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Removed forms-MAX_NUM_FORMS POST data in docs 

The field is ignored server-side and only exists as a client-side
convenience. Removing it slightly simplifies the documentation and
avoids some distractions.

Added note:: for MIN_NUM_FORMS/MAX_NUM_FORMS in
Understanding the management form section.

Co-authored-by: Carlton Gibson <carlton.gibson@noumenal.es>
This commit is contained in:
Jon Dufresne 2020-10-25 12:50:02 -07:00 committed by Carlton Gibson
parent d23cb83c99
commit d3b3eb860d
1 changed files with 13 additions and 16 deletions
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29
docs/topics/forms/formsets.txt
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@ -143,7 +143,6 @@ protects against memory exhaustion attacks using forged ``POST`` requests::
>>> data = {
... 'form-TOTAL_FORMS': '1501',
... 'form-INITIAL_FORMS': '0',
... 'form-MAX_NUM_FORMS': '',
... }
>>> formset = ArticleFormSet(data)
>>> len(formset.forms)
@ -171,7 +170,6 @@ all forms in the formset::
>>> data = {
... 'form-TOTAL_FORMS': '1',
... 'form-INITIAL_FORMS': '0',
... 'form-MAX_NUM_FORMS': '',
... }
>>> formset = ArticleFormSet(data)
>>> formset.is_valid()
@ -184,7 +182,6 @@ provide an invalid article::
>>> data = {
... 'form-TOTAL_FORMS': '2',
... 'form-INITIAL_FORMS': '0',
... 'form-MAX_NUM_FORMS': '',
... 'form-0-title': 'Test',
... 'form-0-pub_date': '1904-06-16',
... 'form-1-title': 'Test',
@ -224,7 +221,6 @@ sent without any data)::
>>> data = {
... 'form-TOTAL_FORMS': '1',
... 'form-INITIAL_FORMS': '0',
... 'form-MAX_NUM_FORMS': '',
... 'form-0-title': '',
... 'form-0-pub_date': '',
... }
@ -238,11 +234,10 @@ Understanding the ``ManagementForm``
------------------------------------
You may have noticed the additional data (``form-TOTAL_FORMS``,
``form-INITIAL_FORMS`` and ``form-MAX_NUM_FORMS``) that was required
in the formset's data above. This data is required for the
``ManagementForm``. This form is used by the formset to manage the
collection of forms contained in the formset. If you don't provide
this management data, the formset will be invalid::
``form-INITIAL_FORMS``) that was required in the formset's data above. This
data is required for the ``ManagementForm``. This form is used by the formset
to manage the collection of forms contained in the formset. If you don't
provide this management data, the formset will be invalid::
>>> data = {
... 'form-0-title': 'Test',
@ -264,6 +259,15 @@ itself. When rendering a formset in a template, you can include all
the management data by rendering ``{{ my_formset.management_form }}``
(substituting the name of your formset as appropriate).
.. note::
As well as the ``form-TOTAL_FORMS`` and ``form-INITIAL_FORMS`` fields shown
in the examples here, the management form also includes
``form-MIN_NUM_FORMS`` and ``form-MAX_NUM_FORMS`` fields. They are output
with the rest of the management form, but only for the convenience of
client-side code. These fields are not required and so are not shown in
the example ``POST`` data.
.. versionchanged:: 3.2
``formset.is_valid()`` now returns ``False`` rather than raising an
@ -344,7 +348,6 @@ is where you define your own validation that works at the formset level::
>>> data = {
... 'form-TOTAL_FORMS': '2',
... 'form-INITIAL_FORMS': '0',
... 'form-MAX_NUM_FORMS': '',
... 'form-0-title': 'Test',
... 'form-0-pub_date': '1904-06-16',
... 'form-1-title': 'Test',
@ -385,8 +388,6 @@ deletion, is less than or equal to ``max_num``.
>>> data = {
... 'form-TOTAL_FORMS': '2',
... 'form-INITIAL_FORMS': '0',
... 'form-MIN_NUM_FORMS': '',
... 'form-MAX_NUM_FORMS': '',
... 'form-0-title': 'Test',
... 'form-0-pub_date': '1904-06-16',
... 'form-1-title': 'Test 2',
@ -427,8 +428,6 @@ deletion, is greater than or equal to ``min_num``.
>>> data = {
... 'form-TOTAL_FORMS': '2',
... 'form-INITIAL_FORMS': '0',
... 'form-MIN_NUM_FORMS': '',
... 'form-MAX_NUM_FORMS': '',
... 'form-0-title': 'Test',
... 'form-0-pub_date': '1904-06-16',
... 'form-1-title': 'Test 2',
@ -490,7 +489,6 @@ happen when the user changes these values::
>>> data = {
... 'form-TOTAL_FORMS': '3',
... 'form-INITIAL_FORMS': '2',
... 'form-MAX_NUM_FORMS': '',
... 'form-0-title': 'Article #1',
... 'form-0-pub_date': '2008-05-10',
... 'form-0-ORDER': '2',
@ -588,7 +586,6 @@ delete fields you can access them with ``deleted_forms``::
>>> data = {
... 'form-TOTAL_FORMS': '3',
... 'form-INITIAL_FORMS': '2',
... 'form-MAX_NUM_FORMS': '',
... 'form-0-title': 'Article #1',
... 'form-0-pub_date': '2008-05-10',
... 'form-0-DELETE': 'on',