philiplb /
CRUDlex
Complex classes like ControllerProvider often do a lot of different things. To break such a class down, we need to identify a cohesive component within that class. A common approach to find such a component is to look for fields/methods that share the same prefixes, or suffixes. You can also have a look at the cohesion graph to spot any un-connected, or weakly-connected components.
Once you have determined the fields that belong together, you can apply the Extract Class refactoring. If the component makes sense as a sub-class, Extract Subclass is also a candidate, and is often faster.
While breaking up the class, it is a good idea to analyze how other classes use ControllerProvider, and based on these observations, apply Extract Interface, too.
| 1 | <?php |
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| 41 | class ControllerProvider implements ControllerProviderInterface { |
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| 42 | |||
| 43 | /** |
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| 44 | * Generates the not found page. |
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| 45 | * |
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| 46 | * @param Application $app |
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| 47 | * the Silex application |
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| 48 | * @param string $error |
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| 49 | * the cause of the not found error |
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| 50 | * |
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| 51 | * @return Response |
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| 52 | * the rendered not found page with the status code 404 |
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| 53 | */ |
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| 54 | protected function getNotFoundPage(Application $app, $error) { |
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| 61 | |||
| 62 | /** |
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| 63 | * Postprocesses the entity after modification by handling the uploaded |
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| 64 | * files and setting the flash. |
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| 65 | * |
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| 66 | * @param Application $app |
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| 67 | * the current application |
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| 68 | * @param AbstractData $crudData |
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| 69 | * the data instance of the entity |
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| 70 | * @param Entity $instance |
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| 71 | * the entity |
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| 72 | * @param string $entity |
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| 73 | * the name of the entity |
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| 74 | * @param string $mode |
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| 75 | * whether to 'edit' or to 'create' the entity |
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| 76 | * |
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| 77 | * @return null|\Symfony\Component\HttpFoundation\RedirectResponse |
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| 78 | * the HTTP response of this modification |
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| 79 | */ |
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| 80 | protected function modifyFilesAndSetFlashBag(Application $app, AbstractData $crudData, Entity $instance, $entity, $mode) { |
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| 81 | $id = $instance->get('id'); |
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| 82 | $request = $app['request_stack']->getCurrentRequest(); |
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| 83 | $result = $mode == 'edit' ? $crudData->updateFiles($request, $instance, $entity) : $crudData->createFiles($request, $instance, $entity); |
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| 84 | if (!$result) { |
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| 85 | return null; |
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| 86 | } |
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| 87 | $app['session']->getFlashBag()->add('success', $app['translator']->trans('crudlex.'.$mode.'.success', [ |
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| 88 | '%label%' => $crudData->getDefinition()->getLabel(), |
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| 89 | '%id%' => $id |
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| 90 | ])); |
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| 91 | return $app->redirect($app['url_generator']->generate('crudShow', ['entity' => $entity, 'id' => $id])); |
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| 92 | } |
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| 93 | |||
| 94 | /** |
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| 95 | * Sets the flashes of a failed entity modification. |
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| 96 | * |
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| 97 | * @param Application $app |
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| 98 | * the current application |
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| 99 | * @param boolean $optimisticLocking |
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| 100 | * whether the optimistic locking failed |
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| 101 | * @param string $mode |
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| 102 | * the modification mode, either 'create' or 'edit' |
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| 103 | */ |
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| 104 | protected function setValidationFailedFlashes(Application $app, $optimisticLocking, $mode) { |
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| 110 | |||
| 111 | /** |
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| 112 | * Validates and saves the new or updated entity and returns the appropriate HTTP |
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| 113 | * response. |
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| 114 | * |
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| 115 | * @param Application $app |
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| 116 | * the current application |
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| 117 | * @param AbstractData $crudData |
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| 118 | * the data instance of the entity |
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| 119 | * @param Entity $instance |
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| 120 | * the entity |
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| 121 | * @param string $entity |
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| 122 | * the name of the entity |
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| 123 | * @param boolean $edit |
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| 124 | * whether to edit (true) or to create (false) the entity |
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| 125 | * |
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| 126 | * @return Response |
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| 127 | * the HTTP response of this modification |
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| 128 | */ |
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| 129 | protected function modifyEntity(Application $app, AbstractData $crudData, Entity $instance, $entity, $edit) { |
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| 161 | |||
| 162 | /** |
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| 163 | * Gets the parameters for the redirection after deleting an entity. |
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| 164 | * |
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| 165 | * @param Request $request |
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| 166 | * the current request |
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| 167 | * @param string $entity |
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| 168 | * the entity name |
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| 169 | * @param string $redirectPage |
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| 170 | * reference, where the page to redirect to will be stored |
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| 171 | * |
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| 172 | * @return array<string,string> |
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| 173 | * the parameters of the redirection, entity and id |
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| 174 | */ |
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| 175 | protected function getAfterDeleteRedirectParameters(Request $request, $entity, &$redirectPage) { |
