Complex classes like Kohana_Jam_Validated 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 Kohana_Jam_Validated, and based on these observations, apply Extract Interface, too.
1 | <?php defined('SYSPATH') OR die('No direct script access.'); |
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14 | abstract class Kohana_Jam_Validated extends Model implements Serializable { |
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15 | |||
16 | /** |
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17 | * @var array The original data set on the object |
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18 | */ |
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19 | protected $_original = array(); |
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20 | |||
21 | /** |
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22 | * @var array Data that's changed since the object was loaded |
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23 | */ |
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24 | protected $_changed = array(); |
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25 | |||
26 | /** |
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27 | * @var array Data that's already been retrieved is cached |
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28 | */ |
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29 | protected $_retrieved = array(); |
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30 | |||
31 | /** |
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32 | * @var array Unmapped data that is still accessible |
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33 | */ |
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34 | protected $_unmapped = array(); |
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35 | |||
36 | /** |
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37 | * @var boolean Whether or not the model is validating |
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38 | */ |
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39 | protected $_is_validating = FALSE; |
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40 | |||
41 | /** |
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42 | * @var Jam_Meta A copy of this object's meta object |
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43 | */ |
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44 | protected $_meta = NULL; |
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45 | |||
46 | /** |
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47 | * @var Boolean A flag that keeps track of whether or not the model is valid |
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48 | */ |
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49 | protected $_errors = NULL; |
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50 | |||
51 | /** |
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52 | * Constructor. |
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53 | * |
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54 | * A key can be passed to automatically load a model by its |
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55 | * unique key. |
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56 | * |
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57 | * @param mixed|null $key |
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58 | */ |
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59 | 441 | public function __construct($meta_name = NULL) |
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71 | |||
72 | /** |
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73 | * Gets the value of a field. |
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74 | * |
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75 | * Unlike Jam_Model::get(), values that are returned are cached |
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76 | * until they are changed and relationships are automatically select()ed. |
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77 | * |
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78 | * @see get() |
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79 | * @param string $name The name or alias of the field you're retrieving |
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80 | * @return mixed |
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81 | */ |
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82 | 146 | public function &__get($name) |
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91 | |||
92 | /** |
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93 | * Sets the value of a field. |
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94 | * |
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95 | * @see set() |
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96 | * @param string $name The name of the field you're setting |
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97 | * @param mixed $value The value you're setting |
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98 | * @return void |
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99 | */ |
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100 | 76 | public function __set($name, $value) |
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111 | |||
112 | /** |
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113 | * Passes unknown methods along to the behaviors. |
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114 | * |
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115 | * @param string $method |
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116 | * @param array $args |
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117 | * @return mixed |
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118 | **/ |
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119 | 34 | public function __call($method, $args) |
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123 | |||
124 | /** |
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125 | * Returns true if $name is a field of the model or an unmapped column. |
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126 | * |
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127 | * This does not conform to the standard of returning FALSE if the |
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128 | * property is set but the value is NULL. Rather this acts more like |
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129 | * property_exists. |
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130 | * |
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131 | * @param string $name |
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132 | * @return boolean |
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133 | */ |
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134 | public function __isset($name) |
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138 | |||
139 | /** |
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140 | * This doesn't unset fields. Rather, it sets them to their original |
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141 | * value. Unmapped, changed, and retrieved values are unset. |
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142 | * |
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143 | * In essence, unsetting a field sets it as if you never made any changes |
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144 | * to it, and clears the cache if the value has been retrieved with those changes. |
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145 | * |
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146 | * @param string $name |
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147 | * @return void |
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148 | */ |
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149 | public function __unset($name) |
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157 | |||
158 | /** |
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159 | * Returns a string representation of the model in the |
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160 | * form of `Model_Name (id)` or `Model_Name (NULL)` if |
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161 | * the model is not loaded. |
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162 | * |
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163 | * This is designed to be useful for debugging. |
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164 | * |
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165 | * @return string |
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166 | */ |
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167 | public function __toString() |
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171 | |||
172 | /** |
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173 | * Gets the value for a field. |
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174 | * |
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175 | * @param string $name The field's name |
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176 | * @return array|mixed |
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177 | */ |
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178 | 215 | public function get($name) |
