會(huì)話跟蹤

  settings.py
  # 允許session中可以保存普通對(duì)象[Django通過(guò)內(nèi)建的模塊自動(dòng)操作序列化]
  SESSION_SERIALIZER = 'django.contrib.sessions.serializers.PickleSerializer'

數(shù)據(jù)緩存到redis數(shù)據(jù)庫(kù)

  settings.py
  # SESSION 數(shù)據(jù)緩存到redis數(shù)據(jù)庫(kù)
  SESSION_ENGINE = "django.contrib.sessions.backends.cache"
  SESSION_CACHE_ALIAS = "default"
---
一個(gè)小案例（work/day06中有體現(xiàn)）
#在子項(xiàng)目中新建tools.py 文件
# 導(dǎo)入需要的模塊
from django.core.cache import cache
from . import models

def cache_index(change=False):
   print('從redis中查詢數(shù)據(jù)')
   a_list = cache.get('article_list')
   if a_list is None or change == True:
       print('去數(shù)據(jù)庫(kù)中查找數(shù)據(jù)')
       a_list = models.Article.objects.all()
       print('將查詢到的數(shù)據(jù)加載到緩存中')
       cache.set('article_list', a_list)
       return a_list
#在view.py 中導(dǎo)入tools.py 
def articel_publish(request):
      '''
         發(fā)表文章,發(fā)表文章后需要重新從數(shù)據(jù)庫(kù)讀取有關(guān)文章的信息加載到redis數(shù)據(jù)庫(kù)中
    :param request:
   :return:
    '''
if request.method == 'GET':
    try:
        author = request.session['login_user']
    except:
        return render(request, 'blog/login.html', {'err_msg': '你還沒(méi)有登錄,不能發(fā)表文章'})
    else:
        return render(request, 'blog/article_publish.html', {})
if request.method == 'POST':
    title = request.POST['title']
    content = request.POST['content']
    author = request.session['login_user']

    # 保存數(shù)據(jù)到數(shù)據(jù)庫(kù)
    article = models.Article(title=title, content=content, author=author)
    article.save()

    ## 緩存到django-redis
   ` tools.cache_index(True)`

    # 跳轉(zhuǎn)到詳情頁(yè)面
    return redirect(reverse('blog:articledetail', kwargs={'article_id': article.id}))

連接數(shù)據(jù)庫(kù)

在models.py 中創(chuàng)建模型類 然后連接數(shù)據(jù)庫(kù)
  settings.py
  import pymysql
  pymysql.install_as_MySQLdb()
  settings.py
    DATABASES = {
      'default': {
          'ENGINE': 'django.db.backends.mysql',
          'NAME': 'py1712_shopping',
          'USER': 'root',
          'PASSWORD': 'root',
      }
  }

數(shù)據(jù)庫(kù)同步命令

  python manage.py makemigrations 生成SQL語(yǔ)句
  python manage.py migrate 寫(xiě)入數(shù)據(jù)庫(kù)

管理子項(xiàng)目靜態(tài)文件的模塊

  settings.py
   INSTALLED_APPS = ['子項(xiàng)目名稱']

路由訪問(wèn)端口你操作

  settings.py
  ALLOWED_HOSTS = [ '*' ]
  啟動(dòng)項(xiàng)目：python manage.py runserver0.0.0.0:8000
  0.0.0.0:可以匹配任何IP端口

對(duì)根項(xiàng)目下的static文件夾管理

  settings.py
  STATICFILES_DIRS = [
      BASE_DIR + '/static/'
  ]