ruby on rails - ActiveRecord siblings in many-to-many relationship -


I'm working on this one degree, but I'm looking for some inputs for inquiring in siblings

Consider the following sections 

  class Post & lt; ActiveRecord :: Base has_many: post_categories has_many: categories, via = & gt; : Postcabins end class category & lt; ActiveRecord :: Base has_many: post_categories has_many: Posts, via = & gt; : Post_categories end

By definition, there may be several categories in a post, what do I need for this to show the "related posts" area on the site? As I mentioned earlier, I have a working version, which is just to do the following: 

  Post.find (id ,: include = & gt; {categories: = & Gt ;: posts}) < 
 Any thoughts are appreciated  
  
  
  < P> 
 
 The only problem is that I see what you already have, it is possible that you have all the posts Do not want to return a category with a post.  
  @ post = post.fund param [[id] @related_posts = post.find (: all ,: joins = & gt ;: post_categories, select = & gt; "Posts.id" ,: Group = & gt; "posts.id" ,: Order = & Gt; "post_category_count desc")  
 
 This will send the first relevant post, i.e. who have the most common categories , And you can either limit the results or add paginated.
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