fields.py

#!/usr/bin/python
#-*-coding:utf-8-*-

from django.forms.fields import CharField
from validators import username, password


class UsernameField(CharField):
    default_error_messages = {
        'invalid': u'4-12位,由字母数字下划线组成',
        'required': u'用户名必须要填',
        'max_length': u'管理员用户名至多为12位',
        'min_length': u'管理员用户名至少为6位'
    }
    default_validators = [username]

    def clean(self, value):
        value = self.to_python(value).strip()
        return super(UsernameField, self).clean(value)


class PasswordField(CharField):
    default_error_messages = {
        'invalid': u'密码由字母数字下划线组成的字符串，最少为8位',
        'required': u'密码必须要填(由字母数字下划线组成的字符串，最少为6位)',
        'max_length': u'密码至多为32位',
        'min_length': u'密码至少为8位'
    }
    default_validators = [password]