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Fixed #11726 - FormWizard does sanity check on step number performed before dynamic steps can be inserted 

Thanks to Eric Friesen for the report and michalm/esper256 for the patch.

git-svn-id: http://code.djangoproject.com/svn/django/trunk@16119 bcc190cf-cafb-0310-a4f2-bffc1f526a37
This commit is contained in:
Luke Plant 2011-04-28 14:19:25 +00:00
parent cf11e3789b
commit 7b129a82b3
2 changed files with 35 additions and 4 deletions
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32
django/contrib/formtools/tests/__init__.py
View File

@ -322,6 +322,38 @@ class WizardTests(TestCase):
response = self.client.post('/wizard/', data) response = self.client.post('/wizard/', data)
self.assertEqual(2, response.context['step0']) self.assertEqual(2, response.context['step0'])
def test_11726(self):
"""
Regression test for ticket #11726.
Wizard should not raise Http404 when steps are added dynamically.
"""
reached = [False]
that = self
class WizardWithProcessStep(WizardClass):
def process_step(self, request, form, step):
if step == 0:
if self.num_steps() < 2:
self.form_list.append(WizardPageTwoForm)
if step == 1:
that.assertTrue(isinstance(form, WizardPageTwoForm))
reached[0] = True
wizard = WizardWithProcessStep([WizardPageOneForm])
data = {"0-field": "test",
"1-field": "test2",
"hash_0": "7e9cea465f6a10a6fb47fcea65cb9a76350c9a5c",
"wizard_step": "1"}
wizard(DummyRequest(POST=data))
self.assertTrue(reached[0])
data = {"0-field": "test",
"1-field": "test2",
"hash_0": "7e9cea465f6a10a6fb47fcea65cb9a76350c9a5c",
"hash_1": "d5b434e3934cc92fee4bd2964c4ebc06f81d362d",
"wizard_step": "2"}
self.assertRaises(http.Http404, wizard, DummyRequest(POST=data))
def test_14498(self): def test_14498(self):
""" """
Regression test for ticket #14498. All previous steps' forms should be Regression test for ticket #14498. All previous steps' forms should be

7
django/contrib/formtools/wizard.py
View File

@ -47,6 +47,9 @@ class FormWizard(object):
def get_form(self, step, data=None): def get_form(self, step, data=None):
"Helper method that returns the Form instance for the given step." "Helper method that returns the Form instance for the given step."
# Sanity check.
if step >= self.num_steps():
raise Http404('Step %s does not exist' % step)
return self.form_list[step](data, prefix=self.prefix_for_step(step), initial=self.initial.get(step, None)) return self.form_list[step](data, prefix=self.prefix_for_step(step), initial=self.initial.get(step, None))
def num_steps(self): def num_steps(self):
@ -71,10 +74,6 @@ class FormWizard(object):
current_step = self.determine_step(request, *args, **kwargs) current_step = self.determine_step(request, *args, **kwargs)
self.parse_params(request, *args, **kwargs) self.parse_params(request, *args, **kwargs)
# Sanity check.
if current_step >= self.num_steps():
raise Http404('Step %s does not exist' % current_step)
# Validate and process all the previous forms before instantiating the # Validate and process all the previous forms before instantiating the
# current step's form in case self.process_step makes changes to # current step's form in case self.process_step makes changes to
# self.form_list. # self.form_list.