# Validates\_inclusion\_of method dealing with array

**URL:** <https://www.ruby-forum.com/t/validates-inclusion-of-method-dealing-with-array/90361>\
**Category:** Rails\
**Created:** [March 28, 2007, 3:28am UTC](https://www.ruby-forum.com/t/validates-inclusion-of-method-dealing-with-array/90361 "2007-03-28T03:28:37Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![guest](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/g/8dc957/32.png) [@guest](https://www.ruby-forum.com/u/guest)\
**Post date:** [March 28, 2007, 3:28am UTC](https://www.ruby-forum.com/t/validates-inclusion-of-method-dealing-with-array/90361/1 "2007-03-28T03:28:37Z")

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Hello,

Im working through the agile book and ran across a line which I dont  
understadn how it works exactly.

validates\_inclusion\_of :pay\_type, :in =\> PAYMENT\_TYPES.map {|disp,  
value| value }

Could someone please explain what this part does: {|disp, value| value }

Is it only looking at the second value in the array?

Thanks in advance!