hasManyThroughPolymorphic<R extends Model, I extends Model> method

HasManyThrough<R, I> hasManyThroughPolymorphic<R extends Model, I extends Model>(R relatedCreator(Map<String, dynamic>), I intermediateCreator(Map<String, dynamic>), { required String name, required String type, String? firstKey, String? secondKey, })

Defines a distant 1:N relationship where the target model is polymorphic.

Example: User has many Comments through Post. (User -> Post -> Comment), but Comment is polymorphic (commentable_id, commentable_type).

This automatically sets the secondKey to ${name}_id and filters by ${name}_type.

• name: The polymorphic prefix (e.g. 'commentable').
• type: The discriminator value (e.g. 'posts').

Implementation

HasManyThrough<R, I>
hasManyThroughPolymorphic<R extends Model, I extends Model>(
  R Function(Map<String, dynamic>) relatedCreator,
  I Function(Map<String, dynamic>) intermediateCreator, {
  required String name,
  required String type,
  String? firstKey,
  String? secondKey,
}) {
  final relation = hasManyThrough(
    relatedCreator,
    intermediateCreator,
    firstKey: firstKey,
    secondKey: secondKey ?? '${name}_id',
  );

  relation.where('${name}_type', type);

  return relation;
}