create comments for nested routes - ruby-on-rails

Question

I'm trying to make a blog which has users, posts and comments. Each user can have many posts and many comments similarly each post can have many comments. I have successfully made the user and post sections but am having difficulty creating comments and then displaying them.
code:
routes.rb :
resources :users do
resources :posts do
resources :comments
end
end
user.rb :
has_many :posts, dependent: :destroy
has_many :comments, dependent: :destroy
post.rb :
belongs_to :user
has_many :comments, dependent: :destroy
comment.rb :
belongs_to :post, :user
I'm creating and displaying comments in the post's view itself so..
posts_controller.rb :
def show
#user = current_user
#post = Post.find(params[:id])
end
view/posts/show.html.erb :
<p><strong>Title:</strong><%= #post.title %></p>
<p><strong>Text:</strong><%= #post.text %></p>
<% if #user.posts.comments.empty? %>
<h2>Comments</h2>
<%= render #posts.comments %>
<% end %>
<h2>Add a comment:</h2>
<%= render "comments/form" %>
<%= link_to 'Edit Post', edit_user_post_path(#user.id,#post) %> |
<%= link_to 'Back to Posts', user_posts_path(#user.id) %>
comments_controller.rb :
class CommentsController < ApplicationController
def create
#user = current_user
#post = #user.posts.find(params[:post_id])
#comment = #user.posts.comments.create(params[:comment])
redirect_to user_post_path(#user.id,#post)
end
def destroy
#user = current_user
#post = #user.posts.find(params[:post_id])
#comment = #user.posts.comments.find(params[:id])
#comment.destroy
redirect_to user_post_path(#user.id,#post)
end
end
And the partials are:
views/comments/_form.html.erb :
<%= form_for([#user,#post,#comment]) do |f| %>
<p>
<%= #user.email %>
</p>
<p>
<%= f.label :body %><br />
<%= f.text_area :body %>
</p>
<p>
<%= f.submit %>
</p>
<% end %>
I think my form_for is not right here but I'm new to rails and I've also tried form_for(#user,#post,#post.comments.build) but that didn't work either.. Anyways here's another partial:
views/comments/_comment.html.erb:
<p><strong>Commenter:</strong><%= #user.email %></p>
<p><strong>Comment:</strong><%= comment.body %></p>
<p><%= link_to 'Destroy Comment', [comment.post, comment],method: :delete,
data: { confirm: 'Are you sure?' } %>
</p>
Again here I'm having trouble with link to...any suggestions would be great.

Answer 1

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 :)
1- routes.rb make it like this
resources :users
resources :posts do
resources :comments
end
2- user.rb is fine no need to be modified
3- post.rb also is fine
4- comments.rb
belongs_to :post
belongs_to :user
5- posts_controller.rb
def show
#post = Post.find(params[:id])
#comment = Comment.new
end
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><strong>Title:</strong><%= #post.title %></p>
<p><strong>Text:</strong><%= #post.text %></p>
<h2>Comments</h2>
<%= render #posts.comments %>
<h2>Add a comment:</h2>
<%= render "comments/form" %>
<%= link_to 'Edit Post', edit_post_path(#post) %> |
<%= link_to 'Back to Posts', posts_path %>
7- comments_controller.rb ( don't forget to add the destroy method again )
class CommentsController < 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
8- views/comments/_form.html.erb (just try to make it first in a simple way)
<%= form_for([#post,#comment]) do |f| %>
<p>
<%= f.label :body %><br />
<%= f.text_area :body %>
</p>
<p>
<%= f.submit %>
</p>
<% end %>
9- views/comments/_comment.html.erb
<p><strong>Commenter:</strong><%= comment.user.email %></p>
<p><strong>Comment:</strong><%= comment.body %></p>
<p><%= link_to 'Destroy Comment', [comment.post, comment],method: :delete,
data: { confirm: 'Are you sure?' } %>
</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 the before code for revised episode 229.

Answer 2

I got the answer here it is:
posts_controller:
def show
#user = current_user
#post = #user.posts.find(params[:id])
#comment = #post.comments.new
end
show.html.erb:
<p><strong>Title:</strong><%= #post.title %></p>
<p><strong>Text:</strong><%= #post.text %></p>
<% if !#post.comments.empty? %>
<h2>Comments</h2>
<%= render #comment %>
<% end %>
<h2>Add a comment:</h2>
<%= render "comments/form" %>
<%= link_to 'Edit Post', edit_user_post_path(#user.id,#post) %> |
<%= link_to 'Back to Posts', user_posts_path(#user.id) %>
comments_controller.rb:
def create
#user = current_user
#post = #user.posts.find(params[:post_id])
#comment = #post.comments.create(params[:comment])
redirect_to user_post_path(#user.id,#post)
end
comment's partial
_form.html.erb:
<%= form_for([#user,#post,#comment]) do |f| %>
<p><%= #user.email %></p>
<p><%= f.label :body %><br />
<%= f.text_area :body %>
</p>
<p><%= f.submit %></p>
<% end %>