Re: [Django] #15722: Conditional Formset Rendering/Validation

[Django]

#15722: Conditional Formset Rendering/Validation
+
 Reporter:  mlavin  |Owner:  nobody
 Type:  Bug |   Status:  closed
Component:  Forms   |  Version:  1.3
 Severity:  Normal  |   Resolution:  fixed
 Keywords:  | Triage Stage:  Accepted
Has patch:  1   |  Needs documentation:  0
  Needs tests:  0   |  Patch needs improvement:  0
Easy pickings:  0   |UI/UX:  0
+

Comment (by loewis):

 In [16950]:
 {{{
 #!CommitTicketReference repository="" revision="16950"
 Merged revisions
 
16743,16745,16747-16750,16752-16754,16756-16760,16770,16773-16800,16802-16804,16806,16808,16811,16813,16815,16817-16826,16829-16833,16835-16836,16838-16843,16845-16858,16860-16866,16868,16871-16877,16882-16890,16893-16947
 via svnmerge from
 https://code.djangoproject.com/svn/django/trunk

 
   r16743 | gabrielhurley | 2011-09-09 23:36:58 +0200 (Fr, 09 Sep 2011) | 2
 lines

   Fixed #16791 -- Updated a broken URL in the README file. Thanks to
 paulcwatts for the report and patch.
 
   r16745 | Alex | 2011-09-09 23:45:58 +0200 (Fr, 09 Sep 2011) | 1 line

   Switch to using explicit new-style division behavior, rather than
 relying on teh classic behavior.
 
   r16747 | SmileyChris | 2011-09-10 00:32:38 +0200 (Sa, 10 Sep 2011) | 1
 line

   Fix and test for cleaning a non-string value in a URLField
 
   r16748 | gabrielhurley | 2011-09-10 00:33:28 +0200 (Sa, 10 Sep 2011) | 2
 lines

   Fixed #16786 -- Minor cleanups in the memcached section of the caching
 topic guide. Thanks to jamesp for the report and patch.
 
   r16749 | jbronn | 2011-09-10 00:34:23 +0200 (Sa, 10 Sep 2011) | 1 line

   Fixed #16408 -- Fixed conversion of dates, and other problems with the
 SpatiaLite backend.
 
   r16750 | jbronn | 2011-09-10 00:47:18 +0200 (Sa, 10 Sep 2011) | 1 line

   Removed extra call to `syncdb` that slipped in with r16749.
 
   r16752 | SmileyChris | 2011-09-10 00:57:12 +0200 (Sa, 10 Sep 2011) | 1
 line

   Fixes #16664 -- URLField's to_python method fails with ValueError on
 some urls on python 2.7. Based on patch by zigzag.
 
   r16753 | russellm | 2011-09-10 01:02:33 +0200 (Sa, 10 Sep 2011) | 1 line

   Added two pointless query repeats to work around a known issue with
 MySQL that was causing failures in our test suite.
 
   r16754 | gabrielhurley | 2011-09-10 01:25:48 +0200 (Sa, 10 Sep 2011) | 2
 lines

   Fixed #16782 -- Corrected a broken cross-reference to the database
 engine setting in the tutorial. Thanks to mjumbewu for the report and
 patch.
 
   r16756 | kmtracey | 2011-09-10 02:05:48 +0200 (Sa, 10 Sep 2011) | 2
 lines

   Fixed #15722: ensure formsets evaluate to True even if they have no
 forms. Thanks mlavin.
 
   r16757 | jbronn | 2011-09-10 02:29:34 +0200 (Sa, 10 Sep 2011) | 1 line

   Fixed #13670 -- Comparisons with the spatial adapter won't blow up in
 some corner cases.  Thanks, milosu for the bug report and jpaulett for the
 patch.
 
   r16758 | russellm | 2011-09-10 02:46:38 +0200 (Sa, 10 Sep 2011) | 1 line

   Added protection against spoofing of X_FORWARDED_HOST headers. A
 security announcement will be made shortly.
 
   r16759 | russellm | 2011-09-10 02:46:48 +0200 (Sa, 10 Sep 2011) | 1 line

   Corrected an issue which could allow attackers to manipulate session
 data using the cache. A security announcement will be made shortly.
 
   r16760 | russellm | 2011-09-10 02:47:00 +0200 (Sa, 10 Sep 2011) | 1 line

   Altered the behavior of URLField to avoid a potential DOS vector, and to
 avoid potential leakage of local filesystem data. A security announcement
 will be made shortly.
 
   r16770 | Alex | 2011-09-10 03:53:56 +0200 (Sa, 10 Sep 2011) | 1 line

   Make ``Formset.__getitem__`` O(1), rather than O(n).  If you override
 ``__iter__`` you now need to also override ``__getitem__`` for consistant
 behavior.  Thanks to Carl and Russ for the review.
 
   r16773 | Alex | 2011-09-10 04:42:05 +0200 (Sa, 10 Sep 2011) | 1 line

   Fixed #11404.  Added ``FormSet.has_changed``, for consistancy with
 ``Form.has_changed``. Thanks to michelts for the patch.
 
   r16774 | Alex | 2011-09-10 04:52:37 +0200 (Sa, 10 Sep 2011) | 1 line

   Fixed #16793. Added more cross referencing to the load tag's
 documentation.  Thanks to bluejeansummer for the patch.
 
   r16775 | jbronn | 2011-09-10 05:04:30 +0200 (Sa, 10 Sep 2011) | 1 line

   Fixed #16790 -- Modified the geographic admin to work after r16594.
 Thanks, jdiego, for the bug report and patch.
 
   r16776 | carljm | 2011-09-10 05:26:13 +0200 (Sa, 10 Sep 2011) | 1 line

   Corrected documentation inconsistencies regarding deprecation of
 URLField.verify_exists.
 

