Django学习笔记之form组件的局部钩子和全局钩子

本文通过注册页面的form组件，查看其中使用的全局钩子和局部钩子。

# Create your views here.
class RegForm(forms.Form):
username = forms.CharField(
min_length=3,
label="用户名",
help_text=‘‘,
error_messages={
"required": "不能为空",
"invalid": "格式错误",
"min_length": "用户名最短8位"
}
)
password = forms.CharField(
min_length=3,
label="密码",

help_text=‘6~16个字符，区分大小写‘,
error_messages={
"required": "不能为空",
"invalid": "格式错误",
},
widget=forms.widgets.PasswordInput
)

re_password = forms.CharField(
min_length=3,
label="确认密码",

help_text=‘请再次填写密码‘,
error_messages={
"required": "不能为空",
"invalid": "格式错误",
},
widget=forms.widgets.PasswordInput)

gender = forms.fields.ChoiceField(
choices=((1, "男"), (2, "女"), (3, "保密")),
label="性别",
initial=3,
widget=forms.widgets.RadioSelect
)

phone = forms.fields.CharField(
label="电话",
error_messages={
"required": "不能为空",
},
)

email = forms.fields.CharField(
label=‘邮箱‘,
help_text=‘6~18个字符，可使用字母、数字、下划线‘,
widget=forms.widgets.EmailInput,
error_messages={
"required": "不能为空",
"invalid": "格式错误",
},
)

# 批量给form表单里的字段加样式
def __init__(self, *args, **kwargs):
super().__init__(*args, **kwargs)
for field in iter(self.fields):
field_obj = self.fields[field]
if not isinstance(field_obj, forms.fields.ChoiceField):
field_obj.widget.attrs.update({‘class‘: ‘form-control‘})

# 全局钩子，此处用来判断两次输入的密码
def clean(self):
pwd = self.cleaned_data.get(‘pwd‘)
re_pwd = self.cleaned_data.get(‘re_pwd‘)
if pwd != re_pwd:
self.add_error(‘re_pwd‘, ‘两次密码不一致‘)
raise ValidationError(‘两次密码不一致‘)
else:
return self.cleaned_data

# 局部钩子函数，写给phone的校验函数
def clean_phone(self):
phone = self.cleaned_data.get(‘phone‘)
if not re.findall(‘^1[0-9]{10}$‘, phone):
raise ValidationError("格式错误！")
else:
return phone

关于钩子函数：

源码里的  forms/forms.py

源码中的钩子函数应用