I have a model User who has many Posts
I now want a user to be able to group one of his posts with any posts
from any user.
so i have a Groups model. in the groups database i have:
user_id and post_id
Groups:
has_one :user
has_one :post
Posts:
has_many :groups
so i pull out a post from a user. how can i find what other posts are
grouped to that post?