REST framework Official Tutorial 6 bug

[YUN TANG]

I've been following the official tutorial until 6-viewsets-and-routers/

After I changed the urls.py to

router = DefaultRouter()

router.register(r'snippets', views.SnippetViewSet)
router.register(r'users', views.UserViewSet)

# The API URLs are now determined automatically by the router
# Additionally, we include the login URLs for the browsable API.
urlpatterns = [
    url(r'^', include(router.urls)),
]

I got an error: 

TypeError: SnippetViewSet() received an invalid keyword 'renderer_class'

Please help. 

[Xavier Ordoquy]

Hi,

The tutorial has no mention of renderer_class but has renderer_classes (note the extra ES at the end).

Regards,

Xavier.

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[YUN TANG]

hi Thanks for your reply. 

Now i've fixed that issue, and i'm getting a new one....

Unhandled exception in thread started by <function check_errors.<locals>.wrapper at 0x000002C71F682BF8>

Traceback (most recent call last):

  File "C:\Tools\Anaconda3\envs\django-env\lib\site-packages\django\urls\resolvers.py", line 105, in _compile

    return re.compile(regex, re.UNICODE)

  File "C:\Tools\Anaconda3\envs\django-env\lib\re.py", line 233, in compile

    return _compile(pattern, flags)

  File "C:\Tools\Anaconda3\envs\django-env\lib\re.py", line 301, in _compile

    p = sre_compile.compile(pattern, flags)

  File "C:\Tools\Anaconda3\envs\django-env\lib\sre_compile.py", line 562, in compile

    p = sre_parse.parse(p, flags)

  File "C:\Tools\Anaconda3\envs\django-env\lib\sre_parse.py", line 855, in parse

    p = _parse_sub(source, pattern, flags & SRE_FLAG_VERBOSE, 0)

  File "C:\Tools\Anaconda3\envs\django-env\lib\sre_parse.py", line 416, in _parse_sub

    not nested and not items))

  File "C:\Tools\Anaconda3\envs\django-env\lib\sre_parse.py", line 759, in _parse

    raise source.error(err.msg, len(name) + 1) from None

sre_constants.error: redefinition of group name 'format' as group 2; was group 1 at position 40

During handling of the above exception, another exception occurred:

Traceback (most recent call last):

  File "C:\Tools\Anaconda3\envs\django-env\lib\site-packages\django\utils\autoreload.py", line 228, in wrapper

    fn(*args, **kwargs)

  File "C:\Tools\Anaconda3\envs\django-env\lib\site-packages\django\core\management\commands\runserver.py", line 125, in inner_run

    self.check(display_num_errors=True)

  File "C:\Tools\Anaconda3\envs\django-env\lib\site-packages\django\core\management\base.py", line 359, in check

    include_deployment_checks=include_deployment_checks,

  File "C:\Tools\Anaconda3\envs\django-env\lib\site-packages\django\core\management\base.py", line 346, in _run_checks

    return checks.run_checks(**kwargs)

  File "C:\Tools\Anaconda3\envs\django-env\lib\site-packages\django\core\checks\registry.py", line 81, in run_checks

    new_errors = check(app_configs=app_configs)

  File "C:\Tools\Anaconda3\envs\django-env\lib\site-packages\django\core\checks\urls.py", line 16, in check_url_config

    return check_resolver(resolver)

  File "C:\Tools\Anaconda3\envs\django-env\lib\site-packages\django\core\checks\urls.py", line 26, in check_resolver

    return check_method()

  File "C:\Tools\Anaconda3\envs\django-env\lib\site-packages\django\urls\resolvers.py", line 255, in check

    warnings.extend(check_resolver(pattