CODEWITHSUNDEEP
djangopython-3.xdjango-viewsdjango-urls
grigs
grigs

Reputation: 1150

Passing context from one view to the other

I am attempting to pass a URL parameter to another view within my app. I currently have a function (EntryListView) that identifies what month you select, and then only shows the contents for that month. However, I would like the month to also be shown in the detail URL. This will enable a "go-back" button to navigate back to the month's page, as opposed to erroring out or navigating back to the landing page.

urls.py As Is:

url(r'entry/list/(?P<month>\w+)$', views.EntryListView.as_view(), name='entry-list'),

url(r'entry/detail/(?P<pk>[0-9]+)/$', views.DetailView.as_view(), name='detail'),

views.py

class DetailView(generic.DetailView):
    model = Entry
    template_name = 'argent/detail.html'

class EntryListView(generic.ListView):
    template_name = 'argent/index_list.html'
    queryset = Entry.objects.all()

    def get_context_data(self, **kwargs):
        month = self.kwargs.get('month')
        ctx = super(EntryListView, self).get_context_data(**kwargs)

        # January
        if month == 'January':
            ctx['January17_qs'] = Entry.objects.filter(date__range=('2017-1-1', '2017-1-31'))

        # February17
        elif month == 'February':
        ctx['February17_qs'] = Entry.objects.filter(date__range=('2017-2-1', '2017-2-28'))

        # March
        elif month == 'March':
        ctx['March17_qs'] = Entry.objects.filter(date__range=('2017-3-1', '2017-3-31'))

        return ctx

template

<a href="{% url 'argent:entry-list' %}">
                        <button type="button" class="btn btn-primary">Go Back
                    </button>
            </a>

I currently get this error when using {% url 'argent:entry-list' %}:

Reverse for 'entry-list' with arguments '()' and keyword arguments '{}' not found. 1 pattern(s) tried: ['tracker/entry/list/(?P<month>\\w+)$']

Thanks in advance for your help!

Upvotes: 1

Views: 1871

Answers (1)

v1k45
v1k45

Reputation: 8250

You can pass the details's month to the url template tag as kwarg. Something like this should work.

class DetailView(generic.DetailView):
    model = Entry
    template_name = 'argent/detail.html'

    def get_context_data(self, **kwargs):
        ctx = super(DetailView, self).get_context_data(**kwargs)
        ctx['current_month'] = self.get_object().date.strftime("%B")
        return ctx

template.html

<a href="{% url 'argent:entry-list' current_month %}">
     <button type="button" class="btn btn-primary">Go Back</button>
</a>

Upvotes: 3

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