django 有没有什么监控 model 字段修改的插件。

某个字段修改，记录下修改人 修改前后的值， 现在我在 ModelForm clean 函数里处理了下，感觉 。。。。挺蛋疼的。

class SynthesisStepForm(BootstrapModelForm): class Meta: model = SynthesisStep fields = ('title', 'version', 'condition', 'yield_rate', 'testing', 'stype') widgets = { 'testing': forms.Textarea(attrs={'rows': '4', 'cols': '100', 'style': 'width:auto;'}), 'condition': forms.Textarea(attrs={'rows': '4', 'cols': '100', 'style': 'width:auto;'}) } def clean(self): """ 用于监控字段被修改 :return: """ update_fields = ('title', 'version', 'condition', 'yield_rate', 'testing', 'stype') cleaned_data = super(BootstrapModelForm, self).clean() update_note = supervisory_update_fields(self, cleaned_data, update_fields) self._update_note = update_note return cleaned_data 

def supervisory_update_fields(form_obj, cleaned_data, update_fields): """ 用于监控 form 提交字段的变化 :param form_obj: :param cleaned_data: :param update_fields: :return: """ update_note = '' i form_obj.instance.pk: # new instance only changed_data = form_obj.changed_data for data in changed_data: if data in update_fields: try: old_field = eval('form_obj.instance.{0}'.format(data)) new_field = cleaned_data[data] if old_field != new_field: update_note = update_note + '{2} is modified , from "{0}" to "{1}"\n'.format(old_field,new_field, data) except Exception as e: pass return update_note