Databases
StackOverflow2013
Postsdbo
PO
 

Note that there are some explanatory texts on larger screens.

plurals
  1. PO
    primarykey
    data
    text
    <p>You want to make a blog which has users , posts and comments, I see some differences between what you did and what I did it before when I was creating a blog also. I will tell you what I did (by editing the code of the files you posted in your question) then try it if it works with you :)</p> <p>1- routes.rb make it like this</p> <pre><code>resources :users resources :posts do resources :comments end </code></pre> <p>2- user.rb is fine no need to be modified</p> <p>3- post.rb also is fine</p> <p>4- comments.rb</p> <pre><code>belongs_to :post belongs_to :user </code></pre> <p>5- posts_controller.rb</p> <pre><code> def show @post = Post.find(params[:id]) @comment = Comment.new end </code></pre> <p>6- view/posts/show.html.erb ( this view should make you able to see the post and the comments and a box for the new comments, and a link to edit post and a link to the posts index )</p> <pre><code>&lt;p&gt;&lt;strong&gt;Title:&lt;/strong&gt;&lt;%= @post.title %&gt;&lt;/p&gt; &lt;p&gt;&lt;strong&gt;Text:&lt;/strong&gt;&lt;%= @post.text %&gt;&lt;/p&gt; &lt;h2&gt;Comments&lt;/h2&gt; &lt;%= render @posts.comments %&gt; &lt;h2&gt;Add a comment:&lt;/h2&gt; &lt;%= render "comments/form" %&gt; &lt;%= link_to 'Edit Post', edit_post_path(@post) %&gt; | &lt;%= link_to 'Back to Posts', posts_path %&gt; </code></pre> <p>7- comments_controller.rb ( don't forget to add the destroy method again )</p> <pre><code>class CommentsController &lt; ApplicationController before_filter :load_post def create @comment = @post.comments.build(params[:comment]) @comment.user_id = current_user.id if @comment.save redirect_to @post, notice: "Added comment." else render :new end end private def load_post @post = Post.find(params[:article_id]) end end </code></pre> <p>8- views/comments/_form.html.erb (just try to make it first in a simple way)</p> <pre><code>&lt;%= form_for([@post,@comment]) do |f| %&gt; &lt;p&gt; &lt;%= f.label :body %&gt;&lt;br /&gt; &lt;%= f.text_area :body %&gt; &lt;/p&gt; &lt;p&gt; &lt;%= f.submit %&gt; &lt;/p&gt; &lt;% end %&gt; </code></pre> <p>9- views/comments/_comment.html.erb</p> <pre><code>&lt;p&gt;&lt;strong&gt;Commenter:&lt;/strong&gt;&lt;%= comment.user.email %&gt;&lt;/p&gt; &lt;p&gt;&lt;strong&gt;Comment:&lt;/strong&gt;&lt;%= comment.body %&gt;&lt;/p&gt; &lt;p&gt;&lt;%= link_to 'Destroy Comment', [comment.post, comment],method: :delete, data: { confirm: 'Are you sure?' } %&gt; &lt;/p&gt; </code></pre> <p>I hope this work with you as it works with me, try it and let me know how it goes with you, i got my blog work from <a href="https://github.com/railscasts/229-polling-for-changes-revised/tree/master/blog-before" rel="nofollow">the before code for revised episode 229</a>.</p>
    singulars
    1. This table or related slice is empty.
    1. POcreate comments for nested routes
      singulars
      1. PTQuestion
    1. PTAnswer
    1. USMostafa Hussein
    1. USMostafa Hussein
    plurals
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. COthe thing is i don't have any problem when comments are nested once..it's when they are double nested that i'm having problem
      singulars
      1. PO
      1. USMandeep
    2. COwhat error appears when you test ?
      singulars
      1. PO
      1. USMostafa Hussein
    3. COwhen i try to show posts it shows undefined method `comments' for #<ActiveRecord::Relation:0x61f3338> and if i remove <% if @user.posts.comments.empty? %> <h2>Comments</h2> <%= render @posts.comments %> <% end %> it shows undefined method `model_name' for NilClass:Class
      singulars
      1. PO
      1. USMandeep
 

Querying!

 
Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

SQuiL has stopped working due to an internal error.

If you are curious you may find further information in the browser console, which is accessible through the devtools (F12).

Reload