如何使用表单集自动使用已登录的用户填充我的Django Model 'updated_by‘字段？

from django import forms
from django.contrib.auth.models import User

class MyModelForm(forms.ModelForm):
    class Meta:
        model = MyModel
        fields = ['updated_by']
        widgets = {
            'updated_by': forms.HiddenInput()
        }

    def __init__(self, *args, **kwargs):
        self.user = kwargs.pop('user', None)
        super(MyModelForm, self).__init__(*args, **kwargs)
        if self.user:
            self.fields['updated_by'].initial = self.user

from django.forms import formset_factory

def my_view(request):
    MyModelFormSet = formset_factory(MyModelForm, extra=1)
    if request.method == 'POST':
        formset = MyModelFormSet(request.POST, user=request.user)
        if formset.is_valid():
            instances = formset.save()
            # 保存成功后的处理逻辑
    else:
        formset = MyModelFormSet(user=request.user)
    return render(request, 'my_template.html', {'formset': formset})

<form method="post">
    {% csrf_token %}
    {{ formset.management_form }}
    {% for form in formset %}
        {{ form }}
    {% endfor %}
    <input type="submit" value="Submit">
</form>