柚子快報(bào)激活碼778899分享：前端 sql 開發(fā)實(shí)踐6

http://yzkb.51969.com/

要求：

① 頁面寫入超鏈接，獲取所有數(shù)據(jù)item，顯示在另一個(gè)頁面，1min內(nèi)，即使數(shù)據(jù)有變化，頁面內(nèi)容不變，1min后點(diǎn)擊超鏈接可獲取最新信息；

② 使用middleware完成用戶請(qǐng)求路徑判斷 （request.path）。如果是“/schedule/select/”或“/select/contact/”，判斷是否用戶登錄，否 則重定向到login頁面。

①

結(jié)果：

代碼：

python manage.py startapp pro6_app

注冊(cè)app

path('pro6/', include('pro6_app.urls', namespace="pro6")),

views //

import datetime

from django.core.paginator import Paginator, InvalidPage

from django.shortcuts import render

from django.views.decorators.cache import cache_page

from djangoProject.settings import PAGE_SIZE

from pro6_app.models import Department

def home(request):

return render(request, "home.html")

@cache_page(60)

def show(request):

ds = Department.get_all()

page_num = request.GET.get("page_num", default=1)

paginator = Paginator(ds, PAGE_SIZE)

try:

data = paginator.page(page_num)

except InvalidPage:

data = paginator.page(1)

time = datetime.datetime.now()

return render(request, "show.html", {"data": data, "paginator": paginator, "time": time})

setting //

PAGE_SIZE = 3

urls //

from django.urls import path

from .views import *

app_name = "pro6"

urlpatterns = [

path('home/', home, name="home"),

path('show/', show, name="show"),

]

models //

#?遷移，添加測(cè)試數(shù)據(jù)

from django.db import models

class Department(models.Model):

name = models.CharField(max_length=64, verbose_name="科室")

month = models.CharField(max_length=2, verbose_name="月")

def __str__(self):

return f"{self.name}__{self.month}"

class Meta:

verbose_name = "安排表"

verbose_name_plural = verbose_name + 's'

@classmethod

def get_all(cls):

return cls.objects.all()

admin //

from django.contrib import admin

from pro6_app.models import Department

models = [

Department

]

admin.site.register(models)

templates //

{% for i in data %}

{% endfor %}

②

結(jié)果：

1）未登錄直接進(jìn)入test頁面的contact或select按鈕，會(huì)跳轉(zhuǎn)到登錄頁面

2）正常流程：注冊(cè)成功→登錄成功→test頁面可select或contact（setting設(shè)置token過期時(shí)間是1day）

admin后臺(tái)可見保存的加密后的token即pwd，沒有保存用戶原始密碼。

代碼：

（沿用上述pro6_app, 已注冊(cè)）

models //

# admin 注冊(cè)

class User(models.Model):

name = models.CharField(max_length=32, unique=True, verbose_name="Name")

pwd = models.CharField(max_length=128, verbose_name="Password")

token = models.CharField(max_length=128, null=True)

class Meta:

verbose_name = "網(wǎng)頁用戶"

verbose_name_plural = verbose_name + '們'

def __str__(self):

return self.name

@classmethod

def get_list(cls, **kwargs):

filters = {}

if kwargs.get("name"):

filters["name"] = kwargs.get("name")

if kwargs.get("pwd"):

filters["pwd"] = kwargs.get("pwd")

if kwargs.get("token"):

filters["token"] = kwargs.get("token")

return cls.objects.filter(**filters)

@classmethod

def create_one(cls, **kwargs):

return cls.objects.create(

name=kwargs.get("name"),

pwd=kwargs.get("pwd")

)

views //

#?SESSION_COOKIE_AGE = 3600 * 24 # 60 * 60 * 24

def register(request):

if request.method == "GET":

return render(request, "pro6_regis.html")

if request.method == "POST":

name = request.POST.get("name")

pwd = hash(request.POST.get("pwd"))

User.create_one(**{"name": name, "pwd": pwd})

return redirect(reverse('pro6:login'))

def login(request):

if request.method == "GET":

return render(request, "pro6_login.html")

if request.method == "POST":

name = request.POST.get("name")

pwd = hash(request.POST.get("pwd"))

filters = {

"name": name,

"pwd": pwd

}

users = User.get_list(**filters)

if users:

user = users.first()

md5 = hashlib.md5()

md5.update(name.encode("utf-8"))

token = md5.hexdigest() + str(time.time())

user.token = token

user.save()

response = redirect(reverse('pro6:test'))

response.set_cookie("user_token", token)

return response

else:

return HttpResponse("

Wrong Info..

def test_view(request):

return render(request, "pro6_test.html")

def contact_view(request):

return HttpResponse("

get in touch

def select_view(request):

return HttpResponse("

select it

def del_user_token(request):

response = redirect(reverse('pro6:test'))

response.delete_cookie("user_token")

return response

templates //

register

login

test

select it

contact it

delete user token

urls //

path('regis/', register, name="regis"),

path('login/', login, name="login"),

path('test/', test_view, name="test"),

path('schedule/contact/', contact_view, name='contact'),

path('schedule/select/', select_view, name='select'),

path('del/', del_user_token, name='del'),

middleware //

# setting注冊(cè)

class LoginMiddleWare(MiddlewareMixin):

def process_request(self, request):

target_path = [

'/pro6/schedule/select/',

'/pro6/schedule/contact/'

]

print(request.path)

if request.path in target_path:

print('in judge flag')

try:

user_token = request.COOKIES["user_token"]

users = User.get_list(token=user_token)

print('verified')

if not users:

return HttpResponse("Token expired.")

except:

return redirect(reverse("pro6:login"))

柚子快報(bào)激活碼778899分享：前端 sql 開發(fā)實(shí)踐6

http://yzkb.51969.com/

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