视图之间共享并在AppConfig中初始化的变量 [英] A variable shared between views and initialized in AppConfig

问题描述

我想要一个变量，该变量在应用程序启动时初始化，并且可以从视图中访问该变量:

I want to have a variable which I initialize as the application startup and to which I get get access from the views:

# my_app/my_config.py

class WebConfig(AppConfig):
    name = '....'
    verbose_name = '....'

    def ready(self):
        print('loading...')
        warnings.filterwarnings("ignore")
        my_var = {}


  # my_app/views.py 

  def index(request):
    # my_var isn't accessible 

我无法将 my_var 存储到会话中，因为该会话在WebConfig中不可用.

I can't store my_var into the session because the session isn't available at WebConfig.

那我该怎么办?

推荐答案

在 my_config 中的模块级别定义 my_var ，然后将其导入观看次数:

Define the my_var at the module level in the my_config and then import it in the views:

my_app/my_config.py

my_var = None

class WebConfig(AppConfig):
    ...
    def ready(self):
        global my_var
        my_var = {}

my_app/views.py

from my_app.my_config import my_var

def index(request):
    print my_var

请注意 global 关键字.

Note the global keyword.

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