Rails: find_by_sql and virtual column

Question

I want to display a list with tags plus the number of elements (in my example \"Tasks\") for each tag.

For this purpose I created the following method in my Tag mode

Answer 1

The count is there, you just can't see it since taskcount is not an attribute Rails creates for that class Task, because it isn't a column that it can see. You have to use the attributes call to find it. Sample:

class Tag < ActiveRecord::Base
  ...
  def taskcount
    attributes['taskcount']
  end
end

Tag.find_with_count.each do |t|
  puts "#{t.name}: #{t.taskcount}"
end