#2134: tg_format not working
------------------------+---------------------------------------------------
Reporter: percious | Owner: faide
Type: defect | Status: new
Priority: high | Milestone: 2.0b3
Component: TurboGears | Version: trunk
Severity: major | Keywords:
------------------------+---------------------------------------------------
tg_format is throwing some kind of mime type error as follows:
{{{
URL: http://localhost:8080/admin/users?tg_format=json
File '/Users/percious/oss/tgdev/lib/python2.5/site-
packages/WebError-0.9.1-py2.5.egg/weberror/evalexception.py', line 428 in
respond
app_iter = self.application(environ, detect_start_response)
File '/Users/percious/oss/tgdev/src/tg2/tg/configuration.py', line 525 in
remover
return app(environ, start_response)
File '/Users/percious/oss/tgdev/lib/python2.5/site-
packages/repoze.tm2-1.0a3-py2.5.egg/repoze/tm/__init__.py', line 19 in
__call__
result = self.application(environ, save_status_and_headers)
File '/Users/percious/oss/tgdev/lib/python2.5/site-
packages/repoze.who-1.0.9-py2.5.egg/repoze/who/middleware.py', line 107 in
__call__
app_iter = app(environ, wrapper.wrap_start_response)
File '/Users/percious/oss/tgdev/lib/python2.5/site-
packages/ToscaWidgets-0.9.5dev_20081026-py2.5.egg/tw/core/middleware.py',
line 36 in __call__
return self.wsgi_app(environ, start_response)
File '/Users/percious/oss/tgdev/lib/python2.5/site-
packages/ToscaWidgets-0.9.5dev_20081026-py2.5.egg/tw/core/middleware.py',
line 59 in wsgi_app
resp = req.get_response(self.application)
File 'build/bdist.macosx-10.3-i386/egg/webob/__init__.py', line 1307 in
get_response
File 'build/bdist.macosx-10.3-i386/egg/webob/__init__.py', line 1275 in
call_application
File '/Users/percious/oss/tgdev/lib/python2.5/site-
packages/ToscaWidgets-0.9.5dev_20081026-py2.5.egg/tw/core/resource_injector.py',
line 67 in _injector
resp = req.get_response(app)
File 'build/bdist.macosx-10.3-i386/egg/webob/__init__.py', line 1307 in
get_response
File 'build/bdist.macosx-10.3-i386/egg/webob/__init__.py', line 1275 in
call_application
File '/Users/percious/oss/tgdev/lib/python2.5/site-
packages/Beaker-1.1.2-py2.5.egg/beaker/middleware.py', line 81 in __call__
return self.app(environ, start_response)
File '/Users/percious/oss/tgdev/lib/python2.5/site-
packages/Beaker-1.1.2-py2.5.egg/beaker/middleware.py', line 159 in
__call__
return self.wrap_app(environ, session_start_response)
File '/Users/percious/oss/tgdev/lib/python2.5/site-
packages/Routes-1.10.1-py2.5.egg/routes/middleware.py', line 118 in
__call__
response = self.app(environ, start_response)
File '/Users/percious/oss/tgdev/lib/python2.5/site-
packages/Pylons-0.9.7rc4-py2.5.egg/pylons/wsgiapp.py', line 117 in
__call__
response = self.dispatch(controller, environ, start_response)
File '/Users/percious/oss/tgdev/lib/python2.5/site-
packages/Pylons-0.9.7rc4-py2.5.egg/pylons/wsgiapp.py', line 316 in
dispatch
return controller(environ, start_response)
File '/Users/percious/oss/tgdev/src/tgtest/tgtest/lib/base.py', line 36 in
__call__
return TGController.__call__(self, environ, start_response)
File '/Users/percious/oss/tgdev/lib/python2.5/site-
packages/Pylons-0.9.7rc4-py2.5.egg/pylons/controllers/core.py', line 204
in __call__
response = self._dispatch_call()
File '/Users/percious/oss/tgdev/lib/python2.5/site-
packages/Pylons-0.9.7rc4-py2.5.egg/pylons/controllers/core.py', line 159
in _dispatch_call
response = self._inspect_call(func)
File '/Users/percious/oss/tgdev/lib/python2.5/site-
packages/Pylons-0.9.7rc4-py2.5.egg/pylons/controllers/core.py', line 95 in
_inspect_call
result = self._perform_call(func, args)
File '/Users/percious/oss/tgdev/src/tg2/tg/controllers.py', line 508 in
_perform_call
self, controller, params, remainder=remainder)
File '/Users/percious/oss/tgdev/src/tg2/tg/controllers.py', line 118 in
_perform_call
response = self._render_response(controller, output)
File '/Users/percious/oss/tgdev/src/tg2/tg/controllers.py', line 222 in
_render_response
controller.decoration.lookup_template_engine(pylons.request)
File '/Users/percious/oss/tgdev/src/tg2/tg/decorators.py', line 104 in
lookup_template_engine
assert '/' in tg_format, 'Invalid tg_format: must be a MIME type'
AssertionError: Invalid tg_format: must be a MIME type
}}}
here is a look at my controller function:
{{{
@expose('tgtest.templates.admin.users')
@expose('json')
def users(self, tg_format='html', **kw):
if tg_format=='application/javascript':
pylons.response.content_type = 'json'
