如何在Django中使用有关对象修改的数据？

from django.db import models

class MyModel(models.Model):
    name = models.CharField(max_length=100)
    age = models.IntegerField()
    # 其他字段...

from django import forms
from .models import MyModel

class MyModelForm(forms.ModelForm):
    class Meta:
        model = MyModel
        fields = '__all__'  # 或者指定需要的字段

from django.shortcuts import render, get_object_or_404, redirect
from .forms import MyModelForm
from .models import MyModel

def edit_model(request, model_id):
    instance = get_object_or_404(MyModel, id=model_id)
    form = MyModelForm(request.POST or None, instance=instance)
    
    if form.is_valid():
        form.save()
        return redirect('model_detail', model_id=model_id)
    
    return render(request, 'edit_model.html', {'form': form})

<!-- edit_model.html -->
<form method="post">
  {% csrf_token %}
  {{ form.as_p }}
  <button type="submit">保存</button>
</form>