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
form表单对页面渲染
views.py
class AddUserView(AuthView, View):
def get(self, request, *args, **kwargs):
form = UserForm()
return render(request, 'add_user.html', {'form': form})
def post(self,request,*args,**kwargs):
form = UserForm(data=request.POST)
if form.is_valid():
role_id_list = form.cleaned_data.pop('role_id')
obj = models.UserInfo.objects.create(**form.cleaned_data)
obj.rl.add(*role_id_list)
return redirect('/users.html')
else:
print(form.errors)
return render(request, 'add_user.html', {'form': form})
add_user.html
Title
添加用户
{% csrf_token %}
用户名: {{ form.username }} {{ form.errors.username.0 }}
密码: {{ form.password }} {{ form.errors.password.0 }}
用户类型: {{ form.ut_id }} {{ form.errors.ut_id.0 }}
角色: {{ form.role_id }} {{ form.errors.role_id.0 }}
