So what I am trying to do is create urls such that the user can see complaints either by passing a particular parameter or sort by upvotes by default if no parameter is passed.
urls.py
path('', views.exploreComplaints, name='explore-complaints'),
path('?sort_by=<str:sorting_parameter>/', views.exploreComplaints, name='explore-complaints-by-parameter'),
views.py
def exploreComplaints(request, sorting_parameter="upvotes"):
complaints = Complaint.objects.all()
if(sorting_parameter=="name"):
complaints = sorted(complaints, key = lambda x : x.complaint_name)
else:
complaints = sorted(complaints, key = lambda x : x.complaint_upvotes, reverse = True)
context = {'complaints':complaints}
return render(request, 'complaints/complaints.html', context)
The sorting parameter does not work when I go to a URL, the value of sorting_parameter is always upvotes, even when I go to a url with ?/sort_by=name in the end. Where am I wrong?
Edit: Complaint Model:
class Complaint(models.Model):
complaint_title = models.CharField(max_length = 1000, null = True)
complaint_filer = models.ForeignKey(User, null = True, on_delete = models.CASCADE)
complaint_description = models.TextField(null = True)
complaint_status = models.CharField(max_length = 10, default = 'active')
complaint_request_image = models.ImageField(null = True, blank = True, upload_to = 'complaints', default = 'complaints/default-image.jpg')
complaint_place = models.CharField(max_length = 1000, null = True)
complaint_under_investigation_by = models.CharField(max_length = 1000, null = True, blank = True)
complaint_upvotes = models.IntegerField(default = 0)
complaint_upvotes_users = models.TextField(default=',', blank = True)
complaint_downvotes_users = models.TextField(default=',', blank = True)
tags = TaggableManager()
def __str__(self):
return self.complaint_title
Django URL dispatcher doesn't look at GET or POST parameters while resolving the handler.
What you need is to access request.GET mapping in the view: Django request get parameters
In your case, the view definition would look like:
urls.py
urlpatterns = [
path('', views.exploreComplaints, name='explore-complaints'),
]
views.py
def exploreComplaints(request):
complaints = Complaint.objects.all()
sorting_parameter = request.GET.get("sort_by")
if sorting_parameter == "name":
complaints = sorted(complaints, key=lambda x: x.complaint_name)
else:
complaints = sorted(complaints, key=lambda x: x.complaint_upvotes, reverse=True)
context = {'complaints':complaints}
return render(request, 'complaints/complaints.html', context)
# or, to offload sorting on the database:
def explore_complaints(request):
# distinguish the model field to sort by
sorting_parameter = request.GET.get("sort_by")
ordering_param = "-complaint_upvotes" # default ordering
if sorting_parameter == "name":
ordering_param = "complaint_name"
# add ORDER BY clause to the final query
complaints = Complaint.objects.order_by(ordering_param)
context = {"complaints": complaints}
return render(request, "complaints/complaints.html", context)
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