At 05:14 PM 10/26/99 -0500, Ben Glazer wrote:
I want to verify that certain fields in a form have been entered. Here's a code snippet I've tried to use:
<dtml-let required="('first', 'last', 'email')"> <dtml-in required> <dtml-var sequence-item> exists </dtml-if> </dtml-in> </dtml-let>
Naturally, I get an error when this is executed, since Python interprets "sequence-item" in the dtml-if as subtracting item from sequence. I thought <dtml-var sequence-item> might work, but apparently that sort of thing is not allowed in an expression.
Is there a way to access the value of sequence-item in an expression? If not, how could I go about verifying that form fields are entered correctly?
Use: <dtml-if expr="REQUEST.form[_['sequence-item']]">
As a side note, is there any good reason that sequence-item isn't spelled sequence_item? Just curious...
There are some reasons, but "good" is a relative question. One reason is that it makes it easier for the special mapping object created by the "in" tag to recognize special variables. This question is probably becoming a FAQ that should be included in DTML docs.