CODEWITHSUNDEEP
ruby-on-railsrubyruby-on-rails-3activerecord
Kevin Hughes
Kevin Hughes

Reputation: 600

How do I return a binding from an ActiveRecord record?

I have some code stored in a string and I want to run it in the context of a specific record.

I want to do something like this:

class Dog < ActiveRecord::Base
  # has the attributes name and age
end

a_dog = Dog.first

some_code = "puts name"

eval some_code, a_dog.get_binding

That would print the first dogs' name. I know the get_binding method isn't right but I think the name demonstrates what I want to do.

Also, I know I shouldn't do this, I just want to know if there's a way I can :)

Upvotes: 0

Views: 65

Answers (1)

Flexoid
Flexoid

Reputation: 4245

You can use instance_eval method which evaluates a code string within the context of the receiver.

a_dog = Dog.first
a_dog.instance_eval('puts name')
snuppy
 => nil

Upvotes: 3

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