101django_signal_i18n

- 日理万妓 2022-01-10 23:07 180阅读 0赞

signals. 1

middleware. 2

i18n. 2

# signals #

Django定义了一系列信号，代码中可监听信号，收到信号后可触发一系列动作；

内置信号：

from django.db.models.signals import pre\_save, post\_save, \\ \#保存前、保存后

pre\_delete, post\_delete, \\ \#删除前、删除后

m2m\_changed \#多对多

from django.core.signals import request\_started, request\_finished \#请求开始、请求结束

mysite/books/signals.py

def my\_callback(sender, \*\*kwargs): \#方式1

print('request finished')

request\_finished.connect(my\_callback)

@receiver(pre\_save, sender=Publisher) \#方式2

def my\_handler(sender, \*\*kwargs):

print('do sth action')

mysite/books/apps.py

class BooksConfig(AppConfig):

name = 'books'

def ready(self):

from . import signals

输出：

>>> p = Publisher.objects.create(name='jowin',address='jowin',city='jowin',state\_province='jowin',country='cn',website='test')

do sth action

\[15/Jan/2019 14:11:27\] "GET /favicon.ico HTTP/1.1" 404 2174

request finished

# middleware #

mysite/mysite/middlewares.py

import os

from django.http import HttpResponse

class DemoMiddleware:

IN\_DEMO\_MODE = os.environ.get('DEMO\_MODE', False)

SAFE\_METHOD = ('GET', 'HEAD')

def \_\_init\_\_(self, get\_response):

self.get\_response = get\_response

def \_\_call\_\_(self, request):

if request.method not in self.SAFE\_METHOD:

return HttpResponse('in demo mode, only safe method only')

return self.get\_response(request)

mysite/mysite/settings.py

MIDDLEWARE = \[

'mysite.middlewares.DemoMiddleware',

![1.jpg][]

# i18n #

mysite/mysite/settings.py

LANGUAGE\_CODE = 'zh-CN'

LOCALE\_PATHS = \[os.path.join(BASE\_DIR, 'locale')\] \#建mysite/locale/zh路径，不是py包

mysite/books/views.py

from django.utils.translation import ugettext as \_

return HttpResponse(\_('add successed'))

(webproject) C:\\webproject\\mysite>python manage.py makemessages \#生成翻译文件

mysite/locale/zh/LC\_MESSAGES/django.po \#编写翻译

\#: .\\books\\views.py:49

msgid "add successed"

msgstr "fuck,你妹"

(webproject) C:\\webproject\\mysite>python manage.py compilemessages \#编译翻译文件

mysite/books/templates/books\_add.html \#模板中使用

\{% load i18n %\}

\{% trans "add successed" %\}

# settings #

ALLOWED\_HOSTS = \[\] \#在其它主机上部署，通过网络访问；DEBUG = False同时设置ALLOWED\_HOSTS = \['\*'\]

APPEND\_SLASH = True \#在请求的路径上自动加上/

CACHES = \#使用的缓存，redis|memcached，默认用内存

DATABASES = \[\] \#默认sqlite

DEBUG = True \#默认开启，开发时自动reload，静态文件django提供serve

EMAIL\_HOST

FIXTURE\_DIRS = \[os.path.join(BASE\_DIR,’fixture’)\] \#DB初始化时提供数据

INSTALLED\_APPS = \[\] \#

LOGING =

MIDDLEWARE\_CLASSES = \[\]

SECRET\_KEY = \#项目中所有用到的加密都要此字串，如session

TEMPLATES = \[\] \#

MEDIA\_ROOT =

MEDIA\_URL = \#与用户上传文件有关

AUTH\_USER\_MODEL = “accounts/login” \#auth相关，AUTH\_USER\_MODEL = 'users.UserProfile'用自定义的模型

AUTHENTICATION\_BACKENDS = \[‘django.contrib.auth.backends.ModelBackend’\] \#插件，用于扩展，可用其它认证方式

LOGOUT\_REDIRECT\_URL = None

SESSION\_COOKIE\_AGE = 1209600

SESSION\_COOKIE\_DOMAIN = None \#session在指定域名下生效

SESSION\_COOKIE\_PATH = “/” \#session生效的路径，大项目用不同的路径区分

SESSION\_COOKIE\_NAME = “sessionid”

SESSION\_ENGINE = “django.contrib.sessions.backends.db” \#可设为redis|memcached或文件，默认db

SESSION\_EXPIRE\_AT\_BROWSER\_CLOSE = False \#用户browser关闭时，session过期

SESSION\_FILE\_PATH = None

STATIC\_ROOT = “/var/www/html/example.com/static” \#静态文件在nginx的路径

STATIC\_URL = “/static/” \#访问静态文件用到的url前缀

STATICFILES\_DIRS = \[os.path.join(BASE\_DIR, 'static'),\] \#python manage.py collectstatic将此路径下的静态文件复制一份到STATIC\_ROOT下；django仅在开发模式下能对外提供静态文件，DEBUG=False不再对外提供静态文件，需要用collectstatic命令来收集静态文件并交由其它静态文件服务器来提供

\# LANGUAGE\_CODE = 'en-us'

LANGUAGE\_CODE = 'zh-hans'

\# TIME\_ZONE = 'UTC'

TIME\_ZONE = 'Asia/Shanghai'

USE\_I18N = True

USE\_L10N = True

\# USE\_TZ = True \#使用国际时间

USE\_TZ = False \#使用本地时间

转载于:https://blog.51cto.com/jowin/2394794

[1.jpg]: https://s1.51cto.com/images/20190515/1557888606499658.jpg?x-oss-process=image/watermark,size_16,text_QDUxQ1RP5Y2a5a6i,color_FFFFFF,t_100,g_se,x_10,y_10,shadow_90,type_ZmFuZ3poZW5naGVpdGk=