dates.js

* get(params, user_id) {
    const query = knex
                 .select(['habits.*',
                          'dates.created_at as dates_created_at', 'dates.date', 'dates.skip'])
                 .where({ user_id })
                 .orderBy('position', 'ASC')
                 .from('habits');

    if (params.stats) {
      query.leftJoin('dates', 'habits.id', '=', 'dates.habit_id');
    }

    return yield query
    .then(habits => habits);
  },