如何在django模型中订购选择

from django.db import models

class Order(models.Model):
    ORDER_CHOICES = (
        ('A', 'Option A'),
        ('B', 'Option B'),
        ('C', 'Option C'),
    )
    order_choice = models.CharField(max_length=1, choices=ORDER_CHOICES)

from django import forms
from .models import Order

class OrderForm(forms.ModelForm):
    class Meta:
        model = Order
        fields = ['order_choice']

from django.shortcuts import render, redirect
from .forms import OrderForm

def create_order(request):
    if request.method == 'POST':
        form = OrderForm(request.POST)
        if form.is_valid():
            form.save()
            return redirect('success')
    else:
        form = OrderForm()
    return render(request, 'create_order.html', {'form': form})