Complex classes like BlameableTrait 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 BlameableTrait, and based on these observations, apply Extract Interface, too.
1 | <?php |
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49 | trait BlameableTrait |
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50 | { |
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51 | use ConfirmationTrait, |
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52 | SelfBlameableTrait; |
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53 | |||
54 | private $blameableLocalRules = []; |
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55 | private $blameableLocalBehaviors = []; |
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56 | |||
57 | /** |
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58 | * @var boolean|string|array Specify the attribute(s) name of content(s). If |
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59 | * there is only one content attribute, you can assign its name. Or there |
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60 | * is multiple attributes associated with contents, you can assign their |
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61 | * names in array. If you don't want to use this feature, please assign |
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62 | * false. |
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63 | * For example: |
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64 | * ```php |
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65 | * public $contentAttribute = 'comment'; // only one field named as 'comment'. |
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66 | * ``` |
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67 | * or |
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68 | * ```php |
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69 | * public $contentAttribute = ['year', 'month', 'day']; // multiple fields. |
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70 | * ``` |
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71 | * or |
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72 | * ```php |
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73 | * public $contentAttribute = false; // no need of this feature. |
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74 | * ``` |
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75 | * If you don't need this feature, you should add rules corresponding with |
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76 | * `content` in `rules()` method of your user model by yourself. |
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77 | */ |
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78 | public $contentAttribute = 'content'; |
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79 | |||
80 | /** |
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81 | * @var array built-in validator name or validatation method name and |
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82 | * additional parameters. |
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83 | */ |
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84 | public $contentAttributeRule = ['string', 'max' => 255]; |
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85 | |||
86 | /** |
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87 | * @var boolean|string Specify the field which stores the type of content. |
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88 | */ |
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89 | public $contentTypeAttribute = false; |
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90 | |||
91 | /** |
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92 | * @var boolean|array Specify the logic type of content, not data type. If |
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93 | * your content doesn't need this feature. please specify false. If the |
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94 | * $contentAttribute is specified to false, this attribute will be skipped. |
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95 | * ```php |
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96 | * public $contentTypes = [ |
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97 | * 'public', |
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98 | * 'private', |
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99 | * 'friend', |
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100 | * ]; |
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101 | * ``` |
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102 | */ |
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103 | public $contentTypes = false; |
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104 | |||
105 | /** |
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106 | * @var boolean|string This attribute speicfy the name of description |
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107 | * attribute. If this attribute is assigned to false, this feature will be |
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108 | * skipped. |
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109 | */ |
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110 | public $descriptionAttribute = false; |
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111 | |||
112 | /** |
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113 | * @var string |
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114 | */ |
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115 | public $initDescription = ''; |
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116 | |||
117 | /** |
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118 | * @var string the attribute that will receive current user ID value. This |
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119 | * attribute must be assigned. |
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120 | */ |
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121 | public $createdByAttribute = "user_guid"; |
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122 | |||
123 | /** |
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124 | * @var string the attribute that will receive current user ID value. |
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125 | * Set this property to false if you do not want to record the updater ID. |
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126 | */ |
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127 | public $updatedByAttribute = "user_guid"; |
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128 | |||
129 | /** |
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130 | * @var boolean Add combinated unique rule if assigned to true. |
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131 | */ |
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132 | public $idCreatorCombinatedUnique = true; |
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133 | |||
134 | /** |
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135 | * @var boolean|string The name of user class which own the current entity. |
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136 | * If this attribute is assigned to false, this feature will be skipped, and |
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137 | * when you use create() method of UserTrait, it will be assigned with |
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138 | * current user class. |
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139 | */ |
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140 | //public $userClass; |
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141 | |||
142 | /** |
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143 | * @var boolean|string Host class. |
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144 | */ |
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145 | public $hostClass; |
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146 | public static $cacheKeyBlameableRules = 'blameable_rules'; |
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147 | public static $cacheTagBlameableRules = 'tag_blameable_rules'; |
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148 | public static $cacheKeyBlameableBehaviors = 'blameable_behaviors'; |
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149 | public static $cacheTagBlameableBehaviors = 'tag_blameable_behaviors'; |
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150 | |||
151 | /** |
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152 | * @inheritdoc |
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153 | * ------------ |
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154 | * The classical rules is like following: |
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155 | * [ |
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156 | * ['guid', 'required'], |
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157 | * ['guid', 'unique'], |
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158 | * ['guid', 'string', 'max' => 36], |
