Dynamically get Object's attribute

Question

How do I dynamiclly get an attribute value for an activerecord object?

for example I have a variable named attr_name.
I want to do something like this

Answer 1

send is the method you're looking for.

Answer 2

If doing this using send

address = person.send("function_name" + "attr_name")

Answer 3

Either use person.attributes[attr_name] or person.read_attribute(att_name), or even shorter then this is person[attr_name].