Tuesday, December 10, 2019

Re: passing an argument to ListView class and accessing using kwargs

I think you need to add ** to kwargs.
like: qs = Utilizationtable.objects.filter(pathname=**kwargs)

alternatively, this may also work,
def get_queryset(self):
        return self.model.objects.filter(pathname=self.kwargs['pathname'])



On Wed, Dec 11, 2019 at 8:33 AM Patrick Carra <pcarra.pc@gmail.com> wrote:
Hello I am attempting to pass an argument to a Class(ListView) and then perform a filter using a kwarg that contains the argument passed in the url.  I am having a problem because I cannot access the variable in the url using kwargs.  I am not sure what I'm doing wrong below is the link that I'm using to pass this value:
<a href="{% url 'viewUtilization' record.pathname %}" target="blank" class="edit-item" title="ViewUtilization">Click to View Utilization</a><br>

my viewLit/urls.py is:
urlpatterns= [
     path('<path:pk>/', views.viewLit, name='viewLit'),
     path('<path:circuitid>/edit', views.editLit.as_view(), name='editLit'),
     path('<path:circuitid>/editXC', views.editXC.as_view(), name='editXC'),
     path('<path:pathname>/viewutilization', views.viewUtilization.as_view(), name='viewUtilization'),
]

my views.py is:
class viewUtilization(ListView):
    pk_url_kwarg = 'pathname'
    model=Utilizationtable

    def get_queryset(self, **kwargs):
        qs = Utilizationtable.objects.filter(pathname=kwargs)
        return qs


and my template is:
<html>
<style>
</style>
<body>
You have made it to the utilization page
{% block content %}
  <h2>Utilization</h2>
    {% for object in object_list %}
      {{ object.reportdate }} {{ object.utilization }}
    {% endfor %}
{% endblock %}
</body>
</html>

My query comes back as this:
SELECT ••• FROM "utilizationtable" WHERE "utilizationtable"."pathname" = '{}'

I know I'm missing something simple but I'm not sure what?!?!?!?!??!!

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