在多对多关系上对django MultipleChoiceField使用initial

from django.db import models

class Student(models.Model):
    name = models.CharField(max_length=100)
    courses = models.ManyToManyField('Course')

class Course(models.Model):
    name = models.CharField(max_length=100)

from django import forms

class StudentForm(forms.Form):
    name = forms.CharField(max_length=100)
    courses = forms.MultipleChoiceField(choices=Course.objects.values_list('id', 'name'), initial=[1, 2])

from django.shortcuts import render
from .forms import StudentForm

def student_view(request):
    initial_data = {'name': 'John Doe', 'courses': [1, 2]}
    form = StudentForm(initial=initial_data)
    return render(request, 'student.html', {'form': form})