Drizzle type question

I swapped over to Drizzle, and I've got this schema right

export const User = mysqlTable('users', {
  id: serial('id').primaryKey(),
  username: text('username').unique(),
  passwordHash: text('password_hash'),
  passwordSalt: text('password_salt'),
  role: mysqlEnum('role', ['user', 'admin']),
  createdAt: timestamp('created_at').notNull().default(new Date()),
  updatedAt: timestamp('updated_at').notNull().default(new Date()),
});
export const Session = mysqlTable('sessions', {
  id: serial('id').primaryKey(),
  token: text('token').unique(),
  csrfToken: text('csrf_token'),
  expiresAt: timestamp('expires_at').notNull(),
  userid: int('user_id').references(() => User.id),
});

export const User = mysqlTable('users', {
  id: serial('id').primaryKey(),
  username: text('username').unique(),
  passwordHash: text('password_hash'),
  passwordSalt: text('password_salt'),
  role: mysqlEnum('role', ['user', 'admin']),
  createdAt: timestamp('created_at').notNull().default(new Date()),
  updatedAt: timestamp('updated_at').notNull().default(new Date()),
});
export const Session = mysqlTable('sessions', {
  id: serial('id').primaryKey(),
  token: text('token').unique(),
  csrfToken: text('csrf_token'),
  expiresAt: timestamp('expires_at').notNull(),
  userid: int('user_id').references(() => User.id),
});

And I'm trying to get a session based on an id coming from the client

const session = await db
    .select()
    .from(Session)
    .where(eq(Session.token, sessionToken))
    .innerJoin(User, eq(Session.userid, User.id)).limit(1)
    .execute();

const session = await db
    .select()
    .from(Session)
    .where(eq(Session.token, sessionToken))
    .innerJoin(User, eq(Session.userid, User.id)).limit(1)
    .execute();

This seems right, right? But why in the world is the type of session an array consisting of an object with a users and sessions prop?

session: {
    sessions: {
        id: number;
        token: string | null;
        csrfToken: string | null;
        expiresAt: Date;
        userid: number | null;
    };
    users: {
        id: number;
        username: string | null;
        passwordHash: string | null;
        passwordSalt: string | null;
        role: "user" | ... 1 more ... | null;
        createdAt: Date;
        updatedAt: Date;
    };
}[]

session: {
    sessions: {
        id: number;
        token: string | null;
        csrfToken: string | null;
        expiresAt: Date;
        userid: number | null;
    };
    users: {
        id: number;
        username: string | null;
        passwordHash: string | null;
        passwordSalt: string | null;
        role: "user" | ... 1 more ... | null;
        createdAt: Date;
        updatedAt: Date;
    };
}[]

Solution:

And limit 1 still returns an array btw. So you have to do data[0].sessions

Jump to solution

5 Replies

barryOP•16mo ago

To use this I'd have to do this session.at(0)?.sessions session.at(0)?.users Which seems like an odd thing

Kasper•16mo ago

It's called session because you called the cost session. Just switch to cost data and then it's data.session and data.users Or you can do a spread operator in the select() select({ ...session, users: users })

Solution

Kasper•16mo ago

And limit 1 still returns an array btw. So you have to do data[0].sessions

Kasper•16mo ago

If I want one of something, I usually write it like this:

async function getCustomer(cid: string) {
    const res = await db.select().from(customers).where(eq(customers.id, cid));

    if (res.length === 0) {
        return null;
    }

    return res[0];
}

export default async function Page({
    params: { cid },
}: {
    params: { cid: string };
}) {
    const customer = await getCustomer(cid);

    if (!customer) {
        return <p>Something went wrong.</p>;
    }

    return (
        <>
            <h1 className="text-2xl font-medium">{customer.name}</h1>
        </>
    );
}

async function getCustomer(cid: string) {
    const res = await db.select().from(customers).where(eq(customers.id, cid));

    if (res.length === 0) {
        return null;
    }

    return res[0];
}

export default async function Page({
    params: { cid },
}: {
    params: { cid: string };
}) {
    const customer = await getCustomer(cid);

    if (!customer) {
        return <p>Something went wrong.</p>;
    }

    return (
        <>
            <h1 className="text-2xl font-medium">{customer.name}</h1>
        </>
    );
}

barryOP•16mo ago

Thx

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Programming

Drizzle type question