Complex classes like MultiLang 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 MultiLang, and based on these observations, apply Extract Interface, too.
| 1 | <?php |
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| 19 | class MultiLang |
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| 20 | { |
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| 21 | /** |
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| 22 | * Language/Locale. |
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| 23 | * |
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| 24 | * @var string |
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| 25 | */ |
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| 26 | protected $lang; |
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| 27 | |||
| 28 | /** |
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| 29 | * System environment |
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| 30 | * |
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| 31 | * @var string |
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| 32 | */ |
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| 33 | protected $environment; |
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| 34 | |||
| 35 | /** |
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| 36 | * The instance of the cache. |
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| 37 | * |
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| 38 | * @var \Illuminate\Cache\CacheManager |
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| 39 | */ |
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| 40 | protected $cache; |
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| 41 | |||
| 42 | /** |
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| 43 | * Config. |
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| 44 | * |
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| 45 | * @var array |
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| 46 | */ |
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| 47 | protected $config; |
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| 48 | |||
| 49 | /** |
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| 50 | * The instance of the database. |
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| 51 | * |
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| 52 | * @var \Illuminate\Database\DatabaseManager |
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| 53 | */ |
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| 54 | protected $db; |
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| 55 | |||
| 56 | /** |
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| 57 | * Name of the cache. |
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| 58 | * |
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| 59 | * @var string |
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| 60 | */ |
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| 61 | protected $cache_name; |
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| 62 | |||
| 63 | /** |
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| 64 | * Texts collection. |
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| 65 | * |
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| 66 | * @var \Illuminate\Support\Collection |
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| 67 | */ |
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| 68 | protected $texts; |
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| 69 | |||
| 70 | /** |
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| 71 | * Missing texts. |
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| 72 | * |
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| 73 | * @var array |
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| 74 | */ |
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| 75 | protected $new_texts; |
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| 76 | |||
| 77 | /** |
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| 78 | * Create a new MultiLang instance. |
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| 79 | * |
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| 80 | * @param string $environment |
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| 81 | * @param array $config |
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| 82 | * @param \Illuminate\Cache\CacheManager $cache |
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| 83 | * @param \Illuminate\Database\DatabaseManager $db |
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| 84 | */ |
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| 85 | 25 | public function __construct($environment, array $config, Cache $cache, Database $db) |
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| 93 | |||
| 94 | 25 | public function setConfig(array $config) |
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| 95 | { |
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| 96 | 25 | $this->config = $this->getDefaultConfig(); |
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| 97 | |||
| 98 | 25 | foreach ($config as $k => $v) { |
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| 99 | 5 | $this->config[$k] = $v; |
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| 100 | 25 | } |
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| 101 | 25 | } |
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| 102 | |||
| 103 | 25 | public function getDefaultConfig() |
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| 104 | { |
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| 105 | $config = [ |
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| 106 | 'locales' => [ |
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| 107 | 'en' => [ |
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| 108 | 25 | 'name' => 'English', |
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| 109 | 25 | 'native_name' => 'English', |
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| 110 | 25 | 'flag' => 'gb.svg', |
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| 111 | 25 | 'locale' => 'en', |
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| 112 | 25 | ], |
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| 113 | 25 | ], |
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| 114 | 25 | 'default_locale' => 'en', |
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| 115 | 25 | 'autosave' => true, |
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| 116 | 25 | 'cache' => true, |
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| 117 | 25 | 'cache_lifetime' => 1440, |
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| 118 | 25 | 'texts_table' => 'texts', |
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| 119 | 25 | ]; |
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| 120 | 25 | return $config; |
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| 121 | } |
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| 122 | |||
| 123 | 22 | public function getConfig($key = null) |
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| 124 | { |
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| 125 | 22 | if ($key === null) { |
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| 126 | 1 | return $this->config; |
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| 127 | } |
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| 128 | |||
| 129 | 22 | return isset($this->config[$key]) ? $this->config[$key] : null; |
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| 130 | } |
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| 131 | |||
| 132 | /** |
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| 133 | * Set locale and load texts |
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| 134 | * |
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| 135 | * @param string $lang |
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| 136 | * @param string $default_lang |
