my-links/database/migrations/1714254076754_create_links_table.ts

import { defaultTableFields } from '#database/default_table_fields';
import { BaseSchema } from '@adonisjs/lucid/schema';

export default class CreateLinksTable extends BaseSchema {
	static tableName = 'links';

	async up() {
		const exists = await this.schema.hasTable(CreateLinksTable.tableName);
		if (exists) {
			return console.warn(`Table ${CreateLinksTable.tableName} already
			exists.`);
		}

		this.schema.createTable(CreateLinksTable.tableName, (table) => {
			table.string('name', 254).notNullable();
			table.string('description', 254).nullable();
			table.text('url').notNullable();
			table.boolean('favorite').notNullable().defaultTo(0);
			table
				.integer('collection_id')
				.references('id')
				.inTable('collections')
				.onDelete('CASCADE');
			table
				.integer('author_id')
				.references('id')
				.inTable('users')
				.onDelete('CASCADE');

			defaultTableFields(table);
		});
	}

	async down() {
		this.schema.dropTable(CreateLinksTable.tableName);
	}
}