thinky models in separate files: how to handle cyclical/circular dependencies

Question

I tried to follow the example here, however have no luck with it.

I have User Model in user.js file:

import thinky from './thinky';
let type = thinky.type;
let User = thinky.createModel('User', {
  id: type.string(),
  username: type.string(),
});
export default User;

let Game = require('./game');
User.hasAndBelongsToMany(Game, "games", "id", "id");

Game Model in game.js file:

import thinky from './thinky';
let type = thinky.type;
let Game = thinky.createModel('Game', {
  id: type.string(),
  host: type.string()
});

export default Game;

let User = require('./user');
Game.hasAndBelongsToMany(User, "players", "id", "id");

When I try to import them to test.js file, where I create instances of User and Game, I get First argument of hasAndBelongsToMany must be a Model

I tried to write it without es6 syntax, still does not work...

Answer 1

Im my example if you change export default to module.exports, everything should work

Answer 2

You can also try this loader designed for the very purpose of loading multiple model definitions and making them available to your app.

https://github.com/mwielbut/thinky-loader

Answer 3

We need to avoid the circular reference so..

user.js

import thinky from './thinky';
let type = thinky.type;
let User = thinky.createModel('User', {
  id: type.string(),
  username: type.string(),
});
export default User;

game.js

import thinky from './thinky';
let type = thinky.type;
let Game = thinky.createModel('Game', {
  id: type.string(),
  host: type.string()
});

export default Game;

index.js

import User from './user';
import Game from './game';

Game.hasAndBelongsToMany(User, "players", "id", "id");
User.hasAndBelongsToMany(Game, "games", "id", "id");

export {User, Game};