ModelForm的简单使用 | Django

# modelform的简单使用
# 1.models.py
    class UserAsk(models.Model):
        name = models.CharField(max_length=20, verbose_name="姓名")
        mobile = models.CharField(max_length=11, verbose_name="手机")
        course_name = models.CharField(max_length=50, verbose_name="课程")
        add_time = models.DateTimeField(auto_add_now=True, verbose_name="添加时间")
# 2.modelform.py
    from django import form
    from operation.models import UserAsk
    import re
    
    class UserAskForm(form.ModelForm):
        class Meta:
            # 指定模型类
            model = UserAsk
            # 指定模型类中字段
            field = [‘name‘, ‘mobile‘, ‘course_name‘]
        
        # 自定义modelform验证,方法以clean开头
        def clean_mobile(self):
            mobile = self.cleaned_data[‘mobile‘]
            REGEX_MOBILE = "^1[138]\d{9}$|^147\d{8}$|^176\d{8}$"
            p = re.compile(REGEX_MOBILE)
            if p.match(mobile):
                return mobile
            else:
                raise forms.ValidationError("手机号码非法", code="mobile_invalid")
            
            
# 3.views.py
    # 添加留言的操作视图
    from django.http import HeetResponse
    from .modelforms import UserAskForm
    class AddUserAskView(View):
        def post(self, request):
            userask_form = UserAskForm(request.POST)
            if userask_form.is_valid():
                # modelform可以直接保存input框输入验证通过的值
                user_ask = userask_form.save(commit=True)
                # 当前表单是页面部分提交，ajax异步请求，所以返回json字符串
                return HttpResponse("{‘status‘:‘success}", content_type=‘application/json‘)
            else:
                return HttpResponse("{‘status‘:‘fail‘, ‘msg‘:{0}}".format(userask_form.errors))
# 4.urls.py
    from .views import AddUserAskView
    ...
    url(r‘^add_ask/$‘, AddUserAskView.as_view(), name="add_ask")