return user_table_filler.get_value(**kw)
pylons.c.widget = user_table
return dict()
}}}
this is an important one since the docs use this technique:
http://turbogears.org/2.0/docs/main/Wiki20/JSONMochiKit.html?highlight=json
Also, if you pass in tg_format=application/javascript, you get this
marvelous dump:
{{{
URL: http://localhost:8080/admin/users?tg_format=application/javascript
File '/Users/percious/oss/tgdev/lib/python2.5/site-
packages/WebError-0.9.1-py2.5.egg/weberror/evalexception.py', line 428 in
respond
app_iter = self.application(environ, detect_start_response)
File '/Users/percious/oss/tgdev/src/tg2/tg/configuration.py', line 525 in
remover
return app(environ, start_response)
File '/Users/percious/oss/tgdev/lib/python2.5/site-
packages/repoze.tm2-1.0a3-py2.5.egg/repoze/tm/__init__.py', line 19 in
__call__
result = self.application(environ, save_status_and_headers)
File '/Users/percious/oss/tgdev/lib/python2.5/site-
packages/repoze.who-1.0.9-py2.5.egg/repoze/who/middleware.py', line 107 in
__call__
app_iter = app(environ, wrapper.wrap_start_response)
File '/Users/percious/oss/tgdev/lib/python2.5/site-
packages/ToscaWidgets-0.9.5dev_20081026-py2.5.egg/tw/core/middleware.py',
line 36 in __call__
return self.wsgi_app(environ, start_response)
File '/Users/percious/oss/tgdev/lib/python2.5/site-
packages/ToscaWidgets-0.9.5dev_20081026-py2.5.egg/tw/core/middleware.py',
line 59 in wsgi_app
resp = req.get_response(self.application)
File 'build/bdist.macosx-10.3-i386/egg/webob/__init__.py', line 1307 in
get_response
File 'build/bdist.macosx-10.3-i386/egg/webob/__init__.py', line 1275 in
call_application
File '/Users/percious/oss/tgdev/lib/python2.5/site-
packages/ToscaWidgets-0.9.5dev_20081026-py2.5.egg/tw/core/resource_injector.py',
line 67 in _injector
resp = req.get_response(app)
File 'build/bdist.macosx-10.3-i386/egg/webob/__init__.py', line 1307 in
get_response
File 'build/bdist.macosx-10.3-i386/egg/webob/__init__.py', line 1275 in
call_application
File '/Users/percious/oss/tgdev/lib/python2.5/site-
packages/Beaker-1.1.2-py2.5.egg/beaker/middleware.py', line 81 in __call__
return self.app(environ, start_response)
File '/Users/percious/oss/tgdev/lib/python2.5/site-
packages/Beaker-1.1.2-py2.5.egg/beaker/middleware.py', line 159 in
__call__
return self.wrap_app(environ, session_start_response)
File '/Users/percious/oss/tgdev/lib/python2.5/site-
packages/Routes-1.10.1-py2.5.egg/routes/middleware.py', line 118 in
__call__
response = self.app(environ, start_response)
File '/Users/percious/oss/tgdev/lib/python2.5/site-
packages/Pylons-0.9.7rc4-py2.5.egg/pylons/wsgiapp.py', line 117 in
__call__
response = self.dispatch(controller, environ, start_response)
File '/Users/percious/oss/tgdev/lib/python2.5/site-
packages/Pylons-0.9.7rc4-py2.5.egg/pylons/wsgiapp.py', line 316 in
dispatch
return controller(environ, start_response)
File '/Users/percious/oss/tgdev/src/tgtest/tgtest/lib/base.py', line 36 in
__call__
return TGController.__call__(self, environ, start_response)
File '/Users/percious/oss/tgdev/lib/python2.5/site-
packages/Pylons-0.9.7rc4-py2.5.egg/pylons/controllers/core.py', line 204
in __call__
response = self._dispatch_call()
File '/Users/percious/oss/tgdev/lib/python2.5/site-
packages/Pylons-0.9.7rc4-py2.5.egg/pylons/controllers/core.py', line 159
in _dispatch_call
response = self._inspect_call(func)
File '/Users/percious/oss/tgdev/lib/python2.5/site-
packages/Pylons-0.9.7rc4-py2.5.egg/pylons/controllers/core.py', line 95 in
_inspect_call
result = self._perform_call(func, args)
File '/Users/percious/oss/tgdev/src/tg2/tg/controllers.py', line 508 in
_perform_call
self, controller, params, remainder=remainder)
File '/Users/percious/oss/tgdev/src/tg2/tg/controllers.py', line 118 in
_perform_call
response = self._render_response(controller, output)
File '/Users/percious/oss/tgdev/src/tg2/tg/controllers.py', line 222 in
_render_response
controller.decoration.lookup_template_engine(pylons.request)
File '/Users/percious/oss/tgdev/src/tg2/tg/decorators.py', line 114 in
lookup_template_engine
engine, template, exclude_names = self.engines[content_type]
KeyError: ''
}}}
On a side-note, I'd like to add the ability to replace
"page?tg_format=xxx" with "page.xxx" This seems much cleaner and more
restful. What say ye?
--
Ticket URL: <http://trac.turbogears.org/ticket/2134>
TurboGears <http://www.turbogears.org/>
TurboGears front-to-back web development
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