ruby on rails - How do I convert a string to a class method?

Question

This is how to convert a string to a class in Rails/Ruby:

p = "Post"
Kernel.const_get(p)
eval(p)
p.constantize

But what if I am retrieving a method from an array/active record object like:

Post.description

but it could be

Post.anything

where anything is a string like anything = "description".

This is helpful since I want to refactor a very large class and reduce lines of code and repetition. How can I make it work?

Answer 1

Post.send(anything)