id	summary	reporter	owner	description	type	status	component	version	severity	resolution	keywords	cc	stage	has_patch	needs_docs	needs_tests	needs_better_patch	easy	ui_ux
25800	IIS ISAPI request throws AppRegistryNotReady: Apps aren't loaded yet.	Ola	nobody	"After deep investigation of why IIS throws ''A server error occurred.  Please contact the administrator.`'' looks like 

{{{

url(r'^render_template/', views.render_template, name=""render_template""),


def render_template(request):
    try:
        logger.error(""test template iis"")
        context = {'foo': 'template'}
        t = template_loader.get_template('webclient/test.html')
        c = RequestContext(request, context)
        return HttpResponse(t.render(c))
    except:
        logger.error(traceback.format_exc())
        return HttpResponse(traceback.format_exc())
}}}

throws 

{{{
Traceback (most recent call last): File ""C:\OMERO.server\lib\python\omeroweb\webclient\views.py"", line 36, in render_template t = template_loader.get_template('webclient/test.html') File ""C:\Python27\lib\site-packages\django\template\loader.py"", line 35, in get_template return engine.get_template(template_name, dirs) File ""C:\Python27\lib\site-packages\django\template\backends\django.py"", line 30, in get_template return Template(self.engine.get_template(template_name, dirs)) File ""C:\Python27\lib\site-packages\django\template\engine.py"", line 167, in get_template template, origin = self.find_template(template_name, dirs) File ""C:\Python27\lib\site-packages\django\template\engine.py"", line 141, in find_template source, display_name = loader(name, dirs) File ""C:\Python27\lib\site-packages\django\template\loaders\base.py"", line 13, in __call__ return self.load_template(template_name, template_dirs) File ""C:\Python27\lib\site-packages\django\template\loaders\base.py"", line 17, in load_template template_name, template_dirs) File ""C:\Python27\lib\site-packages\django\template\loaders\app_directories.py"", line 36, in load_template_source for filepath in self.get_template_sources(template_name, template_dirs): File ""C:\Python27\lib\site-packages\django\template\loaders\app_directories.py"", line 26, in get_template_sources template_dirs = get_app_template_dirs('templates') File ""C:\Python27\lib\site-packages\django\utils\lru_cache.py"", line 125, in wrapper result = user_function(*args, **kwds) File ""C:\Python27\lib\site-packages\django\template\utils.py"", line 122, in get_app_template_dirs for app_config in apps.get_app_configs(): File ""C:\Python27\lib\site-packages\django\apps\registry.py"", line 137, in get_app_configs self.check_apps_ready() File ""C:\Python27\lib\site-packages\django\apps\registry.py"", line 124, in check_apps_ready raise AppRegistryNotReady(""Apps aren't loaded yet."") AppRegistryNotReady: Apps aren't loaded yet.
}}}

Note above error appear only with IIS response rendering template, plain HttpResponse(""string"") or JsonResponse, HttpResponseRedirect works as expected."	Uncategorized	closed	HTTP handling	1.8	Normal	invalid			Unreviewed	0	0	0	0	0	0