Relevant urls:
app_name = "utils"
urlpatterns = [
path('', index, name="index"),
path('<str:message>', index, name="index"),
path('migrate/<str:migrate_step>', migrate, name="migrate"),
# -------------- Box Opt Evaluation urls --------------
path('box-optimization/instructions', instruct, name='instructions'),
path('box-optimization/add-items/<int:pk>',
AddItemsToEvaluateCreateView.as_view(), name='evaluate'),
path('box-optimization/new-test-case', create_new_test_case,
name='new-case'),
path('box-optimization/results/<int:pk>',
EvaluateResultsUpdateView.as_view(), name='results')
]
On Thursday, July 12, 2018 at 4:04:25 PM UTC-4, clavie...@gmail.com wrote:
>
> I'm looking for a way to redirect to a different page depending upon which
> submit button the user clicks. I included a formaction tag in the template,
> but django still demands that get_absolute_url be defined. Using Django 2.0
>
> Basically, I'm trying to write a small app that launches a test case,
> which would allow a non-programmer to evaluate a small section of code
> responsible for a background process. The app should allow the user to add
> as many test items to it as they wish, one at a time. When an item is
> added, they can choose to click and 'evaluate' button or an 'add more
> items' button, and each button should go to a different page--basically,
> 'add more items' should refresh the same page. Clicking on 'add more items'
> does indeed post the data to the database, but it ignores the formaction
> tag. The stack trace says that form_valid is calling get_absolute_url on
> the model (which I have not defined), but the target url has to do with
> what the user wants to do next with said model, not the model itself. I
> haven't figured out how to override the get_absolute_url call based on
> which html button was clicked. (Though it also said I can provide an url,
> which I did on the template...)
>
> (The code I'm pasting below may be a little awkward because I've been
> finding workarounds for things by trial and error; so if anything
> particularly egregious catches someone's eye, comments to that end are
> welcome.)
>
> Problem view:
>
> class AddItemsToEvaluateCreateView(CreateView, FormMixin):
> model = ItemsTestCollection
> form_class = EnterItem
> template_name = 'utils\evaluate.html'
>
> def get_queryset(self):
> return ItemsTestCollection.objects.filter(case_id=self.kwargs['pk'])
>
> def get_object(self, queryset=None):
> return EvaluateTestCase.objects.get(pk=self.kwargs['pk'])
>
> def get_context_data(self, **kwargs):
> context = super().get_context_data()
> context['case_id'] = self.kwargs['pk']
> context['items_in_order'] =
> ItemsTestCollection.objects.filter(case_id=self.kwargs['pk'])
> return context
>
>
> Problem models:
>
> class ItemsTestCollection(models.Model):
> """An item to be tested in Box Opt."""
> item = models.ForeignKey('item.Item', on_delete=models.CASCADE)
> qty = models.IntegerField()
> case = models.ForeignKey('EvaluateTestCase', on_delete=models.CASCADE)
> box = models.ForeignKey('BoxResults', on_delete=models.CASCADE, null=True)
>
>
> class EvaluateTestCase(models.Model):
> """Individual test cases."""
>
> STATUS = (
> ('no', 'Something bad happened,'),
> ('hm', 'Needs improvement.'),
> ('ok', 'Seems all right.')
> )
>
> verdict = models.CharField(max_length=2, choices=STATUS, blank=False,
> null=True)
> feedback = models.TextField(blank=True, null=True)
>
> def get_absolute_url(self):
> return reverse('utils:evaluate', kwargs={'pk': str(self.id)})
>
> @staticmethod
> def get_item_lots(case_number: int):
> """Get the first ItemLot for each item in the EvaluateTestCase."""
> item_lots: List[ItemLot] = []
> for item_collection in
> ItemsTestCollection.objects.filter(case_id=case_number):
>
> item_lots.append(ItemLot.objects.filter(item=item_collection.item)[0])
>
> return item_lots
>
>
>
> Problem template:
>
> <form method="post">
> {% csrf_token %}
> <table>
> <tr>
> <td><label for="item">Item #: </label></td>
> <td><input type="text" id="item" name="item" autofocus/></td>
> </tr>
> <tr>
> <td><label for="qty">Qty: </label></td>
> <td><input type="text" id="qty" name="qty"/></td>
> </tr>
> <tr>
> <td><label for="case">Case: </label></td>
> <td><input type="text" id="case" name="case" value="{{ case_id
> }}" style="color:gray" readonly/></td>
> </tr>
> </table>
> <input type="submit" formaction="{% url 'utils:evaluate' case_id %}"
> value="Add more items" />
> <input type="submit" formaction="{% url 'utils:results' case_id %}"
> value="Optimize" />
> </form>
>
>
>
> Error:
> ImproperlyConfigured at /utils/box-optimization/add-items/75
>
> No URL to redirect to. Either provide a url or define a get_absolute_url
> method on the Model.
