Advanced ActiveRecord tutorials

[Ganesh Ranganathan]

Any recommendations for good advanced tutorials on ActiveRecord in Rails4?

 

I'm interested in joins, group, counts especially for deep associations.

Thanks,

Ganesh

[Steve Robinson]

Hi Ganesh,

The official Ruby on Rails guides has a pretty extensive coverage of ActiveRecord http://guides.rubyonrails.org/active_record_querying.html

If you want to achieve something specific, then you'll find a lot of tutorials for that. And as always you can ask here as well :)

Hope this helps.

--

Steve Robinson

about.me/steverob  

[mike]

It's not really a tutorial, but if you really want an advance discussion and in-depth coverage of ActiveRecord, I would recommend The Rails 4 Way which, in my opinion, is the best reference for back end development on Rails.  I don't have any connection to the book or its authors, but I use it a lot.

[R. Francky]

Here's a list of articles on advanced ActiveRecord, quite old but I think they are still relevant.

http://railscasts.com/episodes/215-advanced-queries-in-rails-3?view=asciicast
http://railscasts.com/episodes/239-activerecord-relation-walkthrough?view=asciicast
http://erniemiller.org/2010/03/28/advanced-activerecord-3-queries-with-arel/
http://learntribe.com/kevinelliott/ruby_on_rails_advanced_activerecord

Have a nice day and good reading !

Cheers