Django Form -从数据库中获取最后一个记录值作为表单域的动态默认值或初始值

from django import forms
from .models import YourModel

class YourForm(forms.ModelForm):
    class Meta:
        model = YourModel
        fields = '__all__'

class YourForm(forms.ModelForm):
    class Meta:
        model = YourModel
        fields = '__all__'

    def get_last_record_value(self):
        last_record = YourModel.objects.last()
        if last_record:
            return last_record.field_name
        return None

def your_view(request):
    form = YourForm()
    initial_value = form.get_last_record_value()
    form.fields['field_name'].initial = initial_value
    return render(request, 'your_template.html', {'form': form})