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.