Duplicate code is one of the most pungent code smells. A rule that is often used is to re-structure code once it is duplicated in three or more places.
Common duplication problems, and corresponding solutions are:
Complex classes like HasRoles 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 HasRoles, and based on these observations, apply Extract Interface, too.
| 1 | <?php |
||
| 14 | trait HasRoles |
||
| 15 | { |
||
| 16 | use HasPermissions; |
||
| 17 | |||
| 18 | public static function bootHasRoles() |
||
| 33 | |||
| 34 | /** |
||
| 35 | * A model may have multiple roles. |
||
| 36 | */ |
||
| 37 | public function roles(): MorphToMany |
||
| 47 | |||
| 48 | /** |
||
| 49 | * A model may have multiple direct permissions. |
||
| 50 | */ |
||
| 51 | public function permissions(): MorphToMany |
||
| 61 | |||
| 62 | /** |
||
| 63 | * Scope the model query to certain roles only. |
||
| 64 | * |
||
| 65 | * @param \Illuminate\Database\Eloquent\Builder $query |
||
| 66 | * @param string|array|\Spatie\Permission\Contracts\Role|\Illuminate\Support\Collection $roles |
||
| 67 | * |
||
| 68 | * @return \Illuminate\Database\Eloquent\Builder |
||
| 69 | */ |
||
| 70 | public function scopeRole(Builder $query, $roles): Builder |
||
| 96 | |||
| 97 | /** |
||
| 98 | * @param string|array|\Spatie\Permission\Contracts\Permission|\Illuminate\Support\Collection $permissions |
||
| 99 | * |
||
| 100 | * @return array |
||
| 101 | */ |
||
| 102 | protected function convertToPermissionModels($permissions): array |
||
| 118 | |||
| 119 | /** |
||
| 120 | * Scope the model query to certain permissions only. |
||
| 121 | * |
||
| 122 | * @param \Illuminate\Database\Eloquent\Builder $query |
||
| 123 | * @param string|array|\Spatie\Permission\Contracts\Permission|\Illuminate\Support\Collection $permissions |
||
| 124 | * |
||
| 125 | * @return \Illuminate\Database\Eloquent\Builder |
||
| 126 | */ |
||
| 127 | public function scopePermission(Builder $query, $permissions): Builder |
||
| 155 | |||
| 156 | /** |
||
| 157 | * Assign the given role to the model. |
||
| 158 | * |
||
| 159 | * @param array|string|\Spatie\Permission\Contracts\Role ...$roles |
||
| 160 | * |
||
| 161 | * @return $this |
||
| 162 | */ |
||
| 163 | View Code Duplication | public function assignRole(...$roles) |
|
| 181 | |||
| 182 | /** |
||
| 183 | * Revoke the given role from the model. |
||
| 184 | * |
||
| 185 | * @param string|\Spatie\Permission\Contracts\Role $role |
||
| 186 | */ |
||
| 187 | public function removeRole($role) |
||
| 191 | |||
| 192 | /** |
||
| 193 | * Remove all current roles and set the given ones. |
||
| 194 | * |
||
| 195 | * @param array|\Spatie\Permission\Contracts\Role|string ...$roles |
||
| 196 | * |
||
| 197 | * @return $this |
||
| 198 | */ |
||
| 199 | public function syncRoles(...$roles) |
||
| 205 | |||
| 206 | /** |
||
| 207 | * Determine if the model has (one of) the given role(s). |
||
| 208 | * |
||
| 209 | * @param string|array|\Spatie\Permission\Contracts\Role|\Illuminate\Support\Collection $roles |
||
| 210 | * |
||
| 211 | * @return bool |
||
| 212 | */ |
||
| 213 | public function hasRole($roles): bool |
||
| 239 | |||
| 240 | /** |
||
| 241 | * Determine if the model has any of the given role(s). |
||
| 242 | * |
||
| 243 | * @param string|array|\Spatie\Permission\Contracts\Role|\Illuminate\Support\Collection $roles |
||
| 244 | * |
||
| 245 | * @return bool |
||
| 246 | */ |
||
| 247 | public function hasAnyRole($roles): bool |
||
| 251 | |||
| 252 | /** |
||
| 253 | * Determine if the model has all of the given role(s). |
||
| 254 | * |
||
| 255 | * @param string|\Spatie\Permission\Contracts\Role|\Illuminate\Support\Collection $roles |
||
| 256 | * |
||
| 257 | * @return bool |
||
| 258 | */ |
||
| 259 | public function hasAllRoles($roles): bool |
||
| 279 | |||
| 280 | /** |
||
| 281 | * Determine if the model may perform the given permission. |
||
| 282 | * |
||
| 283 | * @param string|\Spatie\Permission\Contracts\Permission $permission |
||
| 284 | * @param string|null $guardName |
||
| 285 | * |
||
| 286 | * @return bool |
||
| 287 | */ |
||
| 288 | public function hasPermissionTo($permission, $guardName = null): bool |
||
| 299 | |||
| 300 | /** |
||
| 301 | * Determine if the model has any of the given permissions. |
||
| 302 | * |
||
| 303 | * @param array ...$permissions |
||
| 304 | * |
||
| 305 | * @return bool |
||
| 306 | */ |
||
| 307 | public function hasAnyPermission(...$permissions): bool |
||
| 321 | |||
| 322 | /** |
||
| 323 | * Determine if the model has, via roles, the given permission. |
||
| 324 | * |
||
| 325 | * @param \Spatie\Permission\Contracts\Permission $permission |
||
| 326 | * |
||
| 327 | * @return bool |
||
| 328 | */ |
||
| 329 | protected function hasPermissionViaRole(Permission $permission): bool |
||
| 333 | |||
| 334 | /** |
||
| 335 | * Determine if the model has the given permission. |
||
| 336 | * |
||
| 337 | * @param string|\Spatie\Permission\Contracts\Permission $permission |
||
| 338 | * |
||
| 339 | * @return bool |
||
| 340 | */ |
||
| 341 | public function hasDirectPermission($permission): bool |
||
| 353 | |||
| 354 | /** |
||
| 355 | * Return all permissions the directory coupled to the model. |
||
| 356 | */ |
||
| 357 | public function getDirectPermissions(): Collection |
||
| 361 | |||
| 362 | /** |
||
| 363 | * Return all the permissions the model has via roles. |
||
| 364 | */ |
||
| 365 | public function getPermissionsViaRoles(): Collection |
||
| 372 | |||
| 373 | /** |
||
| 374 | * Return all the permissions the model has, both directly and via roles. |
||
| 375 | */ |
||
| 376 | public function getAllPermissions(): Collection |
||
| 383 | |||
| 384 | public function getRoleNames(): Collection |
||
| 388 | |||
| 389 | View Code Duplication | protected function getStoredRole($role): Role |
|
| 397 | |||
| 398 | protected function convertPipeToArray(string $pipeString) |
||
| 419 | } |
||
| 420 |
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.