var DataSource = require('loopback-datasource-juggler').DataSource;
var ModelBuilder = require('loopback-datasource-juggler').ModelBuilder;
var ds = new DataSource('memory', ModelBuilder);

var Post = ds.createModel('Post', {
  title: { type: String, length: 255 }
});

var User = ds.createModel('User', {
  name: { type: String, required: true },
  bio: { type: String, required: true }
},
{
  relations: {
    posts: {
      type: 'hasMany',
      model: 'Post',
      foreignKey: ''
    }
  }
});

User.create({ name: 'some', bio: 'developer' }, function(err, instance) {
  if (err) return console.error(err);
  console.log('User created: ', instance);
  Post.create([{ title: 'sometitle1', userId: instance.id }, { title: 'sometitle2', userId: instance.id }], function(err, instance) {
    if (err) return console.error(err);
    console.log('Post created: ', instance);
  });
  User.find({ include: {relation: 'posts'} }, function (err, users) {
      console.log('user', JSON.stringify(users));
  })
});