protected function checkForIncludes($source, JsonApiRootNode $jsonApiRootNode, $relationshipNamesToInclude)
{
if (!$source->isEmpty) {
$modelClassName = $this->modelClassName;
$fetchedCollections = array();
// we will cache collections here, so we don't get duplicate data to include when multiple relationships point to the same object
foreach ($relationshipNamesToInclude as $relationshipNameToInclude) {
if ($modelClassName::hasRelationship($relationshipNameToInclude)) {
// first of all, we fetch the data
$source->fetch($relationshipNameToInclude);
$fetchedObject = $source->get($relationshipNameToInclude);
// We don't know yet if this is a Collection or a Model we just fetched,
// as the source we fetched it from can be both as well
if ($fetchedObject instanceof Collection) {
$fetchedCollection = $fetchedObject;
if (!$fetchedCollection->isEmpty) {
// next we get the type of the data we fetched
$relationship = $modelClassName::getRelationship($relationshipNameToInclude);
$relationshipType = $relationship->modelType;
// Here we check if we already fetched data of the same type
if (array_key_exists($relationshipType, $fetchedCollections)) {
// we already fetched data of the same type before, lets merge it with the data we have, so we don't create duplicates in the response
// luckally for us, collection->put() handles duplicates by checking for id
$previouslyFetchedCollection = $fetchedCollections[$relationshipType];
foreach ($fetchedCollection as $model) {
$previouslyFetchedCollection->put($model);
}
} else {
// we haven't fetched this type yet, lets cache it in case we do later
$fetchedCollections[$relationshipType] = $fetchedCollection;
}
}
} else {
if ($fetchedObject instanceof Model) {
$fetchedModel = $fetchedObject;
if (!empty($fetchedModel)) {
// next we get the type of the data we fetched
$relationship = $modelClassName::getRelationship($relationshipNameToInclude);
$relationshipType = $relationship->modelType;
// now we check if we already included objects of the same type
if (!array_key_exists($relationshipType, $fetchedCollections)) {
// we haven't fetched this type yet, lets cache it in case we do later
$fetchedCollections[$relationshipType] = Collection::forge($relationshipType);
}
$previouslyFetchedCollection = $fetchedCollections[$relationshipType];
$previouslyFetchedCollection->put($fetchedModel);
}
}
}
}
}
// now that we cached the collections, it's just a matter of looping them, and including the data in our response
foreach ($fetchedCollections as $fetchedCollection) {
if (!$fetchedCollection->isEmpty) {
$serializedCollection = $fetchedCollection->getJsonApiNode();
$jsonApiRootNode->addInclude($serializedCollection);
}
}
}
}
public function fetchCollection()
{
$entities = $this->fetch();
return Collection::forge($this->modelType, null, $entities);
}