Is there any method to convert boolean variable to integer in ruby

Question

I have a ruby variable 'is_published'. I want to convert the value in 'is_published' to integer. Is there any method in ruby to do that?

if is_published == true
  is_published = 1
else
  is_published = 0
end

The above code works perfectly. Please help if there is any way to do this in a single line code.

May be like this: is_published = is_published? 1: 0; I don't know the syntax of ruby, I use this in js — Vedant Terkar
– Vedant Terkar, Commented Dec 10, 2014 at 8:48
You can use the conditional operator(? :). "is_published ? 1 : 0" is answer for you. — Fumu 7
– Fumu 7, Commented Dec 10, 2014 at 8:52
is_published = (is_published && 1) || (is_published || 0) is another way. — Cary Swoveland
– Cary Swoveland, Commented Dec 10, 2014 at 9:05
@spickermann, yes, that's better. My preference: is_published ? 1 : 0. Boring, perhaps, but reads the best. — Cary Swoveland
– Cary Swoveland, Commented Dec 10, 2014 at 10:01

Yahor Zhylinski · Accepted Answer · 2014-12-10 08:48:05Z

5

class TrueClass; def to_i; 1; end; end
class FalseClass; def to_i; 0; end; end

answered Dec 10, 2014 at 8:48

Yahor Zhylinski

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4 Comments

Cary Swoveland Over a year ago

Egad, Egor! That's all I wanted to say.

Sergio Tulentsev Over a year ago

This is probably too global for my taste :)

webster Over a year ago

Accepting this answer, but i would like to use is_published = (is_published && 1) || (is_published || 0)

Max Williams Over a year ago

I agree with @SergioTulentsev. Is the reason for doing this that you're using a database which stores booleans as 0 & 1 (eg MySQL)? If so then it would be better to hook into Rails' db "translators" to do this - then it will be db-agnostic.

Flexoid · Accepted Answer · 2017-04-12 10:49:07Z

2

# using logical operators
is_published = is_published && 1 || 0

# using ternary operator
is_published = is_published ? 1 : 0

answered Apr 12, 2017 at 10:49

Flexoid

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