public function getConstructorArgs()
{
$constructorArgs = parent::getConstructorArgs();
if (isset($constructorArgs['meta']) && empty($constructorArgs['meta'])) {
unset($constructorArgs['meta']);
}
if (isset($constructorArgs['extends'])) {
if (StringHelper::isEmpty($constructorArgs['extends']) || Model::isModelBase($constructorArgs['extends'])) {
unset($constructorArgs['extends']);
} else {
$constructorArgs['extends'] = ClassHelper::getNameFromNs($constructorArgs['extends'], BaseOrm::getModelsNamespace());
}
}
return $constructorArgs;
}
public function registerModel(Model $model)
{
$name = ClassHelper::getNameFromNs($model->meta->modelName, BaseOrm::getModelsNamespace());
if (!ArrayHelper::hasKey($this->allModels, $name)) {
$this->allModels[$name] = $model;
}
$this->resolvePendingOps($model);
}
/**
* {@inheritdoc}
*/
public function getConstructorArgs()
{
$kwargs = parent::getConstructorArgs();
if (ArrayHelper::hasKey($kwargs, 'onDelete')) {
$kwargs['onDelete'] = $this->relation->onDelete;
}
if (is_string($this->relation->toModel)) {
$kwargs['to'] = $this->relation->toModel;
} else {
$name = $this->relation->toModel->getFullClassName();
$kwargs['to'] = ClassHelper::getNameFromNs($name, BaseOrm::getModelsNamespace());
}
if ($this->relation->parentLink) {
$kwargs['parentLink'] = $this->relation->parentLink;
}
return $kwargs;
}
/**
* Gets information about a model and all its parent.
*
* Some fact to check for :
* - proxy model should have at least one concrete model.
* - proxy model should not extend an abstract class that contains fields.
*
* returns the concrete model in the hierarchy and the fields in each of the models in the hierarchy.
*
* @param string $method the method to invoke
* @param null $args the arguments to pass to the method
* @param bool|true $fromOldest do we traverse from BaseObject to the child model
*
* @return array
*
* @throws TypeError
* @throws FieldError
*
* @since 1.1.0
*
* @author Eddilbert Macharia (http://eddmash.com) <*****@*****.**>
*/
private function getHierarchyMeta($method = 'unboundFields', $args = null, $fromOldest = true)
{
$modelNamespace = BaseOrm::getModelsNamespace();
$isProxy = $this->meta->proxy;
// start from oldest parent e.g BaseObject to the last child model
$parents = $this->getParents([\PModel::getFullClassName(), self::getFullClassName()]);
$parents = array_merge([$this->getFullClassName() => new \ReflectionObject($this)], $parents);
if ($fromOldest) {
$parents = array_reverse($parents);
}
$modelFields = [];
$concreteParent = null;
$immediateParent = null;
$previousAbstractParent = null;
/** @var $reflectionParent \ReflectionClass */
/* @var $concreteParent \ReflectionClass */
foreach ($parents as $index => $reflectionParent) {
$parentName = $reflectionParent->getName();
$isOnCurrentModel = $this->getFullClassName() === $parentName;
if (!$reflectionParent->hasMethod($method) || $reflectionParent->getMethod($method)->isAbstract()) {
continue;
}
// concrete is a class that can be instantiated.
// check for at least one concrete parent nearest to the last child model.
// since we are going downwards we keep updating the concrete variable.
if (!($isOnCurrentModel && $isProxy) && $reflectionParent->isInstantiable()) {
$concreteParent = $reflectionParent;
}
// ************ get the fields *******************
// we need to call the parent version of the method for each class to get its fields
// this is how we bypass the overriding functionality of php, otherwise if we don't do this the $method will
// always provide the fields defined in the last child class.
$parentMethodCall = sprintf('%1$s::%2$s', $parentName, $method);
if ($args != null) {
if (is_array($args)) {
$fields = call_user_func_array([$this, $parentMethodCall], $args);
} else {
$fields = call_user_func([$this, $parentMethodCall], $args);
}
} else {
$fields = call_user_func([$this, $parentMethodCall]);
}
// =========================== Some Validations ========================
/*
* confirm fields with same name don't exist on the parents and current model.
* i choose to through an exception of overriding for consistence sake. that is on the $method no overriding
* takes place.
*
*/
if ($immediateParent != null && $immediateParent != $previousAbstractParent) {
$fieldKeys = array_keys($fields);
$parentKeys = isset($modelFields[$immediateParent]) ? array_keys($modelFields[$immediateParent]) : [];
$commonFields = array_intersect($parentKeys, $fieldKeys);
if (!empty($commonFields)) {
throw new FieldError(sprintf('Local field [ %s ] in class "%s" clashes with field of similar name from base class "%s" ', implode(', ', $commonFields), $parentName, $immediateParent));
}
}
// if the parent is an abstract model and the current model is a proxy model
// the parent should not have any fields. abstract models cant have fields
// incases where the child is a proxy model
if ($isOnCurrentModel && $isProxy && $immediateParent === $previousAbstractParent) {
$parentFields = $modelFields[$previousAbstractParent];
if (!empty($parentFields)) {
throw new TypeError(sprintf('Abstract base class containing model fields not ' . "permitted for proxy model '%s'.", $parentName));
}
}
// ****************** Import fields from Abstract ***************
// get fields of immediate parent fields if it was an abstract model add them to child model.
if (!$isProxy && $previousAbstractParent != null) {
$parentFields = isset($modelFields[$previousAbstractParent]) ? $modelFields[$previousAbstractParent] : [];
$fields = array_merge($parentFields, $fields);
}
if ($reflectionParent->isAbstract()) {
$previousAbstractParent = $parentName;
} else {
$previousAbstractParent = null;
}
if (!$isOnCurrentModel) {
$immediateParent = $parentName == $previousAbstractParent ? '' : $parentName;
}
$modelFields[ClassHelper::getNameFromNs($parentName, $modelNamespace)] = $fields;
}
if ($isProxy && $concreteParent == null) {
throw new TypeError(sprintf("Proxy model '%s' has no non-abstract" . ' model base class.', $this->getShortClassName()));
}
return [$concreteParent == null ?: ClassHelper::getNameFromNs($concreteParent->getName(), $modelNamespace), $immediateParent, $modelFields];
}
public function getName($name)
{
return ClassHelper::getNameFromNs($name, BaseOrm::getModelsNamespace());
}
/**
* Defines a new model class.
*
* we create a new namespace and define new classes because, we might be dealing with a model that has been dropped
* Meaning if we try to load the model using the normal way, we will get and error of model does not exist.
*
* @param string $className
* @param string $extends
*
* @return Model
*
* @since 1.1.0
*
* @author Eddilbert Macharia (http://eddmash.com) <*****@*****.**>
*/
private static function createInstance($className, $extends = '')
{
if (!ClassHelper::classExists($className, BaseOrm::getModelsNamespace())) {
MigrationModel::defineClass($className, $extends);
}
return new $className();
}
