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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| 38 | class DatabaseController extends Controller |
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| 39 | { |
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| 40 | /** |
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| 41 | * Display database host index. |
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| 42 | * |
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| 43 | * @param \Illuminate\Http\Request $request |
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| 44 | * @return \Illuminate\View\View |
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| 45 | */ |
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| 46 | public function index(Request $request) |
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| 53 | |||
| 54 | /** |
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| 55 | * Display database host to user. |
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| 56 | * |
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| 57 | * @param \Illuminate\Http\Request $request |
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| 58 | * @param int $id |
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| 59 | * @return \Illuminate\View\View |
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| 60 | */ |
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| 61 | public function view(Request $request, $id) |
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| 68 | |||
| 69 | /** |
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| 70 | * Handle post request to create database host. |
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| 71 | * |
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| 72 | * @param \Illuminate\Http\Request $request |
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| 73 | * @return \Illuminate\Http\RedirectResponse |
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| 74 | */ |
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| 75 | public function create(Request $request) |
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| 76 | { |
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| 77 | $repo = new DatabaseRepository; |
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| 78 | |||
| 79 | try { |
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| 80 | $host = $repo->add($request->intersect([ |
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| 81 | 'name', 'username', 'password', |
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| 82 | 'host', 'port', 'node_id', |
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| 83 | ])); |
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| 84 | Alert::success('Successfully created new database host on the system.')->flash(); |
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| 85 | |||
| 86 | return redirect()->route('admin.databases.view', $host->id); |
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| 87 | } catch (\PDOException $ex) { |
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| 88 | Alert::danger($ex->getMessage())->flash(); |
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| 89 | } catch (DisplayValidationException $ex) { |
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| 90 | return redirect()->route('admin.databases')->withErrors(json_decode($ex->getMessage())); |
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| 91 | } catch (\Exception $ex) { |
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| 92 | Log::error($ex); |
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| 93 | Alert::danger('An error was encountered while trying to process this request. This error has been logged.')->flash(); |
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| 94 | } |
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| 95 | |||
| 96 | return redirect()->route('admin.databases'); |
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| 97 | } |
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| 98 | |||
| 99 | /** |
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| 100 | * Handle post request to update a database host. |
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| 101 | * |
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| 102 | * @param \Illuminate\Http\Request $request |
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| 103 | * @param int $id |
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| 104 | * @return \Illuminate\Http\RedirectResponse |
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| 105 | */ |
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| 106 | View Code Duplication | public function update(Request $request, $id) |
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| 135 | } |
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| 136 |
This check looks from parameters that have been defined for a function or method, but which are not used in the method body.