如何在 Django 用户模型中搜索对象

Question

I have a Profile model:

from django.contrib.auth.models import User

class Profile(models.Model):
    first_name = models.CharField(max_length=100, blank=True)
    last_name = models.CharField(max_length=100, blank=True)
    user = models.OneToOneField(User, on_delete=models.CASCADE)
    birthday = models.DateField(null=True, blank=True)
    bio = models.TextField(blank=True, max_length=1000)
    location = models.CharField(max_length=100, blank=True)
    ...

And a search contacts view:

class SearchContactsView(ListView):
    model = Profile
    template_name = 'users/contact_search.html'
    context_object_name = 'qs'

    def get_queryset(self):
        q1 = self.request.GET.get('contact_name')
        q2 = self.request.GET.get('contact_location')

        if q1 or q2:
            return Profile.objects.filter(Q(first_name__icontains=q1) |
                                          Q(last_name__icontains=q1),
                                          location__icontains=q2)

        return Profile.objects.all()

It is working fine but I would like to be able to search for contacts via the user field as well. Does anyone know a way to do that?

EDIT my user's username's are created by them when they sign up to the site and are currently uneditable. They are displayed on the admin page via a dropdown since they are a OneToOneField. I think my issue is that django recognises them only as an IntegerField('pk') but I need to somehow cast them as a string value. Am I right in thinking that, and if so how can this be achieved?

Answer 1

You can add to your template to allow user to input user_username and save that username to q3:

q3 = self.request.GET.get('user_username')

After that you can adjust your If condition accordingly, then change your return to something like:

Profile.objects.filter(Q(first_name__icontains=q1) |
                                          Q(last_name__icontains=q1),
                                          location__icontains=q2,
                                          user__username=q3)