[Zope] REQUEST weirdness . . .

[Christopher J. Kucera]

'ello.

Bear with me on this one; I'm having worlds of problems coming up
with any kind of coherent way of expressing the problem. :)

I have a form which contains the following:

<input type=text name="street.address1:record">
<input type=text name="street.address2:record">
<input type=text name="street.city:record">
<input type=text name="street.state:record">
<input type=text name="street.zip:record">

To parse this data, I would ordinarily just use a dtml-with:

<dtml-with street>
  <dtml-var address1>, etc, etc, etc
</dtml-with>

No problem.  This, however, is where things get interesting.
I'm passing the data from this form to a "confirmation"
page.  The data from the first form will be simply put into a bunch
of "hidden" fields, where the user will be prompted to REALLY do what
they were doing, or cancel back to the original form.

Now, I don't want to have to re-code the confirmation page every
time I add a new value to the main form, or remove an input for
whatever reason.  What I figured I would do is the following:

<dtml-in "REQUEST.form.keys()">
  <input type=hidden
         name="<dtml-var sequence-item>"
         value="<dtml-var "REQUEST.form[_['sequence-item']]">">
</dtml-in>

This works fine for all the values in the form which aren't using
the ":record" tag, but obviously for my address, I'll 
need to iterate through it.  ie:

<dtml-in "REQUEST.form['street'].keys()">
  <input type=hidden
         name="street.<dtml-var sequence-item>:record"
         value="<dtml-var "REQUEST.form['street'][_['sequence-item']]">">
</dtml-in>

( In the original code, "street" wasn't hardcoded, and I just wrapped
  that statement around a dtml-try, where the except clause was my
  original dtml-in. )

This code doesn't work.  Upon closer inspection, the following line
was the culprit:

  <dtml-in "REQUEST.form['street'].keys()">

Upon even closer inspection, *none* of the dictionary functions would
work.  Not even <dtml-var "REQUEST.form['street']['address1']">

Then I decided it was time to just see exactly what was in the object.
<dtml-var "REQUEST.form['street']"> yielded the following results
(I had just entered sequential numbers for all five inputs):

address1: 1, address2: 2, city: 3, state: 4, zip: 5

Here's the output of <dtml-var "REQUEST.form">:

{'street': address1: 1, address2: 2, city: 3, state: 4, zip: 5, 'submit':
'submit'}

The original <dtml-with> code still works, as does
<dtml-var "street.address1">.  I've also tried using getitem:

<dtml-var "_.getitem('street')['address1']">

I'm quite confused.  It would appear that "street" really *isn't*
a dictionary at all, yet somehow the <dtml-xxx> tags still work.  What's
going on here?  I'm quite befuddled.

Thanks a lot in advance for any help, and apologies again for the
convoluted message.

-CJ