@tanglemedia/directus-collection-flex-editor/migrations/20251231D-tngl_flex-~-add-item-duplication-fields-to-tngl_flex_content_nodes.mjs

Creates the flex table and some basic related nodes like image, resource, embed, and section

const COLLECTION_NAME = "tngl_flex_content_nodes";
const SUBCOLLECTIONS = [
	"tngl_node_resource",
	"tngl_node_image",
	"tngl_node_section",
	"tngl_node_embed",
];

export async function up(knex) {
	// if row exists in directus_collections table, do not proceed with migration
	const collectionExists = await knex("directus_collections")
		.select("collection")
		.where("collection", COLLECTION_NAME)
		.first();

	// register table into `directus_collections` table
	// for full list of directus_collections properties, refer to: https://docs.directus.io/reference/system/collections.html

	if (collectionExists) {
		// prepare the item duplication fields based on the subcomponent collections
		let allowedCollectionsPromises = SUBCOLLECTIONS.map((subCollection) => {
			return knex.schema.hasTable(subCollection);
		});
		allowedCollectionsPromises = await Promise.all(allowedCollectionsPromises);
		const finalAllowedCollections = SUBCOLLECTIONS.filter(
			(subCollection, index) => allowedCollectionsPromises[index]
		);

		const itemDuplicationFields = finalAllowedCollections.map(
			(subCollection) => {
				return `item:${subCollection}.id`;
			}
		);

		// update the directus_collections table
		await knex("directus_collections")
			.where({ collection: COLLECTION_NAME })
			.update({
				item_duplication_fields: JSON.stringify(itemDuplicationFields),
			})
			.then((res) => console.log("result", res))
			.catch((err) => console.error(err));
	}

}

export async function down(knex) {
	// reset the item_duplication_fields fields of the directus_collections table
	await knex("directus_collections")
		.where("collection", COLLECTION_NAME)
		.update({
			item_duplication_fields: null,
		});
}