conditional chaining in ruby

Question

Is there a good way to chain methods conditionally in Ruby?

What I want to do functionally is

if a && b && c
 my_object.some_method_b         


        

Answer 1

If you're using Rails, you can use #try. Instead of

foo ? (foo.bar ? foo.bar.baz : nil) : nil

write:

foo.try(:bar).try(:baz)

or, with arguments:

foo.try(:bar, arg: 3).try(:baz)

Not defined in vanilla ruby, but it isn't a lot of code.

What I wouldn't give for CoffeeScript's ?. operator.