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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| 13 | class CategoriesController extends Controller |
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| 14 | { |
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| 15 | private $pagination = 50; |
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| 16 | |||
| 17 | /** |
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| 18 | * Display a listing of the resource. |
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| 19 | * |
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| 20 | * @param \Illuminate\Http\Request $request |
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| 21 | * @return \Illuminate\Http\Response |
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| 22 | */ |
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| 23 | public function index(Request $request) |
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| 27 | |||
| 28 | /** |
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| 29 | * Show the form for creating a new resource. |
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| 30 | * |
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| 31 | * @return \Illuminate\Http\Response |
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| 32 | */ |
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| 33 | public function create() |
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| 37 | |||
| 38 | /** |
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| 39 | * Store a newly created resource in storage. |
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| 40 | * |
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| 41 | * @param \Illuminate\Http\Request $request |
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| 42 | * |
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| 43 | * @return \Illuminate\Http\RedirectResponse |
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| 44 | */ |
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| 45 | View Code Duplication | public function store(CategoryFormRequest $request) |
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| 58 | |||
| 59 | /** |
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| 60 | * Show the form for editing the specified resource. |
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| 61 | * |
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| 62 | * @param \App\Models\Category $category |
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| 63 | * |
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| 64 | * @return void |
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| 65 | */ |
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| 66 | public function edit(Category $category) |
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| 70 | |||
| 71 | /** |
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| 72 | * Update the specified resource in storage. |
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| 73 | * |
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| 74 | * @param \Illuminate\Http\Request $request |
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| 75 | * @param \App\Models\Category $category |
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| 76 | * |
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| 77 | * @return \Illuminate\Http\RedirectResponse |
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| 78 | */ |
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| 79 | View Code Duplication | public function update(CategoryFormRequest $request, Category $category) |
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| 91 | |||
| 92 | /** |
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| 93 | * Remove the specified resource from storage. |
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| 94 | * |
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| 95 | * @param \Illuminate\Http\Request $request |
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| 96 | * @param \App\Models\Category $category |
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| 97 | * |
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| 98 | * @return array |
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| 99 | * @throws \Exception |
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| 100 | */ |
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| 101 | public function destroy(Request $request, Category $category) |
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| 121 | |||
| 122 | View Code Duplication | public function resource(Request $request) |
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| 132 | } |
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| 133 |
This check looks from parameters that have been defined for a function or method, but which are not used in the method body.