如何在django中将用户名传递到表单内的函数中？

from django import forms

class MyForm(forms.Form):
    def __init__(self, username, *args, **kwargs):
        super(MyForm, self).__init__(*args, **kwargs)
        self.username = username

from django.shortcuts import render
from .forms import MyForm

def my_view(request):
    username = request.user.username  # 假设用户名存储在request.user.username中
    form = MyForm(username)
    return render(request, 'my_template.html', {'form': form})

<form method="POST">
  {% csrf_token %}
  {{ form.username }}
  <!-- 其他表单字段 -->
  <button type="submit">提交</button>
</form>