django form表单组建使用及CBV模式
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一、FBV和CBV FBV:是视图函数以函数的方式写逻辑代码 CBV:是视图以类的方式写逻辑代码 如CBV: views.py from django.shortcuts import render,HttpResponse,redirect from django.views import View from django.views.decorators.csrf import csrf_exempt,csrf_protect from django.utils.decorators import method_decorator from app01 import models class LoginView(View): @method_decorator(csrf_exempt) def dispatch(self, request, *args, **kwargs): return super(LoginView, self).dispatch(request,*args,**kwargs) def get(self, request, *args, **kwargs): return render(request, ‘login.html‘) def post(self,request, *args, **kwargs): user = request.POST.get(‘user‘) pwd = request.POST.get(‘pwd‘) obj = models.UserInfo.objects.filter(username=user,password=pwd).first() if obj: request.session[‘user_info‘] = {‘id‘: obj.id, ‘username‘: obj.username} return redirect(‘/users.html‘) return render(request, ‘login.html‘, {‘msg‘: ‘去你的‘}) 如FBV: views.py def register(request): if request.method == "GET": form = RegisterForm() return render(request, ‘register.html‘, {‘form‘: form}) else: response = {‘status‘: True, ‘data‘: None, ‘msg‘: None} form = RegisterForm(request.POST) if form.is_valid(): print(form.cleaned_data) else: response[‘status‘] = False response[‘msg‘] = form.errors return HttpResponse(json.dumps(response)) 二、form表单组建使用 导入forms模块 from django.forms import Form from django.forms import fields from django.forms import widgets #创建表单类 class UserForm(Form): username = fields.CharField( required=True, error_messages={‘required‘: ‘用户名不能为空‘}, widget = widgets.TextInput(attrs={‘class‘: ‘form-control‘}) ) password = fields.CharField( required=True, error_messages={‘required‘: ‘邮箱不能为空‘, ‘invalid‘: ‘邮箱格式错误‘}, widget = widgets.TextInput(attrs={‘class‘: ‘form-control‘}) ) ut_id = fields.ChoiceField( choices = [], widget = widgets.Select(attrs={‘class‘: ‘form-control‘}) ) role_id = fields.MultipleChoiceField( choices=[], widget=widgets.SelectMultiple(attrs={‘class‘: ‘form-control‘}) ) def __init__(self, *args, **kwargs): super(UserForm,self).__init__(*args,**kwargs) self.fields[‘ut_id‘].choices = models.UserType.objects.values_list(‘id‘,‘title‘) self.fields[‘role_id‘].choices = models.Role.objects.values_list(‘id‘,‘caption‘) 注: username, password,渲染到页面是input标签属性的name值 fields.CharField表示输入文本类型, fields.ChoiceField表示单选下拉框 fields.MultipleChoiceField表示多选下拉框 required=True表示必填选项 error_messages={‘required‘: ‘用户名不能为空‘}表示错误提示 widget = widgets.TextInput(attrs={‘class‘: ‘form-control‘})表示增加class属性
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