# Has\_many comments, belongs to post **URL:** \ **Category:** Rails\ **Created:** [April 3, 2010, 5:35am UTC](https://www.ruby-forum.com/t/has-many-comments-belongs-to-post/186262 "2010-04-03T05:35:04Z")\ **Posts on this page:** 6\ **Page:** 1
**Author:** ![davidz101](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/d/f0a364/32.png) [@davidz101](https://www.ruby-forum.com/u/davidz101)\ **Post date:** [April 3, 2010, 5:35am UTC](https://www.ruby-forum.com/t/has-many-comments-belongs-to-post/186262/1 "2010-04-03T05:35:04Z")
I made a posts scaffold, and a comments scaffold Now i want to link the two of them together by – Post– has\_many :comments and comments- belongs\_to :post After that, I have no idea what to do in the controller or form for my comments What do i need to change in the comments controller and form so every comment that gets created is assigned to a post? Btw, i already have a post\_id:integer column in my comments table I REALLY NEED HELP!! thanks a lot ---
**Author:** ![davidz101](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/d/f0a364/32.png) [@davidz101](https://www.ruby-forum.com/u/davidz101)\ **Post date:** [April 3, 2010, 9:44am UTC](https://www.ruby-forum.com/t/has-many-comments-belongs-to-post/186262/2 "2010-04-03T09:44:21Z")
On 3 April 2010 04:33, David Z. [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) wrote: > I REALLY NEED HELP!! thanks a lot Can I suggest you work through the rails guides at [http://guides.rubyonrails.org/](http://guides.rubyonrails.org/). Start with Getting Started and work through them. Also an excellent tutorial is being developed at > **[Ruby on Rails Tutorial](https://www.railstutorial.org/)** > > Since its initial publication in 2010, the Ruby on Rails Tutorial has been one of the leading introductions to web development. In this bestselling tutorial, you’ll learn how to develop and deploy real, industrial-strength web applications with Ruby... Colin ---
**Author:** ![davidz101](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/d/f0a364/32.png) [@davidz101](https://www.ruby-forum.com/u/davidz101)\ **Post date:** [April 3, 2010, 2:28pm UTC](https://www.ruby-forum.com/t/has-many-comments-belongs-to-post/186262/3 "2010-04-03T14:28:11Z")
I think you have already set up the has\_many relationship. That is all it takes. Now you can display comments below every post by using a selection operation matching the post\_id colums in both tables. something like… find all where post\_id = post\_post hope you got it. ---
**Author:** ![davidz101](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/d/f0a364/32.png) [@davidz101](https://www.ruby-forum.com/u/davidz101)\ **Post date:** [April 3, 2010, 6:45pm UTC](https://www.ruby-forum.com/t/has-many-comments-belongs-to-post/186262/4 "2010-04-03T18:45:08Z")
hey guys, thanks for the replies But those tutorials still dont tell you what to do in the contrller or form view for my comments I know i need to change something in the CREATE action of my comments controller, so every comment that is created gets assigned to a post. What exactly is it? Thanks ---
**Author:** ![davidz101](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/d/f0a364/32.png) [@davidz101](https://www.ruby-forum.com/u/davidz101)\ **Post date:** [April 4, 2010, 9:52am UTC](https://www.ruby-forum.com/t/has-many-comments-belongs-to-post/186262/5 "2010-04-04T09:52:57Z")
On 3 April 2010 17:44, David Z. [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) wrote: > hey guys, thanks for the replies > > But those tutorials still dont tell you what to do in the contrller or > form view for my comments There are many tutorials out there that show how to make a basic blog with comments. Try google for rails tutorial blog. Colin ---
**Author:** ![davidz101](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/d/f0a364/32.png) [@davidz101](https://www.ruby-forum.com/u/davidz101)\ **Post date:** [April 4, 2010, 10:07am UTC](https://www.ruby-forum.com/t/has-many-comments-belongs-to-post/186262/6 "2010-04-04T10:07:01Z")
On Fri, Apr 2, 2010 at 8:33 PM, David Z. [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) wrote: > I REALLY NEED HELP!! thanks a lot David, Ryan B. has redone the classic Rails blog screencast which answers your your question(s) quite nicely. Thus, you can find the screencast here and following along: [http://media.rubyonrails.org/video/rails\_blog\_2.mov](http://media.rubyonrails.org/video/rails_blog_2.mov) Good luck, -Conrad