# A few active\_merchant questions

**URL:** <https://www.ruby-forum.com/t/a-few-active-merchant-questions/79551>\
**Category:** Rails\
**Created:** [December 16, 2006, 9:50am UTC](https://www.ruby-forum.com/t/a-few-active-merchant-questions/79551 "2006-12-16T09:50:20Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![nappin](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/n/f475e1/32.png) [@nappin](https://www.ruby-forum.com/u/nappin)\
**Post date:** [December 16, 2006, 9:50am UTC](https://www.ruby-forum.com/t/a-few-active-merchant-questions/79551/1 "2006-12-16T09:50:20Z")

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Hi,  
Just getting started using the active\_merchant plugin and had a few  
questions for those of you using it out there.

First off, I’m using the Trustcommerce payment gateway and they require  
that you set a parameter named ‘avs’ to ‘y’ if you want the transaction  
to perform an avs check first. How do I set this in the activemerchant  
authorize method? There’s an options hash that it takes but after  
looking at the source it doesnt seem to do anything for trustcommerce.

2nd question: I’m using the creditcard valid? method to do my form  
validation, is there any option to get it to throw an error if  
verification\_code is invalid/blank in the form? or do I need to do it  
manually in my own code? By default it doesn’t seem to care if its blank  
or not.

3rd question: is there a preferred method of supplying the address  
information for avs in active\_merchant? I noticed a private add\_address  
method in the gateway code for trustcommerce but can’t figure out how to  
use it properly.

Thanks so much for the help!  
-Ray