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<?php |
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/** |
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* @author Nikola Kostadinov<[email protected]> |
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* Date: 19.10.2014 |
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* Time: 10:46 ч. |
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*/ |
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namespace nkostadinov\taxonomy; |
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use nkostadinov\taxonomy\components\exceptions\TermNotDefinedException; |
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use nkostadinov\taxonomy\components\terms\BaseTerm; |
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use nkostadinov\taxonomy\components\terms\PropertyTerm; |
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use nkostadinov\taxonomy\components\terms\TagTerm; |
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use nkostadinov\taxonomy\models\TaxonomyDef; |
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use nkostadinov\taxonomy\models\TaxonomyTerms; |
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use yii\base\Component; |
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use yii\base\InvalidConfigException; |
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use yii\db\Connection; |
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use yii\db\Migration; |
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use yii\db\Schema; |
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use yii\log\Logger; |
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class Taxonomy extends Component |
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{ |
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/* @var Connection The db connection component */ |
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public $db = 'db'; |
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public $table = 'taxonomy'; |
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//cache array of initialized terms |
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private $_taxonomy = []; |
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// |
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public $definitions = []; |
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public function isTermInstalled($termName) |
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{ |
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$term = $this->getTerm($termName); |
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return $term->isInstalled(); |
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} |
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public function addTerm($term, $object_id, $params) |
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{ |
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$term = $this->getTerm($term); |
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$term->addTerm($object_id, $params); |
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} |
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public function removeTerm($term, $object_id, $params = []) |
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{ |
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$term = $this->getTerm($term); |
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return $term->removeTerm($object_id, $params); |
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} |
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public function getTerms($term, $object_id, $name = null) |
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{ |
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$term = $this->getTerm($term); |
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return $term->getTerms($object_id, $name); |
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} |
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/** |
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* @param $termName |
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* @return BaseTerm |
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* @throws InvalidConfigException |
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* @throws TermNotDefinedException |
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*/ |
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public function getTerm($termName, $reload = false) |
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{ |
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if(!isset($this->_taxonomy[$termName]) or $reload) { |
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$tax = TaxonomyDef::findOne(['name' => $termName]); |
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\Yii::getLogger()->log("Initialising term $termName", Logger::LEVEL_INFO, 'nkostadinov.taxonomy.terms'); |
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$this->_taxonomy[$termName] = \Yii::createObject($tax->attributes); |
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} |
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return $this->_taxonomy[$termName]; |
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} |
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public function isInstalled() |
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{ |
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return \Yii::$app->db->getTableSchema(TaxonomyDef::tableName(), true) !== null; |
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} |
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/** |
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* @return array |
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*/ |
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public function getDefinitions() |
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{ |
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return array_merge( |
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[TagTerm::className(), PropertyTerm::className()], |
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$this->definitions |
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); |
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} |
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} |
nkostadinov /
yii2-taxonomy
PHP has two types of connecting operators (logical operators, and boolean operators):
and&&or||The difference between these is the order in which they are executed. In most cases, you would want to use a boolean operator like
&&, or||.Let’s take a look at a few examples:
Logical Operators are used for Control-Flow
One case where you explicitly want to use logical operators is for control-flow such as this:
Since
dieintroduces problems of its own, f.e. it makes our code hardly testable, and prevents any kind of more sophisticated error handling; you probably do not want to use this in real-world code. Unfortunately, logical operators cannot be combined withthrowat this point:These limitations lead to logical operators rarely being of use in current PHP code.