class Order(models.Model):
    braintree_id = models.CharField(max_length=150, blank=True)

    first_name = models.CharField(max_length=50)
    last_name = models.CharField(max_length=50)
    email = models.EmailField()
    address = models.CharField(max_length=250)
    postal_code = models.CharField(max_length=20)
    city = models.CharField(max_length=100)
    created = models.DateTimeField(auto_now_add=True)
    updated = models.DateTimeField(auto_now=True)
    paid = models.BooleanField(default=False)

    class Meta:
        ordering = ('-created',)

    def __srt__(self):
        return f'Order {self.id}'

    def get_total_cost(self):
        return sum(item.get_cost() for item in self.items.all())

@staff_member_required
def admin_order_detail(request, order_id):
    order = get_object_or_404(Order, id=order_id)
    context = {'order': order}
    return render(request, 'admin/orders/order/detail.html', context)

app_name = 'orders'

urlpatterns = [
    path('create/', views.order_create, name='order_create'),
    path('admin/order/', views.admin_order_detail, name='admin_order_detail'),
]

@admin.register(Order)
class OrderAdmin(admin.ModelAdmin):
    list_display = (
        'id',
        'first_name',
        'last_name',
        'email',
        'address',
        'postal_code',
        'city',
        'paid',
        'created',
        'updated',
        order_detail
    )

    list_filter = ['paid', 'created', 'updated']
    inlines = [OrderItemInline]
    actions = [export_to_csv]