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200 | |||
201 | /** |
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202 | * Returns the original value of a field, before it was changed. |
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203 | * |
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204 | * This method—combined with get(), which first searches for changed |
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205 | * values—is useful for comparing changes that occurred on a model. |
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206 | * |
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207 | * @param string $field The field's or alias name |
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208 | * @return mixed |
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209 | */ |
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210 | 207 | public function original($field_name = NULL) |
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220 | |||
221 | /** |
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222 | * Returns an array of values in the fields. |
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223 | * |
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224 | * You can pass an array of field names to retrieve |
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225 | * only the values for those fields: |
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226 | * |
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227 | * $model->as_array(array('id', 'name', 'status')); |
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228 | * |
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229 | * @param array $fields |
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230 | * @return array |
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231 | */ |
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232 | 10 | public function as_array(array $fields = NULL) |
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244 | |||
245 | /** |
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246 | * Set preloaded values, without changing the save, loaded and changed flags |
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247 | * @param array|string $values |
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248 | * @param mixed $value |
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249 | * @return $this |
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250 | */ |
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251 | 12 | public function retrieved($values, $value = NULL) |
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263 | /** |
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264 | * Sets the value of a field. |
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265 | * |
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266 | * You can pass an array of key => value pairs |
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267 | * to set multiple fields at the same time: |
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268 | * |
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269 | * $model->set(array( |
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270 | * 'field1' => 'value', |
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271 | * 'field2' => 'value', |
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272 | * .... |
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273 | * )); |
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274 | * |
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275 | * @param array|string $values |
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276 | * @param mixed|null $value |
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277 | * @return $this |
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278 | */ |
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279 | 93 | public function set($values, $value = NULL) |
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280 | { |
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281 | // Accept set('name', 'value'); |
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282 | 93 | if ( ! is_array($values)) |
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283 | { |
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284 | $values = array($values => $value); |
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285 | } |
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286 | |||
287 | 93 | foreach ($values as $key => & $value) |
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288 | { |
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289 | 91 | if ($field = $this->meta()->field($key)) |
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290 | { |
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291 | 78 | $converted_field_value = $field->set($this, $value, TRUE); |
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292 | 78 | if ($converted_field_value !== $this->{$field->name}) |
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293 | { |
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294 | 56 | $this->_changed[$field->name] = $converted_field_value; |
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295 | |||
296 | 56 | if (array_key_exists($field->name, $this->_retrieved)) |
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297 | { |
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298 | 78 | unset($this->_retrieved[$field->name]); |
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299 | } |
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300 | } |
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301 | } |
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302 | 34 | elseif (property_exists($this, $key)) |
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303 | { |
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304 | 1 | $this->$key = $value; |
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305 | } |
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306 | else |
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307 | { |
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308 | 34 | unset($this->_retrieved[$key]); |
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309 | 91 | $this->_unmapped[$key] = $value; |
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310 | } |
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311 | } |
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312 | |||
313 | 93 | return $this; |
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314 | } |
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315 | |||
316 | 19 | public function is_valid() |
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317 | { |
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318 | 19 | return count($this->errors()) == 0; |
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319 | } |
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320 | |||
321 | /** |
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322 | * Validates the current model's data |
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323 | * |
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324 | * @throws Jam_Exception_Validation |
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325 | * @param Validation|null $extra_validation |
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326 | * @return bool |
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327 | */ |
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328 | 19 | public function check($force = FALSE) |
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329 | { |
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330 | 19 | $this->_is_validating = TRUE; |
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331 | // Run validation only when new or changed |
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332 | 19 | if ($this->changed() OR $force) |
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333 | { |
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334 | // Reset the errors before checking |
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335 | 19 | $this->_errors = FALSE; |
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336 | |||
337 | 19 | $this->meta()->events()->trigger('model.before_check', $this, array($this->_changed)); |
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338 | |||
339 | 19 | $this->meta()->execute_validators($this, $force); |
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340 | |||
341 | 19 | $this->meta()->events()->trigger('model.after_check', $this, array($this->_changed)); |
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342 | } |
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343 | |||
344 | 19 | $this->_is_validating = FALSE; |
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345 | |||
346 | 19 | return $this->is_valid(); |
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347 | } |
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348 | |||
349 | /** |
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350 | * @return $this |
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351 | * @throws Jam_Exception_Validation |
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352 | * |
