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:
1 | <?php |
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14 | class PostsController extends Controller |
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15 | { |
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16 | private $pagination = 15; |
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17 | |||
18 | /** |
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19 | * Display a listing of the resource. |
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20 | * |
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21 | * @param \Illuminate\Http\Request $request |
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22 | * @return \Illuminate\Http\Response |
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23 | */ |
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24 | public function index(Request $request) |
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28 | |||
29 | /** |
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30 | * Show the form for creating a new resource. |
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31 | * |
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32 | * @return \Illuminate\Http\Response |
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33 | */ |
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34 | public function create() |
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38 | |||
39 | /** |
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40 | * Store a newly created resource in storage. |
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41 | * |
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42 | * @param \App\Http\Requests\PostFormRequest $request |
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43 | * |
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44 | * @return \Illuminate\Http\RedirectResponse |
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45 | */ |
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46 | View Code Duplication | public function store(PostFormRequest $request) |
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65 | |||
66 | /** |
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67 | * Show the form for editing the specified resource. |
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68 | * |
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69 | * @param \App\Models\Post $post |
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70 | * |
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71 | * @return void |
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72 | */ |
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73 | public function edit(Post $post) |
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77 | |||
78 | /** |
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79 | * Update the specified resource in storage. |
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80 | * |
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81 | * @param \App\Http\Requests\PostFormRequest $request |
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82 | * @param Post $post |
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83 | * |
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84 | * @return \Illuminate\Http\RedirectResponse |
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85 | */ |
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86 | View Code Duplication | public function update(PostFormRequest $request, Post $post) |
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104 | |||
105 | /** |
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106 | * Remove the specified resource from storage. |
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107 | * |
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108 | * @param \Illuminate\Http\Request $request |
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109 | * @param Post $post |
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110 | * |
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111 | * @return array |
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112 | * @throws \Exception |
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113 | */ |
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114 | public function destroy(Request $request, Post $post) |
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131 | |||
132 | View Code Duplication | public function resource(Request $request) |
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142 | } |
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143 |
This check looks from parameters that have been defined for a function or method, but which are not used in the method body.