/**
* This constructor initializes the class.
*
* @access public
* @override
* @param DB_ORM_Model $model a reference to the implementing model
* @param array $metadata the relation's metadata
*/
public function __construct(DB_ORM_Model $model, array $metadata = array())
{
parent::__construct($model, 'has_many');
// the parent model is the referenced table
$parent_model = get_class($model);
// Get parent model's name into variable, otherways a late static binding code throws a
// syntax error when used like this: $this->metadata['parent_model']::primary_key()
$this->metadata['parent_model'] = $parent_model;
// the parent key (i.e. candidate key) is an ordered list of field names in the parent model
$this->metadata['parent_key'] = isset($metadata['parent_key']) ? (array) $metadata['parent_key'] : $parent_model::primary_key();
// the through model is the pivot table
if (isset($metadata['through_model'])) {
$this->metadata['through_model'] = DB_ORM_Model::model_name($metadata['through_model']);
}
// the through keys is an array of two ordered lists of fields names: [0] matches with parent key and [1] matches with child key
if (isset($metadata['through_keys'])) {
$this->metadata['through_keys'] = (array) $metadata['through_keys'];
}
// the child model is the referencing table
$this->metadata['child_model'] = DB_ORM_Model::model_name($metadata['child_model']);
// the child key (i.e. foreign key) is an ordered list of field names in the child model
$this->metadata['child_key'] = (array) $metadata['child_key'];
// a set of options that will modify the query
$this->metadata['options'] = isset($metadata['options']) ? (array) $metadata['options'] : array();
}
/**
* This constructor initializes the class.
*
* @access public
* @override
* @param DB_ORM_Model $model a reference to the implementing model
* @param array $metadata the relation's metadata
*/
public function __construct(DB_ORM_Model $model, array $metadata = array())
{
parent::__construct($model, 'has_one');
// the parent model is the referenced table
$parent_model = get_class($model);
// Get parent model's name into variable, otherways a late static binding code throws a
// syntax error when used like this: $this->metadata['parent_model']::primary_key()
$this->metadata['parent_model'] = $parent_model;
// the parent key (i.e. candidate key) is an ordered list of field names in the parent model
$this->metadata['parent_key'] = isset($metadata['parent_key']) ? (array) $metadata['parent_key'] : $parent_model::primary_key();
// the child model is the referencing table
$this->metadata['child_model'] = DB_ORM_Model::model_name($metadata['child_model']);
// the child key (i.e. foreign key) is an ordered list of field names in the child model
$this->metadata['child_key'] = (array) $metadata['child_key'];
}