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| 137 | * @param array $texts |
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| 138 | * @return void |
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| 139 | */ |
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| 140 | 23 | public function setLocale($lang, $texts = null) |
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| 141 | { |
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| 142 | 23 | if (!$lang) { |
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| 143 | 1 | throw new InvalidArgumentException('Locale is empty'); |
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| 144 | } |
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| 145 | 22 | $this->lang = $lang; |
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| 146 | |||
| 147 | 22 | $this->setCacheName($lang); |
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| 148 | |||
| 149 | 22 | if (is_array($texts)) { |
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| 150 | 3 | $texts = new Collection($texts); |
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| 151 | 3 | } else { |
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| 152 | 19 | $texts = $this->loadTexts($this->getLocale()); |
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| 153 | } |
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| 154 | |||
| 155 | 22 | $this->texts = new Collection($texts); |
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| 156 | 22 | } |
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| 157 | |||
| 158 | /** |
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| 159 | * Load texts |
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| 160 | * |
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| 161 | * @param string $lang |
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| 162 | * @return array |
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| 163 | */ |
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| 164 | 19 | public function loadTexts($lang = null) |
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| 165 | { |
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| 166 | 19 | $cache = $this->getConfig('cache'); |
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| 167 | |||
| 168 | 19 | if (!$cache || $this->cache === null || $this->environment != 'production') { |
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| 169 | 16 | $texts = $this->loadTextsFromDatabase($lang); |
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| 170 | 16 | return $texts; |
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| 171 | } |
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| 172 | |||
| 173 | 4 | if ($this->mustLoadFromCache()) { |
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| 174 | $texts = $this->loadTextsFromCache(); |
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| 175 | } else { |
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| 176 | 4 | $texts = $this->loadTextsFromDatabase($lang); |
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| 177 | 4 | $this->storeTextsInCache($texts); |
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| 178 | } |
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| 179 | |||
| 180 | 4 | return $texts; |
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| 181 | } |
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| 182 | |||
| 183 | /** |
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| 184 | * Get translated text |
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| 185 | * |
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| 186 | * @param string $key |
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| 187 | * @return string |
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| 188 | */ |
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| 189 | 8 | public function get($key) |
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| 209 | |||
| 210 | /** |
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| 211 | * Get texts |
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| 212 | * |
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| 213 | * @return array |
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| 214 | */ |
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| 215 | 4 | public function getRedirectUrl(Request $request) |
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| 244 | |||
| 245 | 1 | public function detectLocale(Request $request) |
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| 259 | |||
| 260 | /** |
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| 261 | * Get texts |
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| 262 | * |
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| 263 | * @return array |
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| 264 | */ |
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| 265 | 4 | public function getTexts() |
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| 270 | |||
| 271 | /** |
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| 272 | * Set texts manually |
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| 273 | * |
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| 274 | * @param array $texts_array |
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| 275 | * @return \Longman\LaravelMultiLang\MultiLang |
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| 276 | */ |
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| 277 | 3 | public function setTexts(array $texts_array) |
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| 288 | |||
| 289 | /** |
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| 290 | * Queue missing texts |
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| 291 | * |
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| 292 | * @param string $key |
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| 293 | * @return void |
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| 294 | */ |
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| 295 | 4 | protected function queueToSave($key) |
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| 299 | |||
| 300 | /** |
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| 301 | * Check if we must load texts from cache |
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| 302 | * |
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| 303 | * @return bool |
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| 304 | */ |
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| 305 | 4 | public function mustLoadFromCache() |
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| 309 | |||
| 310 | 4 | protected function storeTextsInCache(array $texts) |
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| 316 | |||
| 317 | 19 | public function loadTextsFromDatabase($lang) |
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| 329 | |||
| 330 | 1 | public function loadTextsFromCache() |
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| 336 | |||
| 337 | 22 | public function setCacheName($lang) |
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| 341 | |||
| 342 | 4 | public function getCacheName() |
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| 346 | |||
| 347 | 2 | public function getUrl($path) |
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| 355 | |||
| 356 | 4 | public function autoSaveIsAllowed() |
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| 363 | |||
| 364 | 20 | public function getLocale() |
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| 368 | |||
| 369 | 3 | public function saveTexts() |
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| 397 | |||
| 398 | 19 | protected function getTableName() |
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| 403 | } |
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| 404 |
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
$italyis not defined by the methodfinale(...).The most likely cause is that the parameter was removed, but the annotation was not.