Question

I need to validate X number of fields. Each field is named “testFieldX”, where X is any real number greater that 1.

So basically what I have in a form are fields with names:

testField1
testField2
testField3

etc.

I need to iterate over all of them and validate.

Let’s assume I have 5 fields.

Then

<cfloop index="i" from="1" to="5">
    <cfif form.testField & i EQ "">
        Show error
    </cfif>
</cfloop>

However it does not work. I get an error that the field name “testField” does not exists, which is true (only testField1+) exist. It seems like the things are not concatenating. Does it work only with strings?

How can I solve this problem?

Answer 1

The syntax you’re after is:

<cfif form["testfield" & i] EQ "">

That will concatenate the strings as you’re expecting.