On Monday, July 29, 2013 2:15:38 PM UTC-4, Ruby-Forum.com User wrote:
>
> I was working on this rails tutorial:
> "http://guides.rubyon...ng_started.html"; and than I got to the part that
> you are supposed to show the title and data for an individual post (5.7)
> and got an error when it was supposed to show the data, so I put
> @post.inspect into /app/views/posts/show.html.erb and I got nil, and
> same with the index page where it lists all of the posts, but I checked
> and the data is in the database correctly.(in case this helps, on part
> 4.3 where you're supposed to uncomment # root to: "welcome#index", the
> file said #root "welcome#index" instead, even though I'm using rails 4.0
> and ruby 2.0) Here's my controller file:
>
> class PostsController < ApplicationController
> def new
> end
> def create
> @post = Post.new(post_params.permit(:title, :text))
> @post.save
> redirect_to @post
> end
> private
> def post_params
> params.require(:post).permit(:title, :text)
> end
> def show
> @post = Post.find(params[:id])
> end
> def index
> @posts = Post.all
> end
> end
>
> here's the error:
>
> NoMethodError in Posts#show
> Showing /home/hiram/rails/meme/app/views/posts/show.html.erb where line
> #3 raised:
> undefined method `title' for nil:NilClass
> Extracted source (around line #3):
> 1 <p>
> 2 <strong>Title:</strong>
> 3 <%= @post.title %>
> 4 </p>
> 5
> 6 <p>
> Rails.root: /home/hiram/rails/meme
>
> --
> Posted via http://www.ruby-forum.com/.
>
The following code:
private
def post_params
params.require(:post).permit(:title, :text)
end
must be at the end of the file. Once you declare private, everything
defined after that will be considered private unless you change the
declaration. The way you have this coded, the methods show and index will
now be private and not available to the view.
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