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 BaseApiController 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 BaseApiController, and based on these observations, apply Extract Interface, too.
1 | <?php |
||
10 | class BaseApiController extends Controller |
||
11 | { |
||
12 | /** |
||
13 | * The errorHandler implementation. |
||
14 | * |
||
15 | * @var errorHandler |
||
16 | */ |
||
17 | protected $errorHandler; |
||
18 | |||
19 | /** |
||
20 | * The config implementation. |
||
21 | * |
||
22 | * @var config |
||
23 | */ |
||
24 | protected $config; |
||
25 | |||
26 | /** |
||
27 | * The model implementation. |
||
28 | * |
||
29 | * @var model |
||
30 | */ |
||
31 | protected $model; |
||
32 | |||
33 | /** |
||
34 | * Create new BaseApiController instance. |
||
35 | * |
||
36 | * @param errorHandler |
||
37 | */ |
||
38 | public function __construct(ErrorHandler $errorHandler, CoreConfig $config) |
||
54 | |||
55 | /** |
||
56 | * Fetch all records with relations from model repository. |
||
57 | * |
||
58 | * @param string $sortBy |
||
59 | * @param boolean $desc |
||
60 | * @return \Illuminate\Http\Response |
||
61 | */ |
||
62 | public function getIndex() |
||
70 | |||
71 | /** |
||
72 | * Fetch the single object with relations from model repository. |
||
73 | * |
||
74 | * @param integer $id |
||
75 | * @return \Illuminate\Http\Response |
||
76 | */ |
||
77 | View Code Duplication | public function getFind($id) |
|
85 | |||
86 | /** |
||
87 | * Paginate all records with relations from model repository |
||
88 | * that matche the given query. |
||
89 | * |
||
90 | * @param string $query |
||
91 | * @param integer $perPage |
||
92 | * @param string $sortBy |
||
93 | * @param boolean $desc |
||
94 | * @return \Illuminate\Http\Response |
||
95 | */ |
||
96 | View Code Duplication | public function getSearch($query = '', $perPage = 15, $sortBy = 'created_at', $desc = 1) |
|
104 | |||
105 | /** |
||
106 | * Fetch records from the storage based on the given |
||
107 | * condition. |
||
108 | * |
||
109 | * @param \Illuminate\Http\Request $request |
||
110 | * @param string $sortBy |
||
111 | * @param boolean $desc |
||
112 | * @return \Illuminate\Http\Response |
||
113 | */ |
||
114 | View Code Duplication | public function postFindby(Request $request, $sortBy = 'created_at', $desc = 1) |
|
122 | |||
123 | /** |
||
124 | * Fetch the first record from the storage based on the given |
||
125 | * condition. |
||
126 | * |
||
127 | * @param \Illuminate\Http\Request $request |
||
128 | * @return \Illuminate\Http\Response |
||
129 | */ |
||
130 | View Code Duplication | public function postFirst(Request $request) |
|
138 | |||
139 | /** |
||
140 | * Paginate all records with relations from model repository. |
||
141 | * |
||
142 | * @param integer $perPage |
||
143 | * @param string $sortBy |
||
144 | * @param boolean $desc |
||
145 | * @return \Illuminate\Http\Response |
||
146 | */ |
||
147 | View Code Duplication | public function getPaginate($perPage = 15, $sortBy = 'created_at', $desc = 1) |
|
155 | |||
156 | /** |
||
157 | * Fetch all records with relations based on |
||
158 | * the given condition from storage in pages. |
||
159 | * |
||
160 | * @param \Illuminate\Http\Request $request |
||
161 | * @param integer $perPage |
||
162 | * @param string $sortBy |
||
163 | * @param boolean $desc |
||
164 | * @return \Illuminate\Http\Response |
||
165 | */ |
||
166 | View Code Duplication | public function postPaginateby(Request $request, $perPage = 15, $sortBy = 'created_at', $desc = 1) |
|
174 | |||
175 | /** |
||
176 | * Save the given model to repository. |
||
177 | * |
||
178 | * @param \Illuminate\Http\Request $request |
||
179 | * @return \Illuminate\Http\Response |
||
180 | */ |
||
181 | public function postSave(Request $request) |
||
207 | |||
208 | /** |
||
209 | * Delete by the given id from model repository. |
||
210 | * |
||
211 | * @param integer $id |
||
212 | * @return \Illuminate\Http\Response |
||
213 | */ |
||
214 | public function getDelete($id) |
||
221 | |||
222 | /** |
||
223 | * Check if the logged in user can do the given permission. |
||
224 | * |
||
225 | * @param string $permission |
||
226 | * @return void |
||
227 | */ |
||
228 | private function checkPermission($permission) |
||
246 | } |
||
247 |
Our type inference engine has found an assignment to a property that is incompatible with the declared type of that property.
Either this assignment is in error or the assigned type should be added to the documentation/type hint for that property..