/**
* {@inheritdoc}
*/
public function createEquivalent()
{
if (!$this->hasEquivalent()) {
throw new RelationSchemaException("Relation '{$this->record}'.'{$this}' does not have equivalents.");
}
//Let's convert to polymorphic
$definition = [static::EQUIVALENT_RELATION => $this->target] + $this->definition;
unset($definition[static::RELATION_TYPE]);
//Usually when relation declared as polymorphic
return $this->builder->relationSchema($this->record, $this->name, $definition);
}
/**
* Declare new record relation by it's name and definition. Only unique relations can be added.
*
* @see SchemaBuilder::relationSchema()
* @param string $name
* @param array $definition
* @throws RecordSchemaException
*/
public function addRelation($name, array $definition)
{
if (isset($this->relations[$name])) {
throw new RecordSchemaException("Unable to create relation '{$this}'.'{$name}', relation already exists.");
}
$relation = $this->builder->relationSchema($this, $name, $definition);
//We can cast relation only if it's parent class has active schema
if ($this->isActive() && $relation->isReasonable()) {
//Initiating required columns, foreign keys and indexes
$relation->buildSchema();
}
$this->relations[$name] = $relation;
}
