一、启动项目：
1 django-admin start mysite1 2 cd mysite1 3 python manage.py startapp loginapp
根据上文敲命令就可以创建好了一个项目结构，之后就是修改配置文件，这里使用的数据库是MySQL的。
二、修改配置文件：
settings.py
1 """
2 Django settings for mysite1 project.
3
4 Generated by ‘django-admin startproject‘ using Django 1.8.
5
6 For more information on this file, see
7 https://docs.djangoproject.com/en/1.8/topics/settings/
8
9 For the full list of settings and their values, see
10 https://docs.djangoproject.com/en/1.8/ref/settings/
11 """
12
13 # Build paths inside the project like this: os.path.join(BASE_DIR, ...)
14 import os
15
16 BASE_DIR = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))
17
18
19 # Quick-start development settings - unsuitable for production
20 # See https://docs.djangoproject.com/en/1.8/howto/deployment/checklist/
21
22 # SECURITY WARNING: keep the secret key used in production secret!
23 SECRET_KEY = ‘u-=+xrj*5cr+z92==pmlct&c2ta+7o8ia8_y!(ne^*538_afr1‘
24
25 # SECURITY WARNING: don‘t run with debug turned on in production!
26 DEBUG = True
27
28 ALLOWED_HOSTS = []
29
30
31 # Application definition
32
33 INSTALLED_APPS = (
34 ‘django.contrib.admin‘,
35 ‘django.contrib.auth‘,
36 ‘django.contrib.contenttypes‘,
37 ‘django.contrib.sessions‘,
38 ‘django.contrib.messages‘,
39 ‘django.contrib.staticfiles‘,
40 ‘loginapp‘
41 )
42
43 MIDDLEWARE_CLASSES = (
44 ‘django.contrib.sessions.middleware.SessionMiddleware‘,
45 ‘django.middleware.common.CommonMiddleware‘,
46 ‘django.middleware.csrf.CsrfViewMiddleware‘,
47 ‘django.contrib.auth.middleware.AuthenticationMiddleware‘,
48 ‘django.contrib.auth.middleware.SessionAuthenticationMiddleware‘,
49 ‘django.contrib.messages.middleware.MessageMiddleware‘,
50 ‘django.middleware.clickjacking.XFrameOptionsMiddleware‘,
51 ‘django.middleware.security.SecurityMiddleware‘,
52 )
53
54 ROOT_URLCONF = ‘mysite1.urls‘
55
56 TEMPLATES = [
57 {
58 ‘BACKEND‘: ‘django.template.backends.django.DjangoTemplates‘,
59 ‘DIRS‘: [],
60 ‘APP_DIRS‘: True,
61 ‘OPTIONS‘: {
62 ‘context_processors‘: [
63 ‘django.template.context_processors.debug‘,
64 ‘django.template.context_processors.request‘,
65 ‘django.contrib.auth.context_processors.auth‘,
66 ‘django.contrib.messages.context_processors.messages‘,
67 ],
68 },
69 },
70 ]
71
72 WSGI_APPLICATION = ‘mysite1.wsgi.application‘
73
74
75 # Database
76 # https://docs.djangoproject.com/en/1.8/ref/settings/#databases
77
78 DATABASES = {
79 ‘default‘: {
80 ‘ENGINE‘: ‘django.db.backends.mysql‘,
81 ‘NAME‘: ‘mysite1‘,
82 ‘USER‘: ‘root‘,
83 ‘HOST‘: ‘127.0.0.1‘,
84 ‘PORT‘: ‘3306‘,
85 }
86 }
87
88
89 # Internationalization
90 # https://docs.djangoproject.com/en/1.8/topics/i18n/
91
92 LANGUAGE_CODE = ‘en-us‘
93
94 TIME_ZONE = ‘UTC‘
95
96 USE_I18N = True
97
98 USE_L10N = True
99
100 USE_TZ = True
101
102
103 # Static files (CSS, JavaScript, Images)
104 # https://docs.djangoproject.com/en/1.8/howto/static-files/
105
106 STATIC_URL = ‘/static/‘
三、创建数据库：
1 mysql -h 127.0.0.1 -u root 2 create database mysite1 3 exit
然后编辑models.py文件：
1 from django.db import models 2 3 # Create your models here. 4 class account(models.Model): 5 username = models.CharField(max_length=20) 6 password = models.CharField(max_length=256)
然后选择创建数据库表结构
1 $ python manage.py migrate # 创建表结构 2 $ python manage.py makemigrations loginapp # 让 Django 知道我们的模型有一些变更 3 $ python manage.py migrate loginapp # 创建表结构
四、编写urls.py文件：
1 from django.conf.urls import include, url 2 from django.contrib import admin 3 from loginapp import views 4 5 urlpatterns = [ 6 # Examples: 7 # url(r‘^$‘, ‘mysite1.views.home‘, name=‘home‘), 8 # url(r‘^blog/‘, include(‘blog.urls‘)), 9 10 url(r‘^admin/‘, include(admin.site.urls)), 11 url(r‘^login/‘, ‘loginapp.views.login‘), 12 url(r‘^main/‘, ‘loginapp.views.main‘), 13 url(r‘^logout/‘, ‘loginapp.views.logout‘), 14 ]
五、最重要的视图函数到了：
views.py
1 # -*- coding:utf-8 -*-
2 import hashlib
3 from django.shortcuts import render
4 from django.http import HttpResponse
5 from models import account
6 # Create your views here.
7 def get_md5(text):
8 md5 = hashlib.md5()
9 d5.update(text)
10 return md5.hexdigest()
11
12 def login(request):
13 user = request.GET["user"]
14 pswd = request.GET["pswd"]
15 #pswd = get_md5(pswd)
16 result = account.objects.get(username=user)
17 try:
18 if pswd == result.password:
19 response = HttpResponse("Welcome %s, Login Success!"%user)
20 response.set_cookie("login_name",user)
21 response.set_cookie("login_code",1)
22 return response
23 else:
24 return HttpResponse("Sorry,Login Failed!")
25 except Excception,ex:
26 return HttpResponse("Sorry,Login Failed!")
27
28
29 def main(request):
30 if "login_code" in request.COOKIES:
31 logincode = request.COOKIES["login_code"]
32 print logincode
33 print type(logincode)
34 if logincode == "1":
35 return HttpResponse("Yes , sir!")
36 else:
37 return HttpResponse("Sorry , sir!")
38
39 def logout(request):
40 user = request.GET["user"]
41 if "login_name" in request.COOKIES:
42 if user == request.COOKIES["login_name"]:
43 response = HttpResponse("ByeBye!")
44 response.set_cookie("login_code",0)
45 return response
46 else:
47 return HttpResponse("Sorry User Error!")
48 else:
49 return HttpResponse("Sorry User Error!")
六、总结：
1、数据库的对象应该是from modles.py import classname 这里就是数据库对象了，然后就是classname.objects.get或者其他操作；
2、get方法获取的是符合条件的数据的一项，是一个数据实例，其属性使用ret.name方式调用；
3、读写cookie，cookie在request.COOKIES中，字典结构，写的事后麻烦一些，需要response = HttpResponse等一类返回响应对象的函数的返回值。然后使用response.ser_cookie(key,value)方式设置，最后return response返回；
原文地址：https://www.cnblogs.com/KevinGeorge/p/8364575.html
时间： 2024-08-05 23:30:09