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 ApiController 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 ApiController, and based on these observations, apply Extract Interface, too.
| 1 | <?php namespace Taskforcedev\LaravelForum\Http\Controllers; |
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| 21 | class ApiController extends BaseController |
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| 22 | { |
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| 23 | public function forumCategoryStore(Request $request) |
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| 24 | { |
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| 25 | $data = [ |
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| 26 | "name" => $request->input('name'), |
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| 27 | ]; |
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| 28 | |||
| 29 | $response = $this->adminCheck(); |
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| 30 | if (isset($response)) { |
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| 31 | return $response; |
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| 32 | } |
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| 33 | |||
| 34 | /* If data invalid return bad request */ |
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| 35 | if (!ForumCategory::valid($data)) { |
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| 36 | return response('Bad Request', 400); |
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| 37 | } |
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| 38 | |||
| 39 | ForumCategory::create($data); |
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| 40 | |||
| 41 | /* After creating a category lets redirect back to the category list. */ |
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| 42 | return redirect()->route('laravel-forum.admin.categories'); |
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| 43 | } |
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| 44 | |||
| 45 | public function forumStore(Request $request) |
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| 46 | { |
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| 47 | $data = [ |
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| 48 | "name" => $request->input('name'), |
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| 49 | "description" => $request->input('description'), |
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| 50 | "category_id" => $request->input('category'), |
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| 51 | ]; |
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| 52 | |||
| 53 | $response = $this->adminCheck(); |
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| 54 | if (isset($response)) { |
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| 55 | return $response; |
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| 56 | } |
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| 57 | |||
| 58 | if (!Forum::valid($data)) { |
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| 59 | return response('Bad Request', 400); |
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| 60 | } |
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| 61 | |||
| 62 | Forum::create($data); |
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| 63 | |||
| 64 | /* After creating a forum lets redirect back to the forum list. */ |
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| 65 | return redirect()->route('laravel-forum.admin.forums'); |
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| 66 | } |
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| 67 | |||
| 68 | public function forumPostStore(Request $request) |
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| 69 | { |
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| 70 | if (!Auth::check()) { |
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| 71 | return response('Unauthorized', 401); |
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| 72 | } |
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| 73 | |||
| 74 | $user = Auth::user(); |
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| 75 | |||
| 76 | $forum_id = $request->input('forum_id'); |
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| 77 | |||
| 78 | $data = [ |
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| 79 | "author_id" => $user->id, |
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| 80 | "title" => $request->input('title'), |
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| 81 | "body" => $this->sanitizeData($request->input('body')), |
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| 82 | "forum_id" => $forum_id |
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| 83 | ]; |
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| 84 | |||
| 85 | if (!ForumPost::valid($data)) { |
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| 86 | return response('Bad Request', 400); |
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| 87 | } |
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| 88 | |||
| 89 | $post = ForumPost::create($data); |
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| 90 | |||
| 91 | event(new PostCreated($post, $user)); |
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| 92 | return redirect()->route('laravel-forum.view.post', [$forum_id , $post->id]); |
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| 93 | } |
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| 94 | |||
| 95 | public function forumReplyStore(Request $request) |
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| 96 | { |
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| 97 | if (!Auth::check()) { |
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| 98 | return response('Unauthorized', 401); |
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| 99 | } |
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| 100 | |||
| 101 | $user = Auth::user(); |
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| 102 | |||
| 103 | $forum_id = $request->input('forum_id'); |
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| 104 | $post_id = $request->input('post_id'); |
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| 105 | |||
| 106 | $data = [ |
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| 107 | 'author_id' => $user->id, |
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| 108 | 'body' => $this->sanitizeData($request->input('body')), |
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| 109 | 'post_id' => $post_id, |
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| 110 | ]; |
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| 111 | |||
| 112 | if (!ForumReply::valid($data)) { |
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| 113 | return redirect()->route('laravel-forum.view.post', [$forum_id, $post_id]); |
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| 114 | } |
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| 115 | |||
| 116 | $reply = ForumReply::create($data); |
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| 117 | |||
| 118 | event(new PostReply($reply, $user)); |
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| 119 | return redirect()->route('laravel-forum.view.post', [$forum_id, $post_id]); |
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| 120 | } |
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| 121 | |||
| 122 | private function adminCheck() |
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| 128 | |||
| 129 | private function sanitizeData($data) |
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| 141 | |||
| 142 | View Code Duplication | public function lockPost(Request $request, $id) |
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| 143 | { |
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| 157 | |||
| 158 | View Code Duplication | public function unlockPost(Request $request, $id) |
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| 173 | |||
| 174 | View Code Duplication | public function stickyPost(Request $request, $id) |
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| 189 | |||
| 190 | View Code Duplication | public function unstickyPost(Request $request, $id) |
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| 205 | |||
| 206 | private function postExists($post_id) |
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| 215 | |||
| 216 | View Code Duplication | public function postDelete($forum_id, $post_id) |
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| 217 | { |
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| 218 | if (!$this->canAdministrate() && !$this->canModerate()) { |
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| 219 | return response('Unauthorised', 401); |
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| 220 | } |
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| 221 | |||
| 222 | $post = $this->postExists($post_id); |
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| 223 | if (!$post) { |
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| 224 | return response('Post not found', 404); |
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| 225 | } |
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| 226 | |||
| 227 | $post->delete(); |
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| 228 | return response('Post Deleted', 200); |
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| 229 | } |
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| 230 | |||
| 231 | View Code Duplication | public function forumDelete(Request $request) |
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| 247 | |||
| 248 | private function forumExists($id) |
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| 257 | |||
| 258 | View Code Duplication | public function forumCategoryDelete(Request $request) |
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| 274 | |||
| 275 | private function forumCategoryExists(Request $request, $id) |
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| 284 | } |
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| 285 |
This check looks for function calls that miss required arguments.