relation method

Relation relation(
  1. String collectionName,
  2. String localKey, {
  3. required String name,
})

Implementation

Relation relation(String collectionName, String localKey, {required String name}) {
  if (_relations.containsKey(name)) throw ArgumentError("Relation $name already exists");

  final relation = Relation(name: name)
    ..localCollection = collectionName
    ..localKey = localKey;

  _relations[name] = relation;
  return relation;
}