gistfile1.txt

## Places Model
Class Places

  # I added through Houses, removed depdendent: :destroy (see comment)
  has_many :campsites, dependent: :destroy
  #has_many :days, dependent: :destroy
  has_many :days, through: :houses
  
end

### Houses model
Class Houses

  has_many :days, dependent: :destroy
  belongs_to :places
  
end 

### Controller
Class Dashboard::DaysController < ApplicationController

  def home
      places_id = params[:places_id]
      @places = Places.includes(houses: [:days]).find(places_id)
      # And now this is broken
      @date_range = @places.days.group('id, date').count.keys.sort
  end

PG::AmbiguousColumn: ERROR: column reference "id" is ambiguous LINE 1: SELECT COUNT() AS count_all, id, date AS id_date FROM "days... ^ : SELECT COUNT() AS count_all, id, date AS id_date FROM "days" INNER JOIN "houses" ON "days"."house_id" = "houses"."id" WHERE "houses"."place_id" = $1 GROUP BY id, date