>
> Request Method: POST
> Request URL: http://localhost:8000/utils/box-optimization/add-items/75
> Django Version: 2.0.5
> Exception Type: ImproperlyConfigured
> Exception Value:
>
> No URL to redirect to. Either provide a url or define a get_absolute_url
> method on the Model.
>
> Exception Location:
> C:\miniconda3\envs\django\lib\site-packages\django\views\generic\edit.py
> in get_success_url, line 119
> Python Executable: C:\miniconda3\envs\django\python.exe
> Python Version: 3.6.5
> Python Path:
>
> ['C:\\WMS Repository\\Warehouse Management System',
> 'C:\\WMS Repository\\Warehouse Management System',
> 'C:\\miniconda3\\envs\\django\\python36.zip',
> 'C:\\miniconda3\\envs\\django\\DLLs',
> 'C:\\miniconda3\\envs\\django\\lib',
> 'C:\\miniconda3\\envs\\django',
> 'C:\\Users\\heast\\AppData\\Roaming\\Python\\Python36\\site-packages',
> 'C:\\miniconda3\\envs\\django\\lib\\site-packages',
> 'C:\\Program Files\\JetBrains\\PyCharm '
> '2017.3.3\\helpers\\pycharm_matplotlib_backend']
>
> Server time: Thu, 12 Jul 2018 15:47:04 -0400
>
> Environment:
>
>
> Request Method: POST
> Request URL: http://localhost:8000/utils/box-optimization/add-items/75
>
> Django Version: 2.0.5
> Python Version: 3.6.5
> Installed Applications:
> ['item.apps.ItemConfig',
> 'inventory.apps.InventoryConfig',
> 'fulfillment.apps.FulfillmentConfig',
> 'manifest.apps.ManifestConfig',
> 'order.apps.OrderConfig',
> 'utils.apps.UtilsConfig',
> 'django.contrib.admin',
> 'django.contrib.auth',
> 'django.contrib.contenttypes',
> 'django.contrib.sessions',
> 'django.contrib.messages',
> 'django.contrib.staticfiles']
> Installed Middleware:
> ['django.middleware.security.SecurityMiddleware',
> 'django.contrib.sessions.middleware.SessionMiddleware',
> 'django.middleware.common.CommonMiddleware',
> 'django.middleware.csrf.CsrfViewMiddleware',
> 'django.contrib.auth.middleware.AuthenticationMiddleware',
> 'django.contrib.messages.middleware.MessageMiddleware',
> 'django.middleware.clickjacking.XFrameOptionsMiddleware']
>
>
>
> Traceback:
>
> File
> "C:\miniconda3\envs\django\lib\site-packages\django\views\generic\edit.py"
> in get_success_url
> 116. url = self.object.get_absolute_url()
>
> During handling of the above exception ('ItemsTestCollection' object has
> no attribute 'get_absolute_url'), another exception occurred:
>
> File
> "C:\miniconda3\envs\django\lib\site-packages\django\core\handlers\exception.py"
>
> in inner
> 35. response = get_response(request)
>
> File
> "C:\miniconda3\envs\django\lib\site-packages\django\core\handlers\base.py"
> in _get_response
> 128. response = self.process_exception_by_middleware(e,
> request)
>
> File
> "C:\miniconda3\envs\django\lib\site-packages\django\core\handlers\base.py"
> in _get_response
> 126. response = wrapped_callback(request,
> *callback_args, **callback_kwargs)
>
> File
> "C:\miniconda3\envs\django\lib\site-packages\django\views\generic\base.py"
> in view
> 69. return self.dispatch(request, *args, **kwargs)
>
> File
> "C:\miniconda3\envs\django\lib\site-packages\django\views\generic\base.py"
> in dispatch
> 89. return handler(request, *args, **kwargs)
>
> File
> "C:\miniconda3\envs\django\lib\site-packages\django\views\generic\edit.py"
> in post
> 172. return super().post(request, *args, **kwargs)
>
> File
> "C:\miniconda3\envs\django\lib\site-packages\django\views\generic\edit.py"
> in post
> 142. return self.form_valid(form)
>
> File
> "C:\miniconda3\envs\django\lib\site-packages\django\views\generic\edit.py"
> in form_valid
> 126. return super().form_valid(form)
>
> File
> "C:\miniconda3\envs\django\lib\site-packages\django\views\generic\edit.py"
> in form_valid
> 57. return HttpResponseRedirect(self.get_success_url())
>
> File
> "C:\miniconda3\envs\django\lib\site-packages\django\views\generic\edit.py"
> in get_success_url
> 119. "No URL to redirect to. Either provide a url
> or define"
>
> Exception Type: ImproperlyConfigured at
> /utils/box-optimization/add-items/75
> Exception Value: No URL to redirect to. Either provide a url or define a
> get_absolute_url method on the Model.
>
>
>
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