django how to rename PK field in a url [duplicate] - django

Question

This question already has an answer here:
django use Pk field in a url
(1 answer)
Closed 4 years ago.
if anyone can help me with how to rename pk for a class(table) when I use it in the urlpattern.
(my goal is using many classes(tables ) PK in the same url and I want to know how to rename PK field for each table)
My code below is just for one class(table) for simplicity:
models.py:
class School(models.Model):
name = models.CharField(max_length=256)
principal = models.CharField(max_length=256)
location = models.CharField(max_length=256)
def __str__(self):
return str(self.name)
def get_absolute_url(self):
return reverse("basic_app:school_detail",kwargs={'pk':self.pk})
views.py:
class SchoolListView(ListView):
model = models.School
class SchoolDetailView(DetailView):
context_object_name = 'school_details'
model = models.School
template_name = 'basic_app/school_detail.html'
and my current urls.py (which I want to edit) :
urlpatterns = [
url(r'^$',views.SchoolListView.as_view(),name='school_list'),
url(r'^(?P<pk>\d+)/$',views.SchoolDetailView.as_view(),name='school_detail'),]
So my goal is to make the urls.py file look like this(school_pk instead of pk):
urlpatterns = [
url(r'^$',views.SchoolListView.as_view(),name='school_list'),
url(r'^(?P<school_pk>\d+)/$',views.SchoolDetailView.as_view(),name='school_detail'),]
I know I should add a function below class SchoolDetailView in views.py but I don’t know how ?
I am still learning so any help will be highly appreciated..Thanks in Advance

Answer 1

When declaring your model you can make a field primary by including primary_key=True, eg
class School(models.Model):
name = models.CharField(max_length=256, primary_key=True)
You can then use name within your URL.
I would recommend using unique slug fields.
EDIT
The URL isn't interested if it is called pk or slug or name. It is interested in the pattern. If you have a URL patterns
url(r'^(?P<slug>[\w\\-]+)/$', views.Type1View.as_view(), name="slug"),
url(r'^(?P<city>[\w\\-]+)/$', views.Type2View.as_view(), name="city"),
Both {% url 'slug' slug %} and {% url 'city' slug %} will produce a URL or /slug/ and both will call Type1View.as_view()
You need to ensure your URLs are unique.
If you want to refer to 3 tables then your url pattern is
url(r'^(?P<slug>[\w\\-]+)/(?P<slug1>[\w\\-]+)/(?P<slug2>[\w\\-]+)/$', MyView.as_view(), name="someName"),
And then within your view define def get_objects(self) or def get_queryset(self) to pick up the info you want.