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159 | * |
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160 | * ['id', 'required'], |
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161 | * ['id', 'unique'], |
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162 | * ['id', 'string', 'max' => 4], |
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163 | * |
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164 | * ['created_at', 'safe'], |
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165 | * ['updated_at', 'safe'], |
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166 | * |
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167 | * ['ip_type', 'in', 'range' => [4, 6]], |
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168 | * ['ip', 'number', 'integerOnly' => true, 'min' => 0], |
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169 | * ] |
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170 | * @return array |
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171 | */ |
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172 | 177 | public function rules() |
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176 | |||
177 | /** |
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178 | * @inheritdoc |
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179 | */ |
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180 | 184 | public function behaviors() |
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184 | |||
185 | /** |
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186 | * Get total of contents which owned by their owner. |
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187 | * @return integer |
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188 | */ |
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189 | 1 | public function countOfOwner() |
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194 | |||
195 | /** |
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196 | * Get content. |
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197 | * @return mixed |
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198 | */ |
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199 | 6 | public function getContent() |
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214 | |||
215 | /** |
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216 | * Set content. |
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217 | * @param mixed $content |
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218 | */ |
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219 | 60 | public function setContent($content) |
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233 | |||
234 | /** |
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235 | * Determines whether content could be edited. Your should implement this |
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236 | * method by yourself. |
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237 | * @return boolean |
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238 | * @throws NotSupportedException |
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239 | */ |
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240 | public function getContentCanBeEdited() |
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247 | |||
248 | /** |
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249 | * Get blameable rules cache key. |
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250 | * @return string cache key. |
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251 | */ |
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252 | 177 | public function getBlameableRulesCacheKey() |
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256 | |||
257 | /** |
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258 | * Get blameable rules cache tag. |
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259 | * @return string cache tag |
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260 | */ |
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261 | 168 | public function getBlameableRulesCacheTag() |
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265 | |||
266 | /** |
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267 | * Get the rules associated with content to be blamed. |
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268 | * @return array rules. |
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269 | */ |
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270 | 177 | public function getBlameableRules() |
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296 | |||
297 | /** |
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298 | * Get the rules associated with `createdByAttribute`, `updatedByAttribute` |
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299 | * and `idAttribute`-`createdByAttribute` combination unique. |
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300 | * @return array rules. |
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301 | */ |
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302 | 168 | public function getBlameableAttributeRules() |
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332 | |||
333 | /** |
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334 | * Get the rules associated with `description` attribute. |
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335 | * @return array rules. |
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336 | */ |
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337 | 168 | public function getDescriptionRules() |
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353 | |||
354 | /** |
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355 | * Get the rules associated with `content` and `contentType` attributes. |
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356 | * @return array rules. |
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357 | */ |
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358 | 168 | public function getContentRules() |
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389 | |||
390 | /** |
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391 | * Set blameable rules. |
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392 | * @param array $rules |
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393 | */ |
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394 | 168 | protected function setBlameableRules($rules = []) |
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403 | |||
404 | /** |
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405 | * Get blameable behaviors cache key. |
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406 | * @return string cache key. |
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407 | */ |
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408 | 184 | public function getBlameableBehaviorsCacheKey() |
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412 | |||
413 | /** |
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414 | * Get blameable behaviors cache tag. |
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415 | * @return string cache tag. |
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416 | */ |
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417 | 173 | public function getBlameableBehaviorsCacheTag() |
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421 | |||
422 | /** |
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423 | * Get blameable behaviors. If current behaviors array is empty, the init |
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424 | * array will be given. |
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425 | * @return array |
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426 | */ |
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427 | 184 | public function getBlameableBehaviors() |
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449 | |||
450 | /** |
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451 | * Set blameable behaviors. |
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452 | * @param array $behaviors |
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453 | */ |
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454 | 173 | protected function setBlameableBehaviors($behaviors = []) |
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464 | |||
465 | /** |
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466 | * Set description. |
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467 | * @return string description. |
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468 | */ |
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469 | 1 | public function getDescription() |
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474 | |||
475 | /** |
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476 | * Get description. |
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477 | * @param string $desc description. |
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478 | * @return string|null description if enabled, or null if disabled. |
