如何在Django中通过user_id获取用户名？

Question

I have this view and loop in my templates:

def home(request):
    entries = Entries.objects.all()
    context = {"entries": entries}
    return render(request, "index.html", context)

index.html:

{% for entry in entries %}
{{ entry.user_id }}
{% endfor %}

I can get the user_id of the entries to output. But how do I get the username for that user_id ? I don't know how to get that information in my view.

Answer 1

It's better if you have a ForeignKey to User in your Entries model

from django.contrib.auth.models import User
class Entries(models.Model):
    user = models.ForeignKey(User) # instead of user_id = IntegerField()

If you don't want that, you can add a property to your model

from django.contrib.auth.models import User
class Entries(models.Model):
    @property
    def user(self):
        return User.objects.get(pk=self.user_id)

This property makes the user available as entry.user as if it were an attribute, so:

{% for entry in entries %}
    {{ entry.user.username }}
{% endfor %}