CODEWITHSUNDEEP
activerecordruby-on-rails-3arel
Anthony H
Anthony H

Reputation: 347

Why ARel query is returned as ActiveRecord::Relation class instead of parent class?

I have a class: 

class Technician < ActiveRecord::Base  
  scope :named, lambda {|name| where(["first_name LIKE ?", "%#{name}%"])}  
end

In rails console, when I do the following query: 

technician = Technician.named("john")  
technician.class => ActiveRecord::Relation and not Technician

this matters because I get a no method error when I try to access the class attributes: 

technician.id => no method error

what am I doing wrong?

Upvotes: 1

Views: 701

Answers (1)

Chandra Patni
Chandra Patni

Reputation: 17587

Arel returns ActiveRecord::Relation so that it can defer the execution to the last moment and provide better composability.

Technician.named("john").first instead of Technician.named("john") to get the technician.

Upvotes: 4

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