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479 | */ |
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480 | 1 | public function setDescription($desc) |
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485 | |||
486 | /** |
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487 | * Get blame who owned this blameable model. |
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488 | * NOTICE! This method will not check whether `$hostClass` exists. You should |
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489 | * specify it in `init()` method. |
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490 | * @return BaseUserQuery user. |
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491 | */ |
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492 | 17 | public function getUser() |
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496 | |||
497 | /** |
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498 | * Declares a `has-one` relation. |
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499 | * The declaration is returned in terms of a relational [[\yii\db\ActiveQuery]] instance |
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500 | * through which the related record can be queried and retrieved back. |
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501 | * |
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502 | * A `has-one` relation means that there is at most one related record matching |
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503 | * the criteria set by this relation, e.g., a customer has one country. |
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504 | * |
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505 | * For example, to declare the `country` relation for `Customer` class, we can write |
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506 | * the following code in the `Customer` class: |
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507 | * |
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508 | * ```php |
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509 | * public function getCountry() |
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510 | * { |
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511 | * return $this->hasOne(Country::className(), ['id' => 'country_id']); |
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512 | * } |
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513 | * ``` |
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514 | * |
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515 | * Note that in the above, the 'id' key in the `$link` parameter refers to an attribute name |
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516 | * in the related class `Country`, while the 'country_id' value refers to an attribute name |
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517 | * in the current AR class. |
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518 | * |
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519 | * Call methods declared in [[\yii\db\ActiveQuery]] to further customize the relation. |
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520 | * |
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521 | * This method is provided by [[\yii\db\BaseActiveRecord]]. |
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522 | * @param string $class the class name of the related record |
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523 | * @param array $link the primary-foreign key constraint. The keys of the array refer to |
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524 | * the attributes of the record associated with the `$class` model, while the values of the |
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525 | * array refer to the corresponding attributes in **this** AR class. |
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526 | * @return \yii\dbActiveQueryInterface the relational query object. |
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527 | */ |
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528 | public abstract function hasOne($class, $link); |
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529 | |||
530 | /** |
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531 | * Get host of this model. |
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532 | * @return BaseUserQuery |
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533 | */ |
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534 | 32 | public function getHost() |
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540 | |||
541 | /** |
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542 | * Set host of this model. |
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543 | * @param string $host |
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544 | * @return type |
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545 | */ |
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546 | 139 | public function setHost($host) |
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559 | |||
560 | /** |
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561 | * |
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562 | * @param BaseUserModel|string $user |
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563 | * @return boolean |
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564 | */ |
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565 | 4 | public function setUser($user) |
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569 | |||
570 | /** |
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571 | * Get updater who updated this blameable model recently. |
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572 | * NOTICE! This method will not check whether `$hostClass` exists. You should |
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573 | * specify it in `init()` method. |
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574 | * @return BaseUserQuery user. |
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575 | */ |
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576 | 6 | public function getUpdater() |
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586 | |||
587 | /** |
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588 | * |
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589 | * @param BaseUserModel|string $user |
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590 | * @return boolean |
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591 | */ |
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592 | 5 | public function setUpdater($updater) |
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608 | |||
609 | /** |
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610 | * This event is triggered before the model update. |
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611 | * This method is ONLY used for being triggered by event. DO NOT call, |
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612 | * override or modify it directly, unless you know the consequences. |
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613 | * @param ModelEvent $event |
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614 | */ |
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615 | 54 | public function onContentChanged($event) |
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621 | |||
622 | /** |
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623 | * Return the current user's GUID if current model doesn't specify the owner |
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624 | * yet, or return the owner's GUID if current model has been specified. |
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625 | * This method is ONLY used for being triggered by event. DO NOT call, |
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626 | * override or modify it directly, unless you know the consequences. |
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627 | * @param ModelEvent $event |
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628 | * @return string the GUID of current user or the owner. |
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629 | */ |
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630 | 133 | public function onGetCurrentUserGuid($event) |
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643 | |||
644 | /** |
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645 | * Initialize type of content. the first of element[index is 0] of |
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646 | * $contentTypes will be used. |
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647 | * @param ModelEvent $event |
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648 | */ |
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649 | 20 | public function onInitContentType($event) |
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663 | |||
664 | /** |
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665 | * Initialize description property with $initDescription. |
