ruby on rails - Creating assoc record in HABTM through -

models:

cities.rb:

has_many :cities_users has_many :users, :through => :cities_users 

i have habtm (through) between cities , users. want view cities associated user. here's have , error is:

users.rb

has_many :cities_users has_many :cities, :through => :cities_users 

controller:

@user = user.find(current_user.id) @users_cities = @user.cities 

i have written migration creates join table:

create_table "cities_users", :id => false, :force => true |t|    t.integer "user_id"    t.integer "city_id" end 

this error (relating second line of controller code):

uninitialized constant user::citiesuser 

i'm having similar problems creating city associated user too.

many thanks.

you should create new model if want use has_many :through association.
please, consider using has_and_belongs_to_many direct many-to-many connection no intervening model.

for details can read http://guides.rubyonrails.org/association_basics.html#choosing-between-has-many-through-and-has-and-belongs-to-many.