Hello, I'm new at Ruby on Rails, I'm using : -Ubuntu 14.04 LTS -Rails 4.1.2 -Ruby 2.1.2p95 -rvm 1.25.27
I'm actually following the rails guides : http://guides.rubyonrails.org/v4.0.6/getting_started.html#getting-up-and-running Everything was going well until the point : 5.7 Showing points. I have checked my files several times and I can't figure out where is my mistake, I can submit a post and then there is no display I get the error : NoMethodError in Posts#show Showing */home/jeremy/projet/blog/app/views/posts/show.html.erb* where line *#3* raised: undefined method `title' for nil:NilClass Extracted source (around line *#3*): 123456 <p> <strong>Title:</strong> <%= @post.title %> </p> <p> Following you'll find my files : -config/routes.rb Rails.application.routes.draw do get 'welcome/index' # The priority is based upon order of creation: first created -> highest priority. # See how all your routes lay out with "rake routes". resources :posts # You can have the root of your site routed with "root" root 'welcome#index' # Example of regular route: # get 'products/:id' => 'catalog#view' # Example of named route that can be invoked with purchase_url(id: product.id) # get 'products/:id/purchase' => 'catalog#purchase', as: :purchase # Example resource route (maps HTTP verbs to controller actions automatically): # resources :products # Example resource route with options: # resources :products do # member do # get 'short' # post 'toggle' # end # # collection do # get 'sold' # end # end # Example resource route with sub-resources: # resources :products do # resources :comments, :sales # resource :seller # end # Example resource route with more complex sub-resources: # resources :products do # resources :comments # resources :sales do # get 'recent', on: :collection # end # end # Example resource route with concerns: # concern :toggleable do # post 'toggle' # end # resources :posts, concerns: :toggleable # resources :photos, concerns: :toggleable # Example resource route within a namespace: # namespace :admin do # # Directs /admin/products/* to Admin::ProductsController # # (app/controllers/admin/products_controller.rb) # resources :products # end end -app/controllers/posts_controller.rb class PostsController < ApplicationController def new end def create @post = Post.new(post_params) @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 end -app/views/posts/new.html.erb <h1>New Post</h1> <%= form_for :post, url: posts_path do |f| %> <p> <%= f.label :title %><br> <%= f.text_field :title %> </p> <p> <%= f.label :text %><br> <%= f.text_area :text %> </p> <p> <%= f.submit %> </p> <% end %> -db/migrate/20140630133544_create_posts.rb class CreatePosts < ActiveRecord::Migration def change create_table :posts do |t| t.string :title t.text :text t.timestamps end end end -app/views/posts/show.html.erb <p> <strong>Title:</strong> <%= @post.title %> </p> <p> <strong>Text:</strong> <%= @post.text %> </p> So if you can tell me what's wrong I'll be very happy, because I really don't get it. Thanks. -- You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/rubyonrails-talk/4ca41298-1a4f-4730-8cc1-bf928a8c28b9%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
