Find out the type of variable in ruby on Rails

Question

I have a form in search Rails that can receive a zip code or the name of a street, so I need to know what type of variable the user is entering, if it is numbers, I do a search by zip code, if it is text, I do a search by street name

Answer 1

It is possible using Regular Expression, checks for character types or character patterns.

Ex:

[0-9] - Apenas numeros
[a-zA-Z] - Alfabeto com letras minusculas e maiusculas

Search for variations in case you need to assemble specific patterns, it is very useful in certain scenarios.

https://guru-sp.github.io/tutorial_ruby/expressoes-regulares.html

http://diegorubin.com/2011/04/16/utilizando-expressoes-regulares-em-ruby

http://ruby-doc.org/core-2.2.0/Regexp.html

Answer 2

To find out the type of the variable use the method kind_of?, because it returns a boolean value.

use that way:

variável.kind_of? tipo

Example to find out if "x" is integer type:

x.kind_of?Integer

Answer 3

Perhaps making a comparison using the .class I think the .class can help you by giving you the information of the required variable, so just make the comparison!

Answer 4

irb(main):006:0> Integer = 1
(irb):6: warning: already initialized constant Integer

=> 1

irb(main):007:0> 1.class

=> Fixnum

This would be a way to find out the type of the variable.