# Auto Display

**URL:** <https://www.ruby-forum.com/t/auto-display/141489>\
**Category:** Ruby\
**Created:** [June 26, 2008, 11:10am UTC](https://www.ruby-forum.com/t/auto-display/141489 "2008-06-26T11:10:49Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![tornado](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/t/43a26b/32.png) [@tornado](https://www.ruby-forum.com/u/tornado)\
**Post date:** [June 26, 2008, 11:10am UTC](https://www.ruby-forum.com/t/auto-display/141489/1 "2008-06-26T11:10:49Z")

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Hello Everybody,  
With the help pf active scaffold i have created 3  
columns…lets say a,b,c.Now if enter the value in a and in b…then  
automatically it should show result in c.  
For e.g.  
a = 5  
b = 5  
Then automatically the value in c should be displayed as 10.

Can u suggest me how should i proceed with the same.

Regards,

Amit K.