how to join an associated table with a has_one association

In my Rails app, I only require users to enter email and name upon signup, but then give them the option to provide fuller contact details for their profile. Therefore, I have a User.rb model that has an association with Contact.rb, namely, User.rb ``` has_one :contact ``` Contact.rb ``` belongs_to :user ``` Contact.rb has the predictable fields you might expect such as address, postal code etc, but it also stores the province_id for a relation with the Province.rb model, so Contact.rb ``` attr_accessible :address, :city, :mobile, :postalcode, :province_id, :user_id belongs_to :user belongs_to :province ``` Province.rb ``` has_many :contacts ``` I did it that way (rather than storing the name of the province as a "string" on contact.rb) so that I could more easily (so I thought) categorize users by province. In the show action of one of the artists_controller, I do the following to check whether the user is trying to sort by province and then call an artists_by_province method that does a search ``` if params[:province_id] province = params[:province_id] province = province.to_i #convert string to integer @artistsbyprovince = User.artists_by_province(province) else @artists = User.where(:sculptor => true) end ``` This is the method on the User.rb model that it calls if a province id is passed in ``` scope :artists_by_province, lambda {|province| joins(:contact). where( contact: {province_id: province}, users: {sculptor: true}) } ``` However it gives me this error: ``` Could not find table 'contact' ``` If I make contacts plural ``` scope :artists_by_province, lambda {|province| joins(:contacts). where( contacts: {province_id: province}, users: {sculptor: true}) } ``` This error ``` Association named 'contacts' was not found; perhaps you misspelled it? ``` Can anyone tell me what I'm doing wrong when I'm making this query? Update: I changed some of the details after posting because my copy and paste had some problems with it P.S. ignore the fact that I'm searching for a 'sculptor.' I changed the names of the user types for the question. from schema.rb ``` create_table "contacts", :force => true do |t| t.string "firm" t.string "address" t.string "city" t.string "postalcode" t.string "mobile" t.string "office" t.integer "user_id" t.datetime "created_at", :null => false t.datetime "updated_at", :null => false t.integer "province_id" end ```