Sequelize transaction for User -> hasMany -> Organization / Organization -> belongsTo -> User

user.coffee

# Correct way to save related model data with transaction
# A transaction is required if we want validation of related model data
# Sequelize docs don't provide exact instructions for this

await db.sequelize.transaction((t) ->
  return db.User.create(data, { transaction: t, fields: ['email', 'password'] }).then((user) ->
    return user.createOrganization(data.org, { transaction: t, fields: ['name'] });
  )
).nodeify defer err, user