Question

I have following Association;

class Package < ActiveRecord::Base
  has_many : modules
end

class Module < ActiveRecord::Base
  belongs_to : package
end

And I use this to get records from the join;

@recs = Package.includes(:modules).where( 'name' => 'abc-pkg').all

But the resultset, @recs, include only parent table’s (package) columns. How can I get child (module) table’s column?

PS: Using PostgreSQL 9.1 and gem ‘pg’ adapter

Thank you.

Answer 1

That is actually correct. You will not see the child’s columns inside the @recs variable when inspecting it. The point of the includes method is to avoid additional queries when iterating over the packages and asking for package.modules.