refactor rails if else statement with to a single line with return?

Question

Im refactoring my older code parts, have lots of returns with multi line like:

if ...
 return false
else
 return true
end

How could one refactor to use a single line and return true or false?

possible duplicate of [How do I use the conditional operator (? :) in Ruby?](http://stackoverflow.com/questions/4252936/how-do-i-use-the-conditional-operator-in-ruby) — Rob Hruska, May 29 '13 at 09:37

score 8 · Accepted Answer · answered May 29 '13 at 09:36

8

Say foo is what is on the right of your if, then you can replace with:

foo ? false : true

This is known as the ternary operator.

Notice that in your case you could simply do:

!foo

answered May 29 '13 at 09:36

apneadiving

thank you, so something like if request.env["HTTP_REFERER"] ? redirect_to :back : redirect_to root_path – Rubytastic May 29 '13 at 09:38
4

`redirect_to request.referer ? :back : root_path` – May 29 '13 at 09:41

score 0 · Answer 2 · answered Aug 10 '18 at 17:29

0

Following previous answer, but using return indeed:

return foo ? false : true

answered Aug 10 '18 at 17:29

Fabián Contreras

2 Answers2