Re: [Django] #15722: Conditional Formset Rendering/Validation

[Django]

#15722: Conditional Formset Rendering/Validation
+
   Reporter:  mlavin|  Owner:  nobody
   Type:  Bug   | Status:  closed
  Milestone:|  Component:  Forms
Version:  1.3   |   Severity:  Normal
 Resolution:  fixed |   Keywords:
   Triage Stage:  Accepted  |  Has patch:  1
Needs documentation:  0 |Needs tests:  0
Patch needs improvement:  0 |  Easy pickings:  0
  UI/UX:  0 |
+
Changes (by kmtracey):

 * status:  new => closed
 * resolution:   => fixed


Comment:

 In [16756]:
 {{{
 #!CommitTicketReference repository="" revision="16756"
 Fixed #15722: ensure formsets evaluate to True even if they have no forms.
 Thanks mlavin.
 }}}

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Re: [Django] #15722: Conditional Formset Rendering/Validation

[Django]

#15722: Conditional Formset Rendering/Validation
+
   Reporter:  mlavin|  Owner:  nobody
   Type:  Bug   | Status:  new
  Milestone:|  Component:  Forms
Version:  1.3   |   Severity:  Normal
 Resolution:|   Keywords:
   Triage Stage:  Accepted  |  Has patch:  1
Needs documentation:  0 |Needs tests:  0
Patch needs improvement:  0 |  Easy pickings:  0
  UI/UX:  0 |
+
Changes (by mlavin):

 * has_patch:  0 => 1
 * ui_ux:   => 0
 * easy:   => 0


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Re: [Django] #15722: Conditional Formset Rendering/Validation

[Django]

#15722: Conditional Formset Rendering/Validation
+--
   Reporter:  mlavin|Owner:  nobody
   Type:  Bug   |   Status:  new
  Milestone:|Component:  Forms
Version:  1.3   | Severity:  Normal
 Resolution:| Keywords:
   Triage Stage:  Accepted  |Has patch:  0
Needs documentation:  0 |  Needs tests:  0
Patch needs improvement:  0 |
+--
Changes (by carljm):

 * stage:  Unreviewed => Accepted


Comment:

 I think we should override __nonzero__ to return True. It's slightly
 unusual to have ``len(obj) == 0 and bool(obj) is True``, but I think it's
 sensible here: len() reflecting the number of forms is useful, but a
 formset with no forms is not really "empty", as the management form alone
 is still functionally significant.

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Re: [Django] #15722: Conditional Formset Rendering/Validation

[Django]

#15722: Conditional Formset Rendering/Validation
--+--
   Reporter:  mlavin  |Owner:  nobody
 Status:  new |Milestone:
  Component:  Forms   |  Version:  1.3
 Resolution:  | Keywords:
   Triage Stage:  Unreviewed  |Has patch:  0
Needs documentation:  0   |  Needs tests:  0
Patch needs improvement:  0   |
--+--
Changes (by manfre):

 * cc: mmanfre@… (added)


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Re: [Django] #15722: Conditional Formset Rendering/Validation

[Django]

#15722: Conditional Formset Rendering/Validation
--+--
   Reporter:  mlavin  |Owner:  nobody
 Status:  new |Milestone:
  Component:  Forms   |  Version:  1.3
 Resolution:  | Keywords:
   Triage Stage:  Unreviewed  |Has patch:  0
Needs documentation:  0   |  Needs tests:  0
Patch needs improvement:  0   |
--+--
Changes (by calvinspealman):

 * cc: ironfroggy@… (added)
 * needs_docs:   => 0
 * needs_tests:   => 0
 * needs_better_patch:   => 0


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[Django] #15722: Conditional Formset Rendering/Validation

[Django]

#15722: Conditional Formset Rendering/Validation
+---
 Reporter:  mlavin  | Owner:  nobody
   Status:  new | Milestone:
Component:  Forms   |   Version:  1.3
 Keywords:  |  Triage Stage:  Unreviewed
Has patch:  0   |
+---
 #14655 introduced formsets as iterables and defined `__len__` as the
 number of forms. However this causes a  side effect in that if there are
 no forms then bool returns `False`. Meaning if you have a condition in
 your template which looks for the formset in the context before rendering

 {{{
 {% if formset %}
 {# formset rendering would go here... #}
 {% endif %}
 }}}

 then if there are no forms this will not render. It also means that the
 management form will not be rendered. On POST if the formset is bound
 without the management form data it raises a `ValidationError` on
 `__init__`.

 There are possible work-arounds:
 1.) Override `__nonzero___` on the formset to return `True`

 2.) Change conditional statements to look for the existence of the
 management form instead i.e. `{% if formset.management_form %}`

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