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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33 | View Code Duplication | class FbApplicationController extends Controller |
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34 | { |
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35 | /** |
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36 | * @ApiDoc( |
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37 | * resource=true, |
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38 | * description="Lists Facebook Applications", |
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39 | * statusCodes={ |
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40 | * 200="Returned on success.", |
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41 | * 500="Unexpected error." |
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42 | * } |
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43 | * ) |
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44 | * @Route("/api/{version}/facebook/applications/", options={"expose"=true}, defaults={"version"="v1"}, name="swp_api_list_facebook_applications") |
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45 | * @Method("GET") |
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46 | */ |
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47 | 2 | public function listAction(Request $request) |
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59 | |||
60 | /** |
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61 | * @ApiDoc( |
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62 | * resource=true, |
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63 | * description="Create Facebook application", |
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64 | * statusCodes={ |
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65 | * 201="Returned on success.", |
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66 | * 400="Returned when not valid data." |
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67 | * }, |
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68 | * input="SWP\Bundle\CoreBundle\Form\Type\FacebookApplicationType" |
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69 | * ) |
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70 | * @Route("/api/{version}/facebook/applications/", options={"expose"=true}, defaults={"version"="v1"}, name="swp_api_create_facebook_applications") |
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71 | * @Method("POST") |
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72 | */ |
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73 | 4 | public function createAction(Request $request) |
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89 | |||
90 | /** |
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91 | * @ApiDoc( |
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92 | * resource=true, |
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93 | * description="Delete Facebook application", |
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94 | * statusCodes={ |
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95 | * 204="Returned on success.", |
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96 | * 500="Unexpected error.", |
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97 | * 404="Application not found", |
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98 | * 409="Application is used by page" |
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99 | * } |
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100 | * ) |
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101 | * @Route("/api/{version}/facebook/applications/{id}", options={"expose"=true}, defaults={"version"="v1"}, name="swp_api_delete_facebook_applications") |
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102 | * @Method("DELETE") |
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103 | */ |
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104 | 1 | public function deleteAction($id) |
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119 | |||
120 | /** |
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121 | * @param ApplicationInterface $application |
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122 | */ |
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123 | 4 | private function checkIfApplicationExists(ApplicationInterface $application) |
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132 | } |
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133 |
Duplicated code is one of the most pungent code smells. If you need to duplicate the same code in three or more different places, we strongly encourage you to look into extracting the code into a single class or operation.
You can also find more detailed suggestions in the “Code” section of your repository.