首页 > 代码库 > from表单验证
from表单验证
1. Model操作
- v = models.UserInfo.objects.all()
- v = models.UserInfo.objects.values("xx")
- v = models.UserInfo.objects.values_list()
- v = models.UserInfo.objects.filter(...)
- 双下滑线进行跨表
FK:
正向操作(含FK):
反向操作(表名_set):
删除时,操作:关联删除?关联设置默认值?... 待续
M2M:
待续
性能相关:待续
select_related(‘ut‘)
2. session和cookies
3. Ajax
$.ajax({
url: ‘‘,
type: ‘POST‘,
data: {user:‘xxxx‘},
dataType: ‘JSON‘,
success:function(data){
# data-> 字符串
# data = http://www.mamicode.com/JSON.parse(data)
}
})
今日内容:
1. 分页
2. Form验证
功能:
- 验证用户请求
- 自动生成HTML(保留上次提交的内容)
详细:
class Foo(forms.Form):
usename = fields.CharField() # 正则,插件
字段:
CharField 字符串
EmailField 字符串(邮箱格式)
IntegerField 字符串(数字格式)
GenericIPAddressField 字符串(IP格式)
FileField 文件对象
RegexField 字符串(自定义)
ChoiceField 多选
插件:
widgets.TextInput
widgets.PasswordInput
widgets.Textarea
widgets.Select(attrs={‘class‘: ‘form-control‘},choices=[(1,‘普通用户‘),(2,"超级用户")])
widgets.SelectMultiple(attrs={‘class‘: ‘form-control‘},choices=[(1,‘普通用户‘),(2,"超级用户")])
widget=widgets.RadioSelect(choices=((1,‘上海‘),(2,‘北京‘),))
widget=widgets.CheckboxInput()
widget=widgets.CheckboxSelectMultiple()
widget=widgets.FileInput()
单表:
FK表:
问题:数据源无法实时更新
重写构造函数:
def __init__(self,*args,**kwargs):
super(UserForm,self).__init__(*args,**kwargs)
self.fields[‘ut_id‘].widget.choices = models.UserType.objects.values_list(‘id‘,‘name‘)
3. Model操作补充
4. 中间件
process_request(self,request)
process_view(self, request, callback, callback_args, callback_kwargs)
process_template_response(self,request,response)
process_exception(self, request, exception)
process_response(self, request, response)
MIDDLEWARE = [
‘django.middleware.security.SecurityMiddleware‘,
‘django.contrib.sessions.middleware.SessionMiddleware‘,
‘django.middleware.common.CommonMiddleware‘,
‘django.middleware.csrf.CsrfViewMiddleware‘,
‘django.contrib.auth.middleware.AuthenticationMiddleware‘,
‘django.contrib.messages.middleware.MessageMiddleware‘,
‘django.middleware.clickjacking.XFrameOptionsMiddleware‘,
"md.middleware.M1",
"md.middleware.M2",
]
5. 缓存
6. 信号
from表单验证