CFFORM has a cool sample of a slush control, basically two selects where you can send items to the left and right. This was designed by Ron Pasch from Prisma-IT. I took his code and packaged it up into a nice little custom tag. You can now have this control on your form without any modification to your cfform tag. You simply add:
<cf_slush name="users" query="#data#" valuecol="id" displaycol="name" colwidth="150" size="5" selected="3">
View Demo
You can download this code here. (I'll be adding it to My Tools in a few minutes.)
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I'm currently looking for my next role in developer evangelism and advocacy. I have a long history of helping companies work with developers and love to write, create demos, and present at conferences. You can find my resume to learn more and drop me an email (raymondcamden@gmail.com) to reach out.