Complex classes like Request 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 Request, and based on these observations, apply Extract Interface, too.
1 | <?php |
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9 | class Request |
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10 | { |
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11 | /** |
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12 | * Reference to instantiated controller object. |
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13 | * |
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14 | * @var object |
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15 | */ |
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16 | protected static $instance; |
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17 | |||
18 | /** |
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19 | * System configuration |
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20 | * |
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21 | * @var object |
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22 | */ |
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23 | private $configuration; |
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24 | |||
25 | |||
26 | /** |
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27 | * normalized $_GET superglobal |
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28 | * |
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29 | * @var array |
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30 | * @access private |
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31 | */ |
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32 | |||
33 | private $getContainer = []; |
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34 | |||
35 | /** |
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36 | * normalized $_POST superglobal |
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37 | * |
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38 | * @var array |
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39 | * @access private |
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40 | */ |
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41 | |||
42 | private $postContainer = []; |
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43 | |||
44 | /** |
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45 | * normalized $_DELETE superglobal |
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46 | * |
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47 | * @var array |
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48 | * @access private |
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49 | */ |
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50 | |||
51 | private $deleteContainer = []; |
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52 | |||
53 | /** |
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54 | * normalized $_PUT superglobal |
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55 | * |
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56 | * @var array |
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57 | * @access private |
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58 | */ |
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59 | |||
60 | private $putContainer = []; |
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61 | |||
62 | /** |
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63 | * normalized $_SESSION superglobal |
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64 | * |
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65 | * @var array |
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66 | * @access private |
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67 | */ |
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68 | |||
69 | private $sessionContainer = []; |
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70 | |||
71 | /** |
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72 | * normalized $_COOKIE superglobal |
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73 | * |
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74 | * @var array |
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75 | * @access private |
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76 | */ |
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77 | |||
78 | private $cookieContainer = []; |
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79 | |||
80 | /** |
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81 | * normalized $_FILES superglobal |
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82 | * |
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83 | * @var array |
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84 | * @access private |
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85 | */ |
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86 | |||
87 | private $filesContainer = []; |
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88 | |||
89 | /** |
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90 | * normalized $_SERVER superglobal |
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91 | * |
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92 | * @var array |
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93 | * @access private |
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94 | */ |
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95 | |||
96 | private $serverContainer = []; |
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97 | |||
98 | |||
99 | /** |
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100 | * Flashdata container |
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101 | * |
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102 | * @var array |
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103 | * @access private |
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104 | */ |
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105 | |||
106 | private $flashdata = []; |
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107 | |||
108 | /** |
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109 | * Flashdata identifier |
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110 | * |
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111 | * @var string |
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112 | * @access private |
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113 | * @TODO: move flashdata to sessionhandler, make available here with other request vars still |
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114 | */ |
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115 | |||
116 | |||
117 | private $flashdataId = '_z_session_flashdata'; |
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118 | |||
119 | |||
120 | /** |
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121 | * Normalizes superglobals, handles flashdata |
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122 | */ |
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123 | |||
124 | 18 | public function __construct() |
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157 | |||
158 | /** |
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159 | * Processes current requests flashdata, recycles old. |
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160 | * |
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161 | * @access private |
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162 | */ |
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163 | 18 | private function registerFlashdata() |
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195 | |||
196 | /** |
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197 | * Sets flashdata |
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198 | * |
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199 | * @access public |
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200 | * |
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201 | * @params string $name |
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202 | * @params mixed $value |
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203 | */ |
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204 | |||
205 | public function setFlashdata($name, $value) |
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219 | |||
220 | /** |
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221 | * Gets flashdata |
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222 | * |
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223 | * @access public |
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224 | * |
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225 | * @params string $name |
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226 | */ |
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227 | |||
228 | public function getFlashdata($name = false, $default = false) |
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241 | |||
242 | /** |
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243 | * Remove session data |
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244 | * |
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245 | * @access public |
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246 | * |
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247 | * @params string $index |
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248 | */ |
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249 | public function removeSession($index) |
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255 | |||
256 | /** |
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257 | * Set session data |
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258 | * |
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259 | * @access public |
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260 | * |
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261 | * @params string $index |
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262 | * @params mixed $value |
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263 | */ |
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264 | |||
265 | public function setSession($index = false, $value = false) |
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282 | |||
283 | /** |
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284 | * Dumps all session data |
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285 | * |
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286 | * @access public |
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287 | */ |
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288 | public function destroySession() |
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308 | |||
309 | /** |
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310 | * Normalizes data |
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311 | * |
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312 | * @access public |
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313 | * @TODO: expand functionality, set/perform based on configuration |
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314 | */ |
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315 | 18 | public function normalize($data) |
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362 | |||
363 | public function __call($name, $arguments) |
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392 | } |
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393 |
Instead of super-globals, we recommend to explicitly inject the dependencies of your class. This makes your code less dependent on global state and it becomes generally more testable: