Django如何自定义内联错误消息

from django import forms

class MyForm(forms.Form):
    username = forms.CharField(max_length=100, error_messages={'required': '用户名不能为空'})
    password = forms.CharField(max_length=100, error_messages={'required': '密码不能为空'})

from django.shortcuts import render
from .forms import MyForm

def my_view(request):
    if request.method == 'POST':
        form = MyForm(request.POST)
        if form.is_valid():
            # 处理表单数据
            pass
        else:
            # 获取错误消息
            username_error = form.errors.get('username')
            password_error = form.errors.get('password')
            # 渲染带有错误消息的表单页面
            return render(request, 'my_template.html', {'form': form, 'username_error': username_error, 'password_error': password_error})
    else:
        form = MyForm()
    return render(request, 'my_template.html', {'form': form})

<form method="post">
    {% csrf_token %}
    {{ form.as_p }}
    {% if username_error %}
        <p>{{ username_error }}</p>
    {% endif %}
    {% if password_error %}
        <p>{{ password_error }}</p>
    {% endif %}
    <input type="submit" value="提交">
</form>