CODEWITHSUNDEEP
pythondjangourlget
David H
David H

Reputation: 55

How can I GET the parameters from URL in django

I'm trying to send a parameter by URL and trying to use it in a listview. But I cant GET it in my view. I know I'm doing some stupid mistake, but can't find it.

This is the link I'm using in my template:

<a class="dropdown-item" href="{% url 'listarmateriales' tipolista='metales' %}">Ver metales

This is my url.py:

path('listarmateriales/<tipolista>',listarmateriales.as_view(), name='listarmateriales'),

And this is where I try to get the "tipolista" in my views.py:

class listarmateriales(ListView):

 template_name = 'materiales/materialeslist.html'
 
   def get_queryset(self):
     if self.request.GET.get('tipolista') is not None:
        lista=Materiales.objects.all()
        tipolista=self.request.GET.get('tipolista' '')
        if tipolista=='metales':
            Do whatever...
        
        else:

I have tried some different sintaxis, but the result is always the same, I cant read "tipolista", I have spent a lot of time with this, too much. I know it must be something easy, but, I'm new at this. Thanks in advance

Upvotes: 3

Views: 9375

Answers (2)

onapte
onapte

Reputation: 267

For the urls.py to recognize tipolista as a string variable, you should pass tipolista as a view paramater. So, your view function should be something like this:

def get_queryset(self, tipolista):
 if self.request.GET.get('tipolista') is not None:
    lista=Materiales.objects.all()
    
    if tipolista=='metales':
        #...
    
    else:
        #...

And in your url pattern, tipolista must be preceded by 'str':

path('listarmateriales/<str:tipolista>',listarmateriales.as_view(), name='listarmateriales'),

Upvotes: 1

willeM_ Van Onsem
willeM_ Van Onsem

Reputation: 477607

These are not GET parameters, these are the URL parameters. These are stored in self.kwargs, so you access these with:

def get_queryset(self):
    lista = Materiales.objects.all()
    tipolista = self.kwargs['tipolista']
    if tipolista=='metales':
        # …
    else:
        # …

these can not be None, since these exist in order to "fire" the view.

Upvotes: 4

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