Drizzle Team•17mo ago

How to query from a many to many relationship?

Hi all, I am trying to get all the posts by a user. My schema has a many-to-many relationship set up for posts and users.

export const posts = pgTable('posts', {
  id: uuid('id').primaryKey().defaultRandom().unique().notNull(),
});

export const postsRelations = relations(posts, ({ many }) => ({
  users: many(users),
}));

export type Post = InferModel<typeof posts>;

And then:

export const users = pgTable('users', {
  id: uuid('id').primaryKey().defaultRandom().unique().notNull(),
});

export const usersRelations = relations(users, ({ many }) => ({
  posts: many(posts),
}));

export type User = InferModel<typeof users>;

Now in my file I want to

export default async function getAllUsersPosts(userId: string): Promise<Post[]> {
  const results = await queryDB.select().from(posts).where(eq(posts.users.id, userId));
  return results;
}

Error is:

Property 'users' does not exist on type 'PgTableWithColumns<{ name: "posts"; schema: undefined; columns: { id: PgColumn<{ name: "id"; tableName: "posts"; dataType: "string"; columnType: "PgUUID"; data: string; driverParam: string; notNull: true; hasDefault: true; enumValues: undefined; baseColumn: never; }

1 Reply

Liltripple_reid•17mo ago

you can maybe use the RQB instead like

const data = await queryDB.query.posts.findMany({
  with: {
     user: true
  }
})

const data = await queryDB.query.posts.findMany({
  with: {
     user: true
  }
})

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How to query from a many to many relationship?