Method m2a

packages/schema-builder/src/field.ts:298–340

(related_collections: string[], relation_callback?: (options: M2AOptions) => M2AOptions | void)

	}

	m2a(related_collections: string[], relation_callback?: (options: M2AOptions) => M2AOptions | void): this {
		assert(this._data._kind === 'initial', 'Field type was already set');
		assert(this._schema && this._collection, 'Field needs to be part of a schema');

		this._data = {
			field: this._data.field,
			...FIELD_DEFAULTS,
			type: 'alias',
			dbType: null,
			special: ['m2a'],
			_kind: 'finished',
		};

		const junction_name = `${this._collection.get_name()}_builder`;

		let o2m_relation = new RelationBuilder(this._collection.get_name(), this.get_name())
			.o2m(junction_name, `${this._collection.get_name()}_id`)
			.options({
				meta: {
					junction_field: `item`,
				},
			});

		let a2o_relation = new RelationBuilder(junction_name, 'item').a2o(related_collections).options({
			meta: {
				junction_field: `${this._collection.get_name()}_id`,
			},
		});

		if (relation_callback) {
			const new_relations = relation_callback({ o2m_relation, a2o_relation });

			if (new_relations) {
				o2m_relation = new_relations.o2m_relation;
				a2o_relation = new_relations.a2o_relation;
			}
		}

		this._schema._relations.push(o2m_relation);
		this._schema._relations.push(a2o_relation);

		return this;
	}

	m2m(related_collection: string, relation_callback?: (options: M2MOptions) => M2MOptions | void): this {
		assert(this._data._kind === 'initial', 'Field type was already set');