如何更改隐藏输入值，然后使用django表单发送？

from django import forms

class MyForm(forms.Form):
    hidden_field = forms.CharField(widget=forms.HiddenInput())
    # 其他字段定义

from django.shortcuts import render
from .forms import MyForm

def my_view(request):
    form = MyForm(request.POST or None)
    if form.is_valid():
        # 修改隐藏输入字段的值
        form.cleaned_data['hidden_field'] = 'new_value'
        # 处理其他表单字段的值
        # ...

    return render(request, 'my_template.html', {'form': form})

<form method="post">
  {% csrf_token %}
  {{ form.hidden_field }}
  <!-- 渲染其他表单字段 -->
  <input type="submit" value="Submit">
</form>