Checking dynamically named checkboxes.

[Guest]

I have a form with checkbox fields "Check1", "Check2", "Check3, etc. After submit, I want to loop through to find which are checked. Something like:

cfloop index="1" from="1" to="4"

cfif parameterexists (check#i#)
do stuff
/cfif

/cfloop

Except CF isn't happy with this.
(Yes, I know parameterexists has been deprecated. That's not the problem.)

Do you do this with "evaluate"? What is the right cfif command? Help would be appreciated!

thanks!
B.

[Dan_Bracuk · Accepted solution]

This sort of thing is almost always simpler if you give all your checkboxes the same name but different values. Then you either have a list or nothing at all. You can use isDefined("form.nameofcheckbox") to check.

[Guest]

Why didn't I think of that? Thanks, Dan!

You wouldn't happen to have the cfif statement to check the box for a certain value handy? I'll google it!

[Newsgroup_User]

BrettCPI wrote:

> Do you do this with "evaluate"? What is the right cfif command? Help would
> be appreciated!
>


If you do not go with Dan's suggestion and a single checkbox name with a
list of values you would use array notation and|or structKey exists to
work with this type of data.

<cfif structkKeyExists("form","Check" & i)>
<cfoutput>#form["check" & i]#</cfoutput>
</cfif>

[Dan_Bracuk]

use "coldfusion list functions" for your google search string.