1，cookie技术视图views里面：def index(request): #获取请求中的cookie num = request.COOKIES.get('num') if num: num = str(int(num) + 1) else: num = '1' response = render(request, 'teacher/index.html', context={'num':num})
#设置cookie
response.set_cookie('num', num) return response
2,session技术
def index(request): #获取请求中的cookie name = request.session.get('name') return render(request, 'teacher/index.html', context={'name': name})
def login(request): if request.method == 'POST': username = request.POST.get('username', '') password = request.POST.get('password', '') if username == 'xinlan' and password == '123456': #首页检查有没有name，没有name就显示未登录，有name就显示用户名 request.session['name'] = username request.session.set_expiry(10) #过期时间
#跳转到首页面 return redirect(reverse('teacher:index')) return render(request, 'teacher/login.html')
安全退出views：
def logout(request): request.session.flush() return redirect(reverse('teacher:index'))
index：
<a href="{% url 'teacher:logout' %}">安全退出</a>
urls：
path('logout/', views.logout, name='logout'),
3，form表单app--teacher 下新建forms.py文件
4，模型表单
过滤器
@register.simple_tag()def add_class(field, class_str): return field.as_widget(attrs={'class': class_str})
models：
class Student(models.Model): name = models.CharField('姓名', max_length=20) age = models.SmallIntegerField(default=0) sex = models.SmallIntegerField('性别', default=1) qq = models.CharField(max_length=20, unique=True, null=True, error_messages={'unique':'qq号码重复！'}) phone = models.CharField(max_length=20, unique=True, null=True) grade = models.ForeignKey('Grade', on_delete=models.SET_NULL, null=True) c_time = models.DateTimeField(verbose_name='创建时间', auto_now_add=True) e_time = models.DateTimeField(verbose_name="编辑时间", auto_now=True) is_deleted = models.BooleanField(default=False) def __str__(self): return '%s-%s' % (self.name, self.age)
转载于:https://www.cnblogs.com/wdty/p/10482619.html
