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POOverride get() in Django Class Based View to Filter
 

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  1. POOverride get() in Django Class Based View to Filter
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    <p>I'm starting a new app and I'm trying my best to embrace Class Based Views. Ahhh, growing pains. I'm trying to do a simple filter here from a GET variable, if it doesn't exist I want to return all objects ordered by id desc, if it does, I want to filter, order and return the filtered list. </p> <p>I'm writing 30+ lines of code to do this, so I <em>must</em> be doing something wrong, right? I tried overriding get_queryset() and now that I think of it, maybe I should be calling self.request.GET['search'] in get_queryset() to do this filtering. Is there a standard way of accomplishing this?</p> <pre><code>class MyModelList(AdminPageMixin, ListView): model = MyModel context_object_name = 'object' template_name = 'template/list.html' def get(self, request, *args, **kwargs): if 'search' in request.GET and len(request.GET['search']): search = request.GET['search'] self.object_list = MyModel.objects.filter(advertiser__name=search).orderby('-id') context = self.get_context_data(object_list=self.object_list, search=search) else: self.object_list = MyModel.objects.all() context = self.get_context_data(object_list=self.object_list).orderby('-id') return self.render_to_response(context) def get_context_data(self, **kwargs): context = super(MyModelList, self).get_context_data(**kwargs) form = MyModelForm try: context['search'] = kwargs['search'] except KeyError: pass context['form'] = form context['form_action'] = reverse('mymodel-add') context['form_display'] = 'hide' context['form_save_label'] = 'Add' return context </code></pre> <p>Secondarily, to complicate matters, I have a CreateView and an UpdateView that I would like to share the get() or get_queryset() and get_context_data() methods of my ListView. I'm sure that it's possible with a Mixin, but again, I'm looking for a standardized way of doing it. Suggestions? Here's the CreateView in which I'd like to share ListView's methods.</p> <pre><code>class MyModelAdd(AdminPageMixin, CreateView): model = MyModel form_class = MyModelForm context_object_name = 'object' template_name = 'templates/list.html' def get_success_url(self): return reverse('mymodel-list') def get_context_data(self, **kwargs): context = super(MyModelAdd, self).get_context_data(**kwargs) context['form_action'] = reverse('mymodel-add') context['form_display'] = 'show' context['object_list'] = MyModel.objects.all() return context def form_invalid(self, form): form = MyModelForm(self.request.POST) context = self.get_context_data() context['form'] = form context['form_action'] = reverse('mymodel-add') context['form_display'] = 'show' context['form_save_label'] = 'Add' return render(self.request, 'templates/list.html', context) </code></pre>
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    1. USscoopseven
    1. USscoopseven
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    1. COCBV do not necessarily mean less code
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      1. POOverride get() in Django Class Based View to Filter
      1. USSamuele Mattiuzzo
    2. COThanks, @Samuele for that observation. I'll add that to my docstrings ;)
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      1. USscoopseven
    3. COclass based views are a pain but it slowly gets better as you learn to refactor base classes better.
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      1. POOverride get() in Django Class Based View to Filter
      1. USmiki725
 

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A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

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