How to loop over Attributes?

[philcha]

I'm trying to build a dynamic form with several instances of:

<input type=&quot;text&quot; name=&quot;#variable_1#&quot; value=&quot;#variable_2&quot;>

where variable_1 consists of a prefix plus a code (e.g. product code).
I want to follow Fusebox in this app, so the first thing I do is converts all the URL and Form variables to Attributes. When processing this form, how can I find the names of the Attributes-scoped variables which contain the values? The Attributes' names will vary because the codes come from a database query, e.g. on one occurrence of the page they might be
Prod_45, Prod_78
and in another occcurrence they might be
Prod_34, Prod_85, Prod_102
If someone does answer this, can he/ she please state what versions of CF support the technique he / she recommends.
Thanks.

 

[GunJack]

I normally recommend a different approach but since these come from a database query, I think a different approach is required.

When you generate the form, create a variable called &quot;varList&quot; and set it to &quot;&quot;. Each time you create a dynamic form variable, do a <cfset varList = listappend(varList,&quot;#variable_1#&quot>. This will create a comma delimited list of variable names. Then just pass this variable &quot;varList&quot; as a hidden form variable.

In the receiving script, you can loop through these like this:

<cfloop index=&quot;x&quot; list=#varList#>
<cfif isdefined(&quot;#x#&quot>
do whatever you want with it like <cfset myNewVar = evaluate(&quot;#x#&quot>
</cfif>
</cfloop>

This should work in CF 3.0 and up.

Hope this helps,
GJ

 

[philcha]

Thanks, GunJack! Your suggestion did the trick.