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666 | * @param ModelEvent $event |
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667 | */ |
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668 | 66 | public function onInitDescription($event) |
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680 | |||
681 | /** |
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682 | * Attaches an event handler to an event. |
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683 | * |
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684 | * The event handler must be a valid PHP callback. The following are |
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685 | * some examples: |
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686 | * |
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687 | * ``` |
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688 | * function ($event) { ... } // anonymous function |
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689 | * [$object, 'handleClick'] // $object->handleClick() |
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690 | * ['Page', 'handleClick'] // Page::handleClick() |
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691 | * 'handleClick' // global function handleClick() |
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692 | * ``` |
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693 | * |
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694 | * The event handler must be defined with the following signature, |
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695 | * |
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696 | * ``` |
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697 | * function ($event) |
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698 | * ``` |
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699 | * |
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700 | * where `$event` is an [[Event]] object which includes parameters associated with the event. |
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701 | * |
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702 | * This method is provided by [[\yii\base\Component]]. |
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703 | * @param string $name the event name |
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704 | * @param callable $handler the event handler |
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705 | * @param mixed $data the data to be passed to the event handler when the event is triggered. |
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706 | * When the event handler is invoked, this data can be accessed via [[Event::data]]. |
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707 | * @param boolean $append whether to append new event handler to the end of the existing |
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708 | * handler list. If false, the new handler will be inserted at the beginning of the existing |
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709 | * handler list. |
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710 | * @see off() |
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711 | */ |
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712 | public abstract function on($name, $handler, $data = null, $append = true); |
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713 | |||
714 | /** |
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715 | * Detaches an existing event handler from this component. |
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716 | * This method is the opposite of [[on()]]. |
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717 | * This method is provided by [[\yii\base\Component]] |
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718 | * @param string $name event name |
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719 | * @param callable $handler the event handler to be removed. |
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720 | * If it is null, all handlers attached to the named event will be removed. |
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721 | * @return boolean if a handler is found and detached |
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722 | * @see on() |
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723 | */ |
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724 | public abstract function off($name, $handler = null); |
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725 | |||
726 | /** |
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727 | * Attach events associated with blameable model. |
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728 | */ |
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729 | 184 | public function initBlameableEvents() |
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744 | |||
745 | /** |
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746 | * @inheritdoc |
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747 | */ |
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748 | 71 | public function enabledFields() |
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775 | |||
776 | /** |
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777 | * Find all follows by specified identity. If `$identity` is null, the logged-in |
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778 | * identity will be taken. |
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779 | * @param string|integer $pageSize If it is 'all`, then will find all follows, |
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780 | * the `$currentPage` parameter will be skipped. If it is integer, it will be |
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781 | * regarded as sum of models in one page. |
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782 | * @param integer $currentPage The current page number, begun with 0. |
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783 | * @param {$this->hostClass} $identity |
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784 | * @return static[] If no follows, null will be given, or return follow array. |
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785 | */ |
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786 | 1 | public static function findAllByIdentityInBatch($pageSize = 'all', $currentPage = 0, $identity = null) |
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793 | |||
794 | /** |
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795 | * Find one follow by specified identity. If `$identity` is null, the logged-in |
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796 | * identity will be taken. If $identity doesn't has the follower, null will |
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797 | * be given. |
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798 | * @param integer $id user id. |
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799 | * @param boolean $throwException |
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800 | * @param {$this->hostClass} $identity |
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801 | * @return static |
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802 | * @throws InvalidParamException |
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803 | */ |
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804 | 1 | public static function findOneById($id, $throwException = true, $identity = null) |
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816 | |||
817 | /** |
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818 | * Get total of follows of specified identity. |
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819 | * @param {$this->hostClass} $identity |
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820 | * @return integer total. |
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821 | */ |
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822 | 2 | public static function countByIdentity($identity = null) |
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826 | |||
827 | /** |
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828 | * Get pagination, used for building contents page by page. |
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829 | * @param integer $limit |
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830 | * @param {$this->hostClass} $identity |
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831 | * @return Pagination |
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832 | */ |
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833 | 1 | public static function getPagination($limit = 10, $identity = null) |
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842 | } |
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843 |
In PHP it is possible to write to properties without declaring them. For example, the following is perfectly valid PHP code:
Generally, it is a good practice to explictly declare properties to avoid accidental typos and provide IDE auto-completion: