ruby on rails - Setup so users can follow(bookmark) other users -

i have created 2 different sets of coding suppose allow user follow (bookmark) user. example user follows user b, c, & d. user goes favorites page , lists users they're following (b,c & d). 1 way follow. code created did not perform action of following user, decided follow railstutorial twitter following concept. getting "uninitialized constant relationshipscontroller". wrong routes.

can take , perhaps point out wrong?

on side note, feels lot of coding simple...even when doing myself without following tutorial. want users able bookmark users page url, have saved favorites page (essentially bookmark page) , give them option remove bookmark. think database wouldn't required this.

routes:

  resources :sessions,      only: [:new, :create, :destroy]   resources :relationships, only: [:create, :destroy]   resources :users         'settings', on: :member     end 

user model:

      has_many :notifications       has_many :users, dependent: :destroy       has_many :relationships, foreign_key: "follower_id", dependent: :destroy       has_many :followed_users, through: :relationships, source: :followed       has_many :reverse_relationships, foreign_key: "followed_id", class_name: "relationship", dependent: :destroy       has_many :followers, through: :reverse_relationships, source: :follower    def following?(other_user)     relationships.find_by(followed_id: other_user.id)   end    def follow!(other_user)     relationships.create!(followed_id: other_user.id)   end    def unfollow!(other_user)     relationships.find_by(followed_id: other_user.id).destroy!   end 

i'd go route:

resources :sessions,      only: [:new, :create, :destroy] resources :users     'settings', on: :member     post 'follow', on: :member    post 'unfollow, on: :member  end 

in users controller:

def follow   friend = user.find params[:user_id]   current_user.follow! friend unless current_user.following? friend   redirect_to friend end  def unfollow   friend = user.find params[:user_id]   current_user.unfollow! friend   redirect_to friend end 

and when displaying user want follow/unfollow

<% if current_user.following? @user %>   <%= link_to 'bookmark', follow_user_path(user_id: @user.id), method: :post %> <% else %>   <%= link_to 'remove bookmark', unfollow_user_path(user_id: @user.id), method: :post %> <% end %>