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PODjango FormView Not Saving
 

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  1. PODjango FormView Not Saving
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    <p>My form isn't saving the models that I need it to. My form:</p> <pre><code>class RewardForm(forms.Form): quantity = forms.IntegerField(max_value=10, min_value=1, label=_('quantity'), initial=1) reward = forms.CharField(max_length=50, label=_('reward')) reward_denomination = forms.ModelChoiceField(queryset=Reward_Denomination.objects.all(), widget=forms.RadioSelect) def clean_reward(self): data = self.cleaned_data.get('reward') try: reward = Reward.objects.get(reward_name=data) except ObjectDoesNotExist: raise forms.ValidationError(_('Reward does not exist'), code='invalid') return data def clean_reward_denomination(self): data = self.cleaned_data.get('reward_denomination') try: denomination = Reward_Denomination.objects.get(denomination=data) except ObjectDoesNotExist: raise forms.ValidationError(_('Denomination does not exist'), code='invalid') return data def save(self, request, commit=True): user = request.user data = self.cleaned_data 'try: post_reward = data['reward'] post_denomination = data['reward_denomination'] quantity = data['quantity'] except LookupError: raise Http404 reward = Reward.objects.get(reward_name=post_reward) denomination = Reward_Denomination.objects.get(denomination=post_denomination) user_points = Points.objects.filter(affiliate__id=user.id).aggregate(total_points=Sum('points')) user_points = user_points['total_points'] try: total_cost = (quantity * denomination.cost) except ArithmeticError: raise Http404 quote_price = -total_cost if user_points &gt;= total_cost: reward_order = Points.objects.create(affiliate=user, points=quote_price, from_reward=True, from_offer=False) status_coded = Status_Code.objects.create(short_name="Pending", name="The order is currently being reviewed", description="The order is in queue") redeem_order = Redeem.objects.create(affiliate=user, status_code=status_coded, quantity=quantity, reward=reward, price=total_cost) return reward_order </code></pre> <p>My Views:</p> <pre><code>class Reward_Detail(DetailView): model = Reward slug_field = 'reward_slug' context_object_name = 'reward' template_name = 'omninectar/reward.html' #Detail Stuff class RedeemReward(SingleObjectMixin, FormView): template_name = 'omninectar/reward.html' slug_field = 'reward_slug' form_class = RewardForm model = Reward def post(self, request, *args, **kwargs): self.object = self.get_object() return super(RedeemReward, self).post(request, *args, **kwargs) def get_success_url(self): return reverse('omni:reward_confirmation') class RewardBeautify(View): def get(self, request, *args, **kwargs): view = Reward_Detail.as_view() return view(request, *args, **kwargs) def post(self, request, *args, **kwargs): view = RedeemReward.as_view() return view(request, *args, **kwargs) </code></pre> <p>So I initially thought that the FormView would handle the form processing (validate, and, if valid, run form.save(), etc). I'm following the <a href="https://docs.djangoproject.com/en/dev/topics/class-based-views/mixins/#an-alternative-better-solution" rel="nofollow">FormView, SingleObjectMixin</a> example on the Django website. I don't receive any errors when I try and submit the form, but no objects are created either. I've tried defining a form_valid method that runs the save method, I've tried putting it inside the post method in the formview, etc. Can anyone spot the error/errors? Thanks!</p>
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    1. COWell try to put `import pdb; pdb.set_trace` into your method save of your form, then call this method from form_valid. This way you can see how whether or not the error comes from the method of your form
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    2. COOne Big problem is, that save method returns nothing if your last condition fails. Because the variable is not set before that condition and is only set in that condition. That is one error i can spot. Another minor detail is raising 404 on arithmetical error. 404 means that page is missing and should not be used when something else fails. Also, for clarity's sake, since you are wrapping other potential errors into try/except, you might want to use get_object_or_404 in all the places where you are using Model.objects.get
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