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| 189 | |||
| 190 | /** |
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| 191 | * Builds up the parameters of the list page filters. |
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| 192 | * |
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| 193 | * @param Request $request |
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| 194 | * the current application |
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| 195 | * @param EntityDefinition $definition |
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| 196 | * the current entity definition |
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| 197 | * @param array &$filter |
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| 198 | * will hold a map of fields to request parameters for the filters |
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| 199 | * @param boolean $filterActive |
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| 200 | * reference, will be true if at least one filter is active |
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| 201 | * @param array $filterToUse |
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| 202 | * reference, will hold a map of fields to integers (0 or 1) which boolean filters are active |
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| 203 | * @param array $filterOperators |
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| 204 | * reference, will hold a map of fields to operators for AbstractData::listEntries() |
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| 205 | */ |
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| 206 | protected function buildUpListFilter(Request $request, EntityDefinition $definition, &$filter, &$filterActive, &$filterToUse, &$filterOperators) { |
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| 207 | foreach ($definition->getFilter() as $filterField) { |
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| 208 | $type = $definition->getType($filterField); |
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| 209 | $filter[$filterField] = $request->get('crudFilter'.$filterField); |
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| 210 | if ($filter[$filterField]) { |
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| 211 | $filterActive = true; |
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| 212 | if ($type === 'boolean') { |
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| 213 | $filterToUse[$filterField] = $filter[$filterField] == 'true' ? 1 : 0; |
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| 214 | $filterOperators[$filterField] = '='; |
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| 215 | } else if ($type === 'many') { |
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| 216 | $filter[$filterField] = array_map(function($value) { |
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| 217 | return ['id' => $value]; |
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| 218 | }, $filter[$filterField]); |
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| 219 | $filterToUse[$filterField] = $filter[$filterField]; |
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| 220 | } else { |
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| 221 | $filterToUse[$filterField] = '%'.$filter[$filterField].'%'; |
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| 222 | $filterOperators[$filterField] = 'LIKE'; |
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| 223 | } |
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| 224 | } |
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| 225 | } |
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| 226 | } |
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| 227 | |||
| 228 | /** |
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| 229 | * Setups the templates. |
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| 230 | * |
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| 231 | * @param Application $app |
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| 232 | * the Application instance of the Silex application |
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| 233 | */ |
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| 234 | protected function setupTemplates(Application $app) { |
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| 243 | |||
| 244 | /** |
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| 245 | * Setups the routes. |
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| 246 | * |
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| 247 | * @param Application $app |
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| 248 | * the Application instance of the Silex application |
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| 249 | * |
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| 250 | * @return mixed |
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| 251 | * the created controller factory |
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| 252 | */ |
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| 253 | protected function setupRoutes(Application $app) { |
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| 294 | |||
| 295 | /** |
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| 296 | * Setups i18n. |
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| 297 | * |
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| 298 | * @param Application $app |
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| 299 | * the Application instance of the Silex application |
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| 300 | */ |
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| 301 | protected function setupI18n(Application $app) { |
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| 311 | |||
| 312 | /** |
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| 313 | * Implements ControllerProviderInterface::connect() connecting this |
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| 314 | * controller. |
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| 315 | * |
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| 316 | * @param Application $app |
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| 317 | * the Application instance of the Silex application |
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| 318 | * |
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| 319 | * @return \SilexController\Collection |
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| 320 | * this method is expected to return the used ControllerCollection instance |
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| 321 | */ |
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| 322 | public function connect(Application $app) { |
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| 328 | |||
| 329 | /** |
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| 330 | * The controller for the "create" action. |
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| 331 | * |
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| 332 | * @param Application $app |
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| 333 | * the Silex application |
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| 334 | * @param string $entity |
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| 335 | * the current entity |
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| 336 | * |
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| 337 | * @return Response |
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| 338 | * the HTTP response of this action |
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| 339 | */ |
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| 340 | public function create(Application $app, $entity) { |
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| 345 | |||
| 346 | /** |
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| 347 | * The controller for the "show list" action. |
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| 348 | * |
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| 349 | * @param Request $request |
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| 350 | * the current request |
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| 351 | * @param Application $app |
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| 352 | * the Silex application |
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| 353 | * @param string $entity |
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| 354 | * the current entity |
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| 355 | * |
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| 356 | * @return Response |
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| 357 | * the HTTP response of this action or 404 on invalid input |
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| 358 | */ |
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| 359 | public function showList(Request $request, Application $app, $entity) { |
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| 404 | |||
