NoMethodError - Rails - Can't track down the problem - ruby-on-rails

Question

I am currently working on a blog app. The blog has users, stories, and favourites. 1 user can have many stories and many favourites, and one story can have many favourites (1 from each user) too.
When I try to save a new favourite on the front end (the create route), I receive the following error:
undefined method `favourites' for #<Class:0x00007f850e24e290>
Extracted source (around line #11):
9 def create
10 #story = Story.find(params[:story_id])
11 #favourite = Story.favourites.new
12 #favourite.user = #current_user
13 #favourite.save
14 redirect_to story_path(#story)
I feel like this should be defined, and is almost the same way that I am using create with other controllers. Based on what I've found so far, I suspect that it is because the favourites in Story.favourites.new is nested within the Story, but I haven't found a way to sort it out yet. I'm quite new to Rails, so apologies if the answer is obvious. Any guidance is appreciated! Thanks for your help!
Below are some of the pertinent files.
favourites_controller.rb
class FavouritesController < ApplicationController
before_action :logged_in, except: [:index, :show]
def show
end
def create
#story = Story.find(params[:story_id])
#favourite = Story.favourites.new
#favourite.user = #current_user
#favourite.save
redirect_to story_path(#story)
end
end
stories_controller.rb
class StoriesController < ApplicationController
before_action :logged_in, except: [:index, :show]
# Stories list page (also homepage)
def index
# Topic filtering
#topic = params[:topic]
#stories = if #topic.present?
Story.where(topic: #topic)
else
Story.all
end
end
def new
#story = Story.new
end
def create
#story = Story.new(form_params)
#story.user = #current_user
if #story.save
redirect_to root_path
else
render 'new'
end
end
def show
#story = Story.find(params[:id])
end
def destroy
#story = Story.find(params[:id])
#story.destroy if #story.user == #current_user
redirect_to root_path
end
def edit
#story = Story.find(params[:id])
redirect_to root_path if #story.user != #current_user
end
def update
#story = Story.find(params[:id])
if #story.user == #current_user
if #story.update(form_params)
redirect_to story_path(#story)
else
render 'edit'
end
else
redirect_to root_path
end
end
def form_params
params.require(:story).permit(:title, :topic, :body)
end
end
models/favourite.rb
class Favourite < ApplicationRecord
belongs_to :story
belongs_to :user
validates :story, uniqueness: { scope: :user }
end
models/story.rb
class Story < ApplicationRecord
has_many :comments
has_many :favourites
belongs_to :user
validates :title, presence: true
validates :body, presence: true, length: { minimum: 10 }
def to_param
id.to_s + '-' + title.parameterize
end
end
config/routes.rb
Rails.application.routes.draw do
resources :stories do
resources :comments
resource :favourite
end
resources :users
resource :session
root 'stories#index'
end

Answer 1

the issue is in this line:
11 #favourite = Story.favourites.new
it should be:
11 #favourite = #story.favourites.new
because the class Story itself doesn't have the favourites method but its instances do.