CODEWITHSUNDEEP
ruby-on-railsruby-on-rails-3
Yuli
Yuli

Reputation: 151

Rails no route matches

Thanks guys. I've solved the problem. It's because when I enter the posts/new page. The new action creates a dummy @post with nil attributes. Since the @post exists, the edit & delete link in the sidebar appears. However, the edit_post_path doesn't work because the @post.id is nil. Then the error occurs. So I just changed <% if @post %> to <% if @post && [email protected]? %> and it works. -- p.s. The rails error message is quite confusing.

I'm new to rails and just built a simple app and saw the error when I click a link to create a new post:
No route matches {:action=>"edit", :controller=>"posts"}

The rake routes result:

posts GET    /posts(.:format)              posts#index
      POST   /posts(.:format)              posts#create
new_post GET    /posts/new(.:format)          posts#new
edit_post GET    /posts/:id/edit(.:format)     posts#edit
 post GET    /posts/:id(.:format)          posts#show
      PUT    /posts/:id(.:format)          posts#update
      DELETE /posts/:id(.:format)          posts#destroy

The routes.rb file has resources :posts in it.

The link is : <li><%= link_to "New Post", new_post_path %></li>

The new & edit method in PostsController:

  def new
    @post = Post.new
  end
  def edit
    @post = Post.find(params[:id])
  end

I can show the post, edit the post and delete the post. But whenever I want to click the link to create a new post, the error occurs. I can't figure out why the new_post_path will leads to 'edit' path????

Could someone help me with this? If you need more codes plz tell me.

Thank you!

UPDATES

  1. Add the _sidebar.html.erb (sorry for the format, idk how to keep them as original, there are some normal nav, ul, li tags outside)

    • <%= link_to "Home", root_path %>
    • <%= link_to "About Me", about_path %>
      • <% if signed_in? %>
    • <%= link_to "New Post", new_post_path %>
      • <% if @post %>
    • <%= link_to "Edit Post", edit_post_path %>
    • <%= link_to "Delete Post", post_path(@post), method: "delete", confirm: "Are you sure to delete?" %>
      • <% end %>
    • <%= link_to "Sign Out", chulai_path, method: "delete" %>
      • <% end %>

  2. The new.html.erb

    <%= form_for @post do |f| %> <div class="field"> <%= f.text_field :title %> </div>

    <div class="field">
    <%= f.text_area :content, placeholder: "new post here..." %>
</div>

<div class="field">
    <%= f.select :public, [['Public', true], ['Private', false]] %>
</div>

<%= f.submit "Post", class: "btn" %>

    <% end %>

  3. I tried app.new_post_path, it shows /posts/new, i guess it's good.

Upvotes: 3

Views: 18626

Answers (2)

Ganesh Kunwar
Ganesh Kunwar

Reputation: 2653

try this,

edit_post_path(@post)

Upvotes: 0

Aleks
Aleks

Reputation: 5330

You are probably using edit_post_path in your new.html.erb for posts. It is complaining about no route matches as you haven't passed id of the edit post. But that shouldn't be in new view in the first place, so you probably need to delete that line - for editing post

Upvotes: 7

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