Coding Tidbits

Cube Root is an exclusive Ruby on Rails Consultancy. Find our programming ramblings here.

Model Relations on Rails Console

We know that rails console is useful for testing ruby syntax and model queries. Also it is useful for changing server-side data without touching the website.

On Rails console, we can view Model Associations.

There is a simple method reflect_on_all_associations, by using which we get the model associations array on console.

irb(main):001:0> Patient.reflect_on_all_associations.each do |a|
irb(main):002:1* puts "#{a.macro} => #{a.name}"
irb(main):003:1> end

has_many => tsh_reports
has_many => hbs_ag_reports

=> [#<ActiveRecord::Reflection::AssociationReflection:0x007fd4b4209a78 @macro=:has_many, @name=:tsh_reports, @scope=nil, @options={}, @active_record=Patient(no database connection), @plural_name="tsh_reports", @collection=true>, #<ActiveRecord::Reflection::AssociationReflection:0x007fd4b4bfdd90 @macro=:has_many, @name=:hbs_ag_reports, @scope=nil, @options={}, @active_record=Patient(no database connection), @plural_name="hbs_ag_reports", @collection=true>]

That's it! We have done.