/**
* Get an attribute from the model.
*
* @param string $key
* @return mixed
*/publicfunctiongetAttribute($key){if(!$key){return;}// If the attribute exists in the attribute array or has a "get" mutator we will// get the attribute's value. Otherwise, we will proceed as if the developers// are asking for a relationship's value. This covers both types of values.if(array_key_exists($key,$this->attributes)||$this->hasGetMutator($key)){return$this->getAttributeValue($key);}// Here we will determine if the model base class itself contains this given key// since we don't want to treat any of those methods as relationships because// they are all intended as helper methods and none of these are relations.if(method_exists(self::class,$key)){return;}return$this->getRelationValue($key);}
/**
* Get a relationship.
*
* @param string $key
* @return mixed
*/publicfunctiongetRelationValue($key){// If the key already exists in the relationships array, it just means the// relationship has already been loaded, so we'll just return it out of// here because there is no need to query within the relations twice.if($this->relationLoaded($key)){return$this->relations[$key];}// If the "attribute" exists as a method on the model, we will just assume// it is a relationship and will load and return results from the query// and hydrate the relationship's value on the "relationships" array.if(method_exists($this,$key)){return$this->getRelationshipFromMethod($key);}}
/**
* Get a relationship value from a method.
*
* @param string $method
* @return mixed
*
* @throws \LogicException
*/protectedfunctiongetRelationshipFromMethod($method){$relation=$this->$method();if(!$relationinstanceofRelation){thrownewLogicException(sprintf('%s::%s must return a relationship instance.',static::class,$method));}returntap($relation->getResults(),function($results)use($method){$this->setRelation($method,$results);});}
