# A Django 3.x-era module, used to check the guard. Every marked API is gone in Django 6.1.
from django.conf.urls import url
from django.db import models
from django.utils.encoding import force_text
from django.utils.html import format_html
from django.utils.translation import ugettext_lazy as _


class Order(models.Model):
    total = models.IntegerField()
    paid = models.NullBooleanField()
    code = models.CharField(max_length=8)

    class Meta:
        index_together = [["code", "total"]]
        constraints = [models.CheckConstraint(check=models.Q(total__gte=0), name="total_gte_0")]

    def __str__(self):
        return force_text(self.code)

    def badge(self):
        return format_html("<span class='paid'>paid</span>")


def mark_paid(order):
    order.paid = True
    order.save(False, False)


def view(request):
    if request.is_ajax():
        return None


urlpatterns = [url(r"^orders/$", view)]


# --- settings.py from the same project ---
USE_L10N = True
EMAIL_HOST = "smtp.example.com"
EMAIL_PORT = 587