return $tempQuery; |
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}); |
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} else { |
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foreach ((array) $config['searchable_attributes'] as $k => $searchColumn) { |
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$operation = ($k == 0) ? 'where' : 'orWhere'; |
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$columnType = $model_instance->getColumnType($searchColumn); |
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if (in_array($columnType, $textColumnTypes)) { |
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$config['query'] = $config['query']->{$operation}($searchColumn, 'LIKE', '%'.$search_string.'%'); |
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} else { |
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$config['query'] = $config['query']->{$operation}($searchColumn, $search_string); |
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} |
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} |
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} |
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// return the results with or without pagination |
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return ($config['paginate'] !== false) ? |
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$config['query']->paginate($config['paginate']) : |
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$config['query']->get(); |
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} |
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} |
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Laravel-Backpack /
CRUD
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