has_many comments, belongs to post

rubyonrails-talk
1

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

2

Can I suggest you work through the rails guides at http://guides.rubyonrails.org/. Start with Getting Started and work through them.

Also an excellent tutorial is being developed at http://www.railstutorial.org/

Colin

3

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.

4

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

5

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

6

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

David, Ryan Bates 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

Good luck,

-Conrad