Sorting an ActiveRecord relation by PostgreSQL hstore value with Arel
How to use Arel in Rails in order to sort by a PostgreSQL hstore valueFor the past 2 days I was struggling with sorting an ActiveRecord relation by a value in a hstore hash. I currently work on a project that is a product catalog. Every attribute of the Product model had to be translated into multiple languages. So I picked the hstore_translations gem. In a nutshell the gem stores translations of
ActiveRecord Eager Loading with Query Objects and Decorators
We recently came across an interesting problem, which was discussed in a previous post, Postgres Window Functions: We want to get each post’s three most recent comments. As discussed, you can’t use simple eager loading: Post.order(created_at: :desc).limit(5).includes(:comments) This will load every comment for each post. When there are many comments per post, this quickly becomes unacceptable. Sta
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