小编dou*_*leo的帖子

这是我的Windows系统上的追溯.

Traceback (most recent call last):
  File "D:\AMD\workspace\steelrumors\manage.py", line 9, in <module>
    django.setup()
  File "D:\AMD\Django\django-django-4c85a0d\django\__init__.py", line 21, in setup
    apps.populate(settings.INSTALLED_APPS)
  File "D:\AMD\Django\django-django-4c85a0d\django\apps\registry.py", line 108, in populate
    app_config.import_models(all_models)
  File "D:\AMD\Django\django-django-4c85a0d\django\apps\config.py", line 197, in import_models
    self.models_module = import_module(models_module_name)
  File "C:\Python27\lib\importlib\__init__.py", line 37, in import_module
    __import__(name)
  File "C:\Python27\lib\site-packages\registration\models.py", line 15, in <module>
    User = get_user_model()
  File "D:\AMD\Django\django-django-4c85a0d\django\contrib\auth\__init__.py", line 135, in get_user_model
    return django_apps.get_model(settings.AUTH_USER_MODEL)
  File "D:\AMD\Django\django-django-4c85a0d\django\apps\registry.py", line 199, in get_model
    self.check_models_ready()
  File "D:\AMD\Django\django-django-4c85a0d\django\apps\registry.py", line 131, in check_models_ready
    raise AppRegistryNotReady("Models aren't loaded yet.")
django.core.exceptions.AppRegistryNotReady: Models …

我正在尝试设置select2单选选项下拉列表的默认值:http://ivaynberg.github.io/select2/.

我有select2下拉工作.但我不知道如何设置默认值.例如,假设值列表是 - test1,test2,test3.如何将"test1"设置为单个选择下拉列表的默认值.

$(function(){
var testData = [{id:0, text:"test1"}, {id:1, text:"test2"}, {id:2, text:"test3"}];

$('#select2customdata').select2({placeholder:"Search Stuff",  data: {results: testData, text:'text'}});

$('#select2customdata').select2().select2("val", "test1");
 });

而html有:

<input type="hidden" id="select2customdata" style="width:300px"> </input>

如您所见,我使用select2("val","some-val")来设置默认值.它对我不起作用.

编辑:我想出了解决方案,如果使用val,必须在选项中有initselection.其他解决方案是使用:

$('#select2customdata').select2("data", {"id": id_val, "text": text_val})

我试图用base64编码/解码一个字符串.coffeescript是否有任何内置支持？我找到了这个库:https://github.com/carlcalderon/Base64.coffee.

在Coffeescript中有更好的方法吗？