Ruby on Rails NoMethodError in Articles#show - ruby-on-rails

Question

I keep getting a no method error. Why? How can I fix this?
NoMethodError in Articles#show
undefined method `photo' for #
I am using ruby on rails and I'm trying to use paperclip so i can upload photos on my app
part of my show file
<%= render #article.photos %> #source of error
<h3>Add a photo:</h3>
<%= render 'photos/form' %>
my photos controller
class PhotosController < ApplicationController
#Index action, photos gets listed in the order at which they were created
def index
#photos = Photo.order('created_at')
end
#New action for creating a new photo
def new
#photo = Photo.new
end
#Create action ensures that submitted photo gets created if it meets the requirements
def create
#article = Article.find(params[:article_id])
#photo = #article.photos.create(photo_params)
redirect_to article_path(#article)
end
def destroy
#article = Article.find(params[:article_id])
#photo = #article.photos.find(params[:id])
#photo.destroy
redirect_to article_path(#article)
end
private
#Permitted parameters when creating a photo. This is used for security reasons.
def photo_params
params.require(:photo).permit(:title, :image)
end
end
========= UPDATE =======
This is my
articles controller
class ArticlesController < ApplicationController
def new
#article = Article.new
end
def index
#articles = Article.all
end
def show
#article = Article.find(params[:id])
end
def create
#article = Article.new(article_params)
#article.save
redirect_to #article
end
def edit
#article = Article.find(params[:id])
end
def update
#article = Article.find(params[:id])
if #article.update(article_params)
redirect_to #article
else
render 'edit'
end
end
def destroy
#article = Article.find(params[:id])
#article.destroy
redirect_to articles_path
end
end
private
def article_params
params.require(:article).permit(:title, :text)
end
article model
class Article < ApplicationRecord
has_many :comments
end
I fixed it now, but now i have another no method error
undefined method `article_photos_path' for #<#:0x007f17f052d0a0>
Did you mean? article_path
<%= form_for([#article, #article.photos.build]) do |f| %> #source of error
<div class="form-group">
<%= f.label :image %>
<%= f.file_field :image, class: 'form-control'%>
</div>
<p>
<%= f.submit 'Upload Photo' %>
</p>
<% end %>
</p>
<% end %>

Answer 1

Being Photo another model so, you need to make the proper relationship:
class Article < ApplicationRecord
has_many :comments
has_many :photos
end
class Photo < ApplicationRecord
belongs_to :article
end
As I see in your photo_params, you don't have the article_id attribute then you must add it, running a migration:
$ rails g migration add_article_to_photos article:references
$ rails db:migrate
After that you should update them:
params.require(:photo).permit(:title, :image, :article_id)