Complex classes like Uploadable 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 Uploadable, and based on these observations, apply Extract Interface, too.
| 1 | <?php |
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| 17 | trait Uploadable |
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| 18 | { |
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| 19 | /** @var UploadOptions */ |
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| 20 | protected $uploadOptions; |
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| 21 | |||
| 22 | /** |
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| 23 | * Boot the trait. |
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| 24 | */ |
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| 25 | public static function bootUploadable() |
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| 60 | |||
| 61 | /** |
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| 62 | * Retrive a specifice UploadOptions for this model, or return default UploadOptions |
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| 63 | * @return UploadOptions |
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| 64 | */ |
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| 65 | public function getUploadOptionsOrDefault() : UploadOptions |
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| 75 | |||
| 76 | /** |
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| 77 | * This function will throw an exception when any of the options is missing or invalid. |
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| 78 | * @throws InvalidOption |
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| 79 | */ |
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| 80 | public function guardAgainstInvalidUploadOptions() |
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| 89 | |||
| 90 | /** |
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| 91 | * Handle file upload. |
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| 92 | */ |
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| 93 | public function uploadFiles() |
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| 115 | |||
| 116 | /** |
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| 117 | * Upload a file releted to a passed attribute name |
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| 118 | * @param string $uploadField |
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| 119 | */ |
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| 120 | public function uploadFile(string $uploadField) |
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| 131 | |||
| 132 | /** |
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| 133 | * Get an UploadedFile, generate new name, and save it in destination path. |
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| 134 | * Return empty string if it fails, otherwise return the saved file name. |
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| 135 | * @param UploadedFile $uploadedFile |
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| 136 | * @param string $uploadAttribute |
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| 137 | * @return string |
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| 138 | */ |
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| 139 | public function doUpload(UploadedFile $uploadedFile, $uploadAttribute) : string |
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| 168 | |||
| 169 | /** |
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| 170 | * Generate a new file name for uploaded file. |
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| 171 | * Return empty string if uploadedFile is null, otherwise return the new file name.. |
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| 172 | * @param UploadedFile $uploadedFile |
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| 173 | * @param string $uploadField |
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| 174 | * @return string |
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| 175 | */ |
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| 176 | public function generateNewUploadFileName(UploadedFile $uploadedFile, string $uploadField) : string |
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| 194 | |||
| 195 | /** |
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| 196 | * Check if file need a new name and return it, otherwise return empty string. |
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| 197 | * @param UploadedFile $uploadedFile |
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| 198 | * @return string |
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| 199 | */ |
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| 200 | protected function calcolateNewUploadFileName(UploadedFile $uploadedFile) : string |
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| 213 | |||
| 214 | /** |
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| 215 | * delete all Uploaded Files |
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| 216 | */ |
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| 217 | public function deleteUploadedFiles() |
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| 224 | |||
| 225 | /** |
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| 226 | * Delete upload file related to passed attribute name |
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| 227 | * @param string $uploadField |
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| 228 | */ |
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| 229 | public function deleteUploadedFile(string $uploadField) |
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| 251 | |||
| 252 | /** |
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| 253 | * Reset model attribute and update db field |
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| 254 | * @param string $uploadField |
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| 255 | */ |
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| 256 | protected function setBlanckAttributeAndDB(string $uploadField) |
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| 266 | |||
| 267 | /** |
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| 268 | * Return true If All Upload atrributes Are Empty or |
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| 269 | * if the uploads array is not set. |
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| 270 | * @return bool |
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| 271 | */ |
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| 272 | public function checkIfAllUploadFieldsAreEmpty() : bool |
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| 283 | |||
| 284 | /** |
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| 285 | * Check all attributes upload path, and try to create dir if not already exists. |
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| 286 | * Return false if it fails to create all founded dirs. |
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| 287 | * @return bool |
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| 288 | */ |
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| 289 | public function checkOrCreateAllUploadBasePaths() : bool |
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| 299 | |||
| 300 | /** |
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| 301 | * Check uploads property and return a uploads class field |
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| 302 | * or empty array if somethings wrong. |
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| 303 | * @return array |
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| 304 | */ |
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| 305 | public function getUploadsAttributesSafe() : array |
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| 313 | |||
| 314 | /** |
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| 315 | * Check attribute upload path, and try to create dir if not already exists. |
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| 316 | * Return false if it fails to create the dir. |
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| 317 | * @param string $uploadField |
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| 318 | * @return bool |
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| 319 | */ |
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| 320 | public function checkOrCreateUploadBasePath(string $uploadField) : bool |
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| 326 | |||
| 327 | /** |
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| 328 | * Return the upload path for the passed attribute and try to create it if not exists. |
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| 329 | * Returns empty string if dir if not exists and fails to create it. |
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| 330 | * @param string $uploadField |
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| 331 | * @return string |
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| 332 | */ |
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| 333 | public function getUploadFilePath(string $uploadField) : string |
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| 351 | |||
| 352 | /** |
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| 353 | * Return the specific upload path (by uploadPaths prop) for the passed attribute if exists. |
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| 354 | * @param string $uploadField |
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| 355 | * @return string |
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| 356 | */ |
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| 357 | public function getUploadFilePathSpecific(string $uploadField) : string |
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| 368 | |||
| 369 | /** |
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| 370 | * Calcolate the new name for ALL uploaded files and set relative upload attributes |
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| 371 | */ |
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| 372 | public function generateAllNewUploadFileNameAndSetAttribute() |
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| 378 | |||
| 379 | /** |
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| 380 | * Calcolate the new name for uploaded file relative to passed attribute name and set the upload attribute |
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| 381 | * @param string $uploadField |
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| 382 | */ |
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| 383 | public function generateNewUploadFileNameAndSetAttribute(string $uploadField) |
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| 399 | } |
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| 400 |
This check looks for methods that are used by a trait but not required by it.
To illustrate, let’s look at the following code example
The trait
Idableprovides a methodequalsIdthat in turn relies on the methodgetId(). If this method does not exist on a class mixing in this trait, the method will fail.Adding the
getId()as an abstract method to the trait will make sure it is available.