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353 | * @deprecated Since 0.5.24 Use try-catch around save() instead. This might be removed in future version. |
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354 | */ |
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355 | 1 | public function check_insist() |
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356 | { |
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357 | 1 | @trigger_error('check_insist() is deprecated and might be removed in future version.', E_USER_DEPRECATED); |
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358 | |||
359 | 1 | if ( ! $this->check()) |
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360 | 1 | throw new Jam_Exception_Validation('There was an error validating the :model: :errors', $this); |
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361 | |||
362 | return $this; |
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363 | } |
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364 | |||
365 | /** |
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366 | * Override this function to add custom validation after the validators. |
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367 | * Having an empty validate function allow safely calling parent::validate() |
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368 | * when extending models. |
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369 | * |
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370 | * You need to set errors with: |
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371 | * $this->errors()->add('field', 'error_name'); |
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372 | * |
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373 | * @link http://git.io/5I47Tw docs |
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374 | */ |
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375 | public function validate() {} |
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376 | |||
377 | /** |
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378 | * Get the errors from the previous check, if you provide a name, will return the errors only for that name |
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379 | * Automatically loads the error messages file from messages/jam-validation/<model_name> |
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380 | * If there are no errors yet - return NULL |
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381 | * |
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382 | * @param string $name the name of the field to get errors of |
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383 | * @return Jam_Errors|string[]|NULL |
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384 | */ |
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385 | 202 | public function errors($name = NULL) |
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386 | { |
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387 | 202 | if ( ! $this->_errors) |
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388 | { |
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389 | 202 | $this->_errors = new Jam_Errors($this, $this->meta()->errors_filename()); |
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390 | } |
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391 | |||
392 | 202 | if ($name !== NULL) |
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393 | 1 | return $this->_errors->messages($name); |
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394 | |||
395 | 201 | return $this->_errors; |
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396 | } |
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397 | |||
398 | /** |
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399 | * Removes any changes made to a model. |
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400 | * |
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401 | * This method only works on loaded models. |
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402 | * |
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403 | * @return $this |
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404 | */ |
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405 | public function revert() |
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414 | |||
415 | /** |
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416 | * Sets a model to its original state, as if freshly instantiated |
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417 | * |
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418 | * @return $this |
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419 | */ |
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420 | 196 | public function clear() |
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432 | |||
433 | /** |
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434 | * Whether or not the model is in the process of being validated |
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435 | * |
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436 | * @return boolean |
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437 | */ |
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438 | 7 | public function is_validating() |
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442 | |||
443 | /** |
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444 | * Returns whether or not the particular $field has changed. |
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445 | * |
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446 | * If $field is NULL, the method returns whether or not any |
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447 | * data whatsoever was changed on the model. |
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448 | * |
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449 | * @param string $field |
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450 | * @return boolean |
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451 | */ |
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452 | 58 | public function changed($name = NULL) |
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463 | |||
464 | /** |
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465 | * Returns the value of the model's primary key |
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466 | * |
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467 | * @return mixed |
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468 | */ |
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469 | 146 | public function id() |
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473 | |||
474 | /** |
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475 | * Returns the value of the model's name key |
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476 | * |
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477 | * @return string |
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478 | */ |
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479 | 17 | public function name() |
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483 | |||
484 | /** |
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485 | * Returns the model's meta object |
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486 | * |
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487 | * @return Jam_Meta |
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488 | */ |
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489 | 754 | public function meta() |
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490 | { |
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491 | 754 | if ( ! $this->_meta) |
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492 | throw new Kohana_Exception('Model for class :class does not have a meta', array(':class' => get_class($this))); |
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493 | |||
494 | 754 | return $this->_meta; |
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495 | } |
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496 | |||
497 | 26 | public function unmapped($name) |
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501 | |||
502 | |||
503 | public function serialize() |
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504 | { |
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505 | return serialize(array( |
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506 | 'original' => $this->_original, |
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507 | 'changed' => $this->_changed, |
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508 | 'unmapped' => $this->_unmapped, |
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509 | )); |
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510 | } |
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511 | |||
512 | public function unserialize($data) |
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520 | } |
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521 |
This check looks for PHPDoc comments describing methods or function parameters that do not exist on the corresponding method or function.
Consider the following example. The parameter
$italy
is not defined by the methodfinale(...)
.The most likely cause is that the parameter was removed, but the annotation was not.