Complex classes like ApiResource often do a lot of different things. To break such a class down, we need to identify a cohesive component within that class. A common approach to find such a component is to look for fields/methods that share the same prefixes, or suffixes. You can also have a look at the cohesion graph to spot any un-connected, or weakly-connected components.
Once you have determined the fields that belong together, you can apply the Extract Class refactoring. If the component makes sense as a sub-class, Extract Subclass is also a candidate, and is often faster.
While breaking up the class, it is a good idea to analyze how other classes use ApiResource, and based on these observations, apply Extract Interface, too.
1 | <?php namespace Arcanedev\LaravelApiHelper\Http; |
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26 | class ApiResource implements ArrayAccess, JsonSerializable, Responsable, UrlRoutable |
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27 | { |
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28 | /* ----------------------------------------------------------------- |
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29 | | Traits |
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30 | | ----------------------------------------------------------------- |
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31 | */ |
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32 | |||
33 | use DelegatesToResource; |
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34 | |||
35 | /* ----------------------------------------------------------------- |
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36 | | Properties |
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37 | | ----------------------------------------------------------------- |
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38 | */ |
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39 | |||
40 | /** |
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41 | * The resource instance. |
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42 | * |
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43 | * @var mixed |
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44 | */ |
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45 | public $resource; |
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46 | |||
47 | /** |
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48 | * The additional data that should be added to the top-level resource array. |
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49 | * |
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50 | * @var array |
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51 | */ |
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52 | public $with = []; |
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53 | |||
54 | /** |
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55 | * The additional meta data that should be added to the resource response. |
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56 | * |
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57 | * Added during response construction by the developer. |
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58 | * |
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59 | * @var array |
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60 | */ |
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61 | public $additional = []; |
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62 | |||
63 | /** |
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64 | * The "data" wrapper that should be applied. |
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65 | * |
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66 | * @var string |
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67 | */ |
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68 | public static $wrap = 'data'; |
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69 | |||
70 | /* ----------------------------------------------------------------- |
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71 | | Constructor |
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72 | | ----------------------------------------------------------------- |
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73 | */ |
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74 | |||
75 | /** |
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76 | * PostTransformer constructor. |
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77 | * |
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78 | * @param mixed $resource |
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79 | */ |
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80 | 4 | public function __construct($resource) |
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84 | |||
85 | /** |
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86 | * Create a new resource instance. |
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87 | * |
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88 | * @param mixed $resource |
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89 | * |
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90 | * @return static |
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91 | */ |
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92 | 4 | public static function make($resource) |
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96 | |||
97 | /* ----------------------------------------------------------------- |
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98 | | Main Methods |
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99 | | ----------------------------------------------------------------- |
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100 | */ |
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101 | |||
102 | /** |
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103 | * Transform the resource into an array. |
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104 | * |
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105 | * @param \Illuminate\Http\Request $request |
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106 | * |
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107 | * @return array |
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108 | */ |
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109 | public function toArray($request) |
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113 | |||
114 | /** |
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115 | * Get any additional data that should be returned with the resource array. |
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116 | * |
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117 | * @param \Illuminate\Http\Request $request |
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118 | * |
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119 | * @return array |
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120 | */ |
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121 | 4 | public function with($request) |
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125 | |||
126 | /** |
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127 | * Add additional meta data to the resource response. |
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128 | * |
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129 | * @param array $data |
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130 | * |
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131 | * @return $this |
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132 | */ |
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133 | public function additional(array $data) |
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139 | |||
140 | /** |
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141 | * Set the string that should wrap the outer-most resource array. |
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142 | * |
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143 | * @param string $value |
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144 | */ |
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145 | public static function wrap($value) |
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149 | |||
150 | /** |
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151 | * Disable wrapping of the outer-most resource array. |
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152 | * |
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153 | * @return void |
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154 | */ |
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155 | public static function withoutWrapping() |
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159 | |||
160 | |||
161 | /** |
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162 | * Customize the response for a request. |
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163 | * |
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164 | * @param \Illuminate\Http\Request $request |
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165 | * @param \Illuminate\Http\JsonResponse $response |
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166 | * |
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167 | * @return void |
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168 | */ |
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169 | 4 | public function withResponse($request, $response) |
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173 | |||
174 | /** |
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175 | * Merge the given attributes. |
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176 | * |
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177 | * @param array $attributes |
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178 | * |
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179 | * @return \Illuminate\Http\Resources\MergeValue |
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180 | */ |
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181 | protected function attributes($attributes) |
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187 | |||
188 | /** |
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189 | * Retrieve a relationship if it has been loaded. |
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190 | * |
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191 | * @param string $relationship |
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192 | * |
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193 | * @return \Illuminate\Http\Resources\MissingValue|mixed |
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194 | */ |
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195 | protected function whenLoaded($relationship) |
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201 | |||
202 | /** |
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203 | * Execute a callback if the given pivot table has been loaded. |
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204 | * |
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205 | * @param string $table |
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206 | * @param mixed $value |
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207 | * @param mixed $default |
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208 | * |
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209 | * @return \Illuminate\Http\Resources\MissingValue|mixed |
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210 | */ |
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211 | protected function whenPivotLoaded($table, $value, $default = null) |
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221 | |||
222 | /** |
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223 | * Resolve the resource to an array. |
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224 | * |
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225 | * @param \Illuminate\Http\Request|null $request |
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226 | * |
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227 | * @return array |
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228 | */ |
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229 | 4 | public function resolve($request = null) |
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247 | |||
248 | /** |
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249 | * Resolve the nested resources to an array. |
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250 | * |
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251 | * @param array $data |
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252 | * @param \Illuminate\Http\Request $request |
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253 | * |
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254 | * @return array |
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255 | */ |
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256 | 4 | protected function resolveNestedRelations($data, $request) |
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269 | |||
270 | /** |
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271 | * Resolve the resource to an array. |
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272 | * |
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273 | * @param \Illuminate\Support\Collection $collection |
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274 | * @param \Illuminate\Http\Request|null $request |
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275 | * |
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276 | * @return array |
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277 | */ |
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278 | public function resolveCollection($collection, $request = null) |
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284 | |||
285 | /** |
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286 | * Transform the resource into an HTTP response. |
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287 | * |
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288 | * @param \Illuminate\Http\Request|null $request |
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289 | * |
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290 | * @return \Illuminate\Http\Response |
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291 | */ |
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292 | 4 | public function response($request = null) |
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298 | |||
299 | /** |
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300 | * Create an HTTP response that represents the object. |
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301 | * |
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302 | * @param \Illuminate\Http\Request $request |
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303 | * |
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304 | * @return \Illuminate\Http\Response|mixed |
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305 | */ |
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306 | 4 | public function toResponse($request) |
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314 | |||
315 | /** |
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316 | * Retrieve a value based on a given condition. |
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317 | * |
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318 | * @param bool $condition |
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319 | * @param mixed $value |
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320 | * @param mixed $default |
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321 | * |
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322 | * @return \Illuminate\Http\Resources\MissingValue|mixed |
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323 | */ |
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324 | protected function when($condition, $value, $default = null) |
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330 | |||
331 | /** |
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332 | * Filter the given data, removing any optional values. |
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333 | * |
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334 | * @param array $data |
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335 | * |
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336 | * @return array |
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337 | */ |
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338 | 4 | protected function filter($data) |
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365 | |||
366 | /** |
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367 | * Merge the given data in at the given index. |
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368 | * |
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369 | * @param array $data |
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370 | * @param int $index |
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371 | * @param array $merge |
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372 | * |
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373 | * @return array |
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374 | */ |
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375 | protected function merge($data, $index, $merge) |
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388 | |||
389 | /** |
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390 | * Merge a value based on a given condition. |
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391 | * |
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392 | * @param bool $condition |
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393 | * @param mixed $value |
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394 | * |
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395 | * @return \Illuminate\Http\Resources\MissingValue|mixed |
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396 | */ |
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397 | protected function mergeWhen($condition, $value) |
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401 | |||
402 | /** |
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403 | * Transform the given value if it is present. |
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404 | * |
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405 | * @param mixed $value |
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406 | * @param callable $callback |
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407 | * @param mixed $default |
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408 | * |
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409 | * @return mixed |
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410 | */ |
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411 | protected function transform($value, callable $callback, $default = null) |
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417 | |||
418 | /** |
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419 | * Prepare the resource for JSON serialization. |
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420 | * |
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421 | * @return array |
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422 | */ |
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423 | public function jsonSerialize() |
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427 | } |
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428 |