I have a Post model that has many comments
class Post < ApplicationRecord
has_many :comments
end
How do I get distinct posts that have comments excluding the posts that do not have comments?
I believe that Post.joins(:comments).distinct("posts.*") does the job.
Is there any better alternative?
I emphasize that the result should not have duplicate entries of posts, which is what happens when we join with comments (one-to-many relationship).
Looking at this again, and considering Mark's comment to my original solution, the simplest solution may just be to drop the "posts.*" from your original.
Post.joins(:comments).distinct
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