#8435: Using multiple formsets within a single template
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Reporter: takkun | Owner: nobody
Status: new | Milestone: 1.0 maybe
Component: Forms | Version: 1.0-alpha-2
Keywords: formsets | Stage: Unreviewed
Has_patch: 0 |
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As of this moment one is able to utilize multiple formsets within a single
view, as long as one does not use the same variable name for the fields in
the respective forms. But this breaks down on the template level,
specifically the management_form portion of formsets. The variables form-
TOTAL_FORMS and form-INITIAL_FORMS are shared for all formsets when you
include each formset's management_form in the template: {{
formset.management_form }}.
The problem isn't immediately apparent since the template will render
correctly due to the fact that you call the management_form for each
formset, thus in turn over-writing the variables form-TOTAL_FORMS and
form-INITIAL_FORMS each time you do. The trouble begins when you start
processing the request.POST data.
Let's say you have 2 formsets displayed in a template, the first one you
configure with 4 fields and the second with 2 fields. When you then
process the POST data in the view by calling "for form in formset1.forms"
it will only iterate 2 times oppose to the 4 times one would initially
expect, all due to the fact that formset2's management_form has now over-
written the form-TOTAL_FORMS variable; thus you lose whatever data was
submitted in the remaining 2 fields in formset1.
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Ticket URL: <http://code.djangoproject.com/ticket/8435>
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