Theo's Typesafe Cult•15mo ago

drizzle many-to-many

https://gist.github.com/barrybtw/f4c54bf7bdac98af34069363d7b1be87 Trying to setup a many-to-many relationship between calendar and user. But I'm getting some weird Typescript errors.

Argument of type 'Relations<"calendar_participant", { calendar: One<"calendar", true>; user: One<"user", true>; }>' is not assignable to parameter of type 'Table<TableConfig$3<Column<any, object, object>>>'.ts(2345)
Argument of type 'Relations<"calendar_participant", { calendar: One<"calendar", true>; user: One<"user", true>; }>' is not assignable to parameter of type 'Table<TableConfig$3<Column<any, object, object>>>'.
Type 'Relations<"calendar_participant", { calendar: One<"calendar", true>; user: One<"user", true>; }>' is missing the following properties from type 'Table<TableConfig$3<Column<any, object, object>>>': _, getSQL, [IsDrizzleTable]ts(2345)

Argument of type 'Relations<"calendar_participant", { calendar: One<"calendar", true>; user: One<"user", true>; }>' is not assignable to parameter of type 'Table<TableConfig$3<Column<any, object, object>>>'.ts(2345)
Argument of type 'Relations<"calendar_participant", { calendar: One<"calendar", true>; user: One<"user", true>; }>' is not assignable to parameter of type 'Table<TableConfig$3<Column<any, object, object>>>'.
Type 'Relations<"calendar_participant", { calendar: One<"calendar", true>; user: One<"user", true>; }>' is missing the following properties from type 'Table<TableConfig$3<Column<any, object, object>>>': _, getSQL, [IsDrizzleTable]ts(2345)

Gist

drizzle.schema.ts

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Solution:

oh wait im a dumb dumb i was using the relation definition instead of the table for the many relation input

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2 Replies

barry•15mo ago

Lemm walk through it, might make sense

export const user = pgTable(
  'user',
  {
    id: serial('id').primaryKey(),
    username: varchar('username', { length: 255 }).unique(),
    password_hash: varchar('password_hash', { length: 255 }).notNull(),
    password_salt: varchar('password_salt', { length: 255 }).notNull(),
    name: varchar('name', { length: 255 }),
  },
  (table) => {
    return {
      usernameIdx: uniqueIndex('username_idx').on(table.username),
      idIdx: uniqueIndex('id_idx').on(table.id),
    };
  },
);

export const user = pgTable(
  'user',
  {
    id: serial('id').primaryKey(),
    username: varchar('username', { length: 255 }).unique(),
    password_hash: varchar('password_hash', { length: 255 }).notNull(),
    password_salt: varchar('password_salt', { length: 255 }).notNull(),
    name: varchar('name', { length: 255 }),
  },
  (table) => {
    return {
      usernameIdx: uniqueIndex('username_idx').on(table.username),
      idIdx: uniqueIndex('id_idx').on(table.id),
    };
  },
);

We've got a user storing all this, which has a one to many relationship with both the session table and calendar table like this

export const user_relations = relations(user, ({ many }) => ({
  session: many(session),
  calendar: many(calendar_to_user_relations),
}));

export const user_relations = relations(user, ({ many }) => ({
  session: many(session),
  calendar: many(calendar_to_user_relations),
}));

calendar_to_user_relations is a junction/join table Session is irrelevant to the error so let's skip to the calendar table

export const calendar = pgTable(
  'calendar',
  {
    id: serial('id').primaryKey(),
    name: varchar('name', { length: 255 }).notNull(),
    description: varchar('description', { length: 255 }),
    time_of_creation: timestamp('creation_date').defaultNow(),
    author_id: serial('author_id').notNull(),
  },
  (table) => {
    return {
      nameIdx: uniqueIndex('name_idx').on(table.name),
    };
  },
);

export const calendar = pgTable(
  'calendar',
  {
    id: serial('id').primaryKey(),
    name: varchar('name', { length: 255 }).notNull(),
    description: varchar('description', { length: 255 }),
    time_of_creation: timestamp('creation_date').defaultNow(),
    author_id: serial('author_id').notNull(),
  },
  (table) => {
    return {
      nameIdx: uniqueIndex('name_idx').on(table.name),
    };
  },
);

And it's one to many relationship with the junction table

export const calendar_relations = relations(calendar, ({ many }) => ({
  calendar_to_user_relations: many(calendar_to_user_relations),
}));

export const calendar_relations = relations(calendar, ({ many }) => ({
  calendar_to_user_relations: many(calendar_to_user_relations),
}));

The junction table looks like this

export const calendar_participant = pgTable('calendar_participant', {
  id: serial('id').primaryKey(),
  calendar_id: serial('calendar_id').notNull(),
  user_id: serial('user_id').notNull(),
});

export const calendar_to_user_relations = relations(
  calendar_participant,
  ({ one }) => ({
    calendar: one(calendar, {
      fields: [calendar_participant.calendar_id],
      references: [calendar.id],
    }),
    user: one(user, {
      fields: [calendar_participant.user_id],
      references: [user.id],
    }),
  }),
);

export const calendar_participant = pgTable('calendar_participant', {
  id: serial('id').primaryKey(),
  calendar_id: serial('calendar_id').notNull(),
  user_id: serial('user_id').notNull(),
});

export const calendar_to_user_relations = relations(
  calendar_participant,
  ({ one }) => ({
    calendar: one(calendar, {
      fields: [calendar_participant.calendar_id],
      references: [calendar.id],
    }),
    user: one(user, {
      fields: [calendar_participant.user_id],
      references: [user.id],
    }),
  }),
);

The errors are on both one-to-many relations between both user and calendar to the junction table

Solution

barry•15mo ago

oh wait im a dumb dumb i was using the relation definition instead of the table for the many relation input

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drizzle many-to-many