Question

我已经看到很多关于如何在项目之外使用django模型的答案。但我没有成功。我试图实现this回答，但是我收到了错误。我创建了一个新文件＆＃34; script.py＆＃34;在我的应用程序内

script.py

from django.conf import settings
settings.configure(
    DATABASE_ENGINE = 'sqlite3',
    DATABASE_NAME = '/home/shivam/study/Python/automation/project/db.sqlite3',
    DATABASE_USER = '',
    DATABASE_PASSWORD = '',
    DATABASE_HOST = '',
    DATABASE_PORT = '',
    TIME_ZONE = 'America/New_York',
)
from models import *

当我运行此脚本时，出现错误。

Traceback (most recent call last):
  File "script.py", line 11, in <module>
    from models import *
  File "/home/shivam/study/Python/automation/project/videos/models.py", line 11, in <module>
    class video(models.Model):
  File "/home/shivam/study/Python/automation/env/local/lib/python2.7/site-packages/django/db/models/base.py", line 105, in __new__
    app_config = apps.get_containing_app_config(module)
  File "/home/shivam/study/Python/automation/env/local/lib/python2.7/site-packages/django/apps/registry.py", line 237, in get_containing_app_config
    self.check_apps_ready()
  File "/home/shivam/study/Python/automation/env/local/lib/python2.7/site-packages/django/apps/registry.py", line 124, in check_apps_ready
    raise AppRegistryNotReady("Apps aren't loaded yet.")
django.core.exceptions.AppRegistryNotReady: Apps aren't loaded yet.

有人可以帮我这个吗？

Answer 1

您需要的是可导入的设置。

import os
import django
os.environ["DJANGO_SETTINGS_MODULE"] = 'project.settings'
django.setup()
from .models import

另一种通过django shell调用脚本的方法：

python manage.py shell < script.py

Answer 2

正如例外情况所说，没有安装任何应用程序，你还没有型号。

from django.conf import settings
settings.configure(
    DATABASE_ENGINE = 'sqlite3',
    DATABASE_NAME = '/home/shivam/study/Python/automation/project/db.sqlite3',
    # ....
    INSTALLED_APPS=["myapp","myotherapp"]

)
from myapp.models import *

Answer 3

以下解决方案来自位于manage.py所在目录中的脚本：

override func prepare(for segue: UIStoryboardSegue, sender: Any?) {

    if segue.identifier == "showEventDetail" {

        if let IndexPath = self.tableView.indexPathForSelectedRow {

            // we're segueing to a Tab Bar Controller
            if let tabBarVC = segue.destination as? UITabBarController {

                // get the first view controller of the Tab Bar Controller
                // *that* is where you want to "pass" your data
                if let controller = tabBarVC.viewControllers?.first as? eventDetailViewController {

                    // either should work
                    controller.inTradeShowID = (events?[IndexPath.row].tradeshowID!)!
                    controller.viaSegue = (events?[IndexPath.row].tradeshowID!)!

                }  //end if let controller = tabBarVC.viewControllers?.first as? eventDetailViewController

            }  //end if let tabBarVC = segue.destination as? UITabBarController

        }  //end if let IndexPath = self.tableView.indexPathForSelectedRow

    }  //end if segue.identifier == "showEventDetail"
}

将Demo替换为您的应用名称，并为您的应用添加正确的数据库配置。这个解决方案适用于Django 1.9。

从新脚本访问django模型

3 个答案: