Django框架 之 form組件的鉤子

def foo(request):


    if request.method=="POST":

        regForm=RegForm(request.POST)

        if regForm.is_valid():
            pass
            # 可用數據: regForm.cleaned_data,
            # 將數據插入數據庫表中


        else:
            pass
            # 可用數據: regForm.errors
            # 能夠利用模板渲染講errors嵌套到頁面中返回
            # 也能夠打包到一個字典中,用於ajax返回

    else:
        regForm=RegForm()
    return render(request,"register.html",{"regForm":regForm})

    

    '''
    實例化時:

        self.fields={
            "username":"字段規則對象",
            "password":"字段規則對象",

        }


    is_valid時:

        self._errors = {}
        self.cleaned_data = {}


        #局部鉤子:

        for name, field in self.fields.items():
              try:

                    value = field.clean(value)
                    self.cleaned_data[name] = value
                    if hasattr(self, 'clean_%s' % name):
                        value = getattr(self, 'clean_%s' % name)()
                        self.cleaned_data[name] = value
              except ValidationError as e:
                    self.add_error(name, e)

        # 全局鉤子:

        self.clean()     # def self.clean():return self.cleaned_data

        return  not self.errors    # True或者False


    '''　　

示例：

from django import forms

class LoginForm(forms.Form):
    username = forms.CharField(label='username', max_length=100)
    password = forms.CharField(label='password', max_length=100)
    
    #鉤子函數爲對應字段添加判斷條件
    def clean_username(self):
        if len(self.cleaned_data.get("username"))>5:
            print(self.cleaned_data.get("password"))
            return self.cleaned_data.get("username")
    def clean_password(self):
        pass
    #全局鉤子函數
    def clean(self):
        if self.cleaned_data["password"] == self.cleaned_data["repeat_password"]:
            return self.cleaned_data

　　

以上只是form組件的鉤子簡單介紹，想看具體的form組件介紹，請前往：http://www.cnblogs.com/gaoya666/articles/8762397.html