/**
* Gets whether this model has a relation with the provided model
* @param string $modelName Name of the relation model
* @param integer $type Type identifier to get only the provided type
* @return boolean True if there is a field with a relation to the provided model, false otherwise
*/
public function hasRelationWith($modelName, $type = null)
{
$relations = $this->table->getRelationFields($modelName);
if ($type !== null) {
return array_key_exists($type, $relations) && !empty($relations[$type]);
}
return !(empty($relations[ModelTable::HAS_MANY]) && empty($relations[ModelTable::HAS_ONE]) && empty($relations[ModelTable::BELONGS_TO]));
}
/**
* @expectedException zibo\library\orm\exception\OrmException
*/
public function testGetRelationFieldsThrowsExceptionWhenInvalidTypeProvided()
{
$table = new ModelTable('table');
$table->getRelationFields('model', 'test');
}
/**
* Deletes or clears, depending on the keepRecord argument, the values of the provided table
* which have a relation with the provided data
* @param zibo\library\orm\definition\ModelTable $modelTable Table definition of the model of the has many relation
* @param integer $id Primary key of the data
* @param boolean $keepRecord True to clear the link, false to delete the link
* @return null
*/
private function clearHasMany(ModelTable $modelTable, $id, $keepRecord)
{
$table = new TableExpression($modelTable->getName());
$relationFields = $modelTable->getRelationFields($this->getName());
$fields = $relationFields[ModelTable::BELONGS_TO];
foreach ($fields as $field) {
$fieldName = $field->getName();
if ($keepRecord) {
$statement = new UpdateStatement();
$statement->addValue(new FieldExpression($fieldName), null);
} else {
$statement = new DeleteStatement();
}
$condition = new SimpleCondition(new FieldExpression($fieldName), new SqlExpression($id), Condition::OPERATOR_EQUALS);
$statement->addTable($table);
$statement->addCondition($condition);
$this->executeStatement($statement);
}
$model = $this->getModel($modelTable->getName());
$model->clearCache();
}
/**
* Gets the foreign keys from the provided model table for the provided relation model. When no foreign keys are found and the relation
* model is a localized model, the unlocalized model will be queried for the foreign keys.
* @param zibo\library\orm\definition\ModelTable $modelTable Table definition of the model
* @param string $relationModelName Model name to get the foreign keys of
* @return array Array with ModelField objects
* @throws zibo\library\orm\exception\ModelException when there are no foreign keys found the provided model
*/
private function getForeignKeys(ModelTable $modelTable, $relationModelName)
{
if (!$relationModelName) {
throw new ModelException('Provided relation model name is empty');
}
$foreignKeys = $modelTable->getRelationFields($relationModelName, ModelTable::BELONGS_TO);
if (!$foreignKeys) {
if (preg_match('/' . LocalizedModel::MODEL_SUFFIX . '$/', $relationModelName)) {
$relationModelName = substr($relationModelName, 0, strlen(LocalizedModel::MODEL_SUFFIX) * -1);
$foreignKeys = $modelTable->getRelationFields($relationModelName, ModelTable::BELONGS_TO);
}
if (!$foreignKeys) {
throw new ModelException('No foreign key found for ' . $relationModelName . ' found in ' . $modelTable->getName());
}
}
return $foreignKeys;
}