| 405 | /** |
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| 406 | * The controller for the "show" action. |
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| 407 | * |
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| 408 | * @param Application $app |
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| 409 | * the Silex application |
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| 410 | * @param string $entity |
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| 411 | * the current entity |
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| 412 | * @param string $id |
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| 413 | * the instance id to show |
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| 414 | * |
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| 415 | * @return Response |
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| 416 | * the HTTP response of this action or 404 on invalid input |
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| 417 | */ |
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| 418 | public function show(Application $app, $entity, $id) { |
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| 453 | |||
| 454 | /** |
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| 455 | * The controller for the "edit" action. |
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| 456 | * |
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| 457 | * @param Application $app |
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| 458 | * the Silex application |
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| 459 | * @param string $entity |
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| 460 | * the current entity |
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| 461 | * @param string $id |
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| 462 | * the instance id to edit |
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| 463 | * |
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| 464 | * @return Response |
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| 465 | * the HTTP response of this action or 404 on invalid input |
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| 466 | */ |
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| 467 | public function edit(Application $app, $entity, $id) { |
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| 476 | |||
| 477 | /** |
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| 478 | * The controller for the "delete" action. |
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| 479 | * |
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| 480 | * @param Application $app |
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| 481 | * the Silex application |
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| 482 | * @param string $entity |
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| 483 | * the current entity |
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| 484 | * @param string $id |
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| 485 | * the instance id to delete |
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| 486 | * |
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| 487 | * @return Response |
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| 488 | * redirects to the entity list page or 404 on invalid input |
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| 489 | */ |
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| 490 | public function delete(Application $app, $entity, $id) { |
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| 518 | |||
| 519 | /** |
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| 520 | * The controller for the "render file" action. |
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| 521 | * |
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| 522 | * @param Application $app |
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| 523 | * the Silex application |
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| 524 | * @param string $entity |
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| 525 | * the current entity |
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| 526 | * @param string $id |
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| 527 | * the instance id |
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| 528 | * @param string $field |
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| 529 | * the field of the file to render of the instance |
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| 530 | * |
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| 531 | * @return Response |
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| 532 | * the rendered file |
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| 533 | */ |
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| 534 | public function renderFile(Application $app, $entity, $id, $field) { |
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| 543 | |||
| 544 | /** |
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| 545 | * The controller for the "delete file" action. |
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| 546 | * |
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| 547 | * @param Application $app |
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| 548 | * the Silex application |
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| 549 | * @param string $entity |
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| 550 | * the current entity |
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| 551 | * @param string $id |
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| 552 | * the instance id |
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| 553 | * @param string $field |
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| 554 | * the field of the file to delete of the instance |
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| 555 | * |
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| 556 | * @return Response |
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| 557 | * redirects to the instance details page or 404 on invalid input |
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| 558 | */ |
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| 559 | public function deleteFile(Application $app, $entity, $id, $field) { |
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| 574 | |||
| 575 | /** |
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| 576 | * The controller for serving static files. |
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| 577 | * |
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| 578 | * @param Request $request |
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| 579 | * the current request |
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| 580 | * @param Application $app |
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| 581 | * the Silex application |
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| 582 | * |
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| 583 | * @return Response |
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| 584 | * redirects to the instance details page or 404 on invalid input |
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| 585 | */ |
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| 586 | public function staticFile(Request $request, Application $app) { |
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| 607 | |||
| 608 | /** |
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| 609 | * The controller for setting the locale. |
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| 610 | * |
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| 611 | * @param Request $request |
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| 612 | * the current request |
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| 613 | * @param Application $app |
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| 614 | * the Silex application |
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| 615 | * @param string $locale |
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| 616 | * the new locale |
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| 617 | * |
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| 618 | * @return Response |
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| 619 | * redirects to the instance details page or 404 on invalid input |
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| 620 | */ |
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| 621 | public function setLocale(Request $request, Application $app, $locale) { |
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| 633 | } |
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| 634 |
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This check looks for multiple assignments in successive lines of code. It will report an issue if the operators are not in a straight line.
To visualize
will produce issues in the first and second line, while this second example
will produce no issues.