Form.is_vaild作用:
验证post过来的数据的格式
同时返回False和Ture
以下摘自django官方文档
>>> data = {
‘form-TOTAL_FORMS’: ‘2’,
‘form-INITIAL_FORMS’: ‘0’,
‘form-MAX_NUM_FORMS’: ”,
‘form-0-title’: ‘Test’,
‘form-0-pub_date’: ‘1904-06-16’,
‘form-1-title’: ‘Test’,
‘form-1-pub_date’: ”, # <– this date is missing but required
… }
>>> formset = ArticleFormSet(data)
>>> formset.is_valid()
False
>>> formset.errors
[{}, {‘pub_date’: [‘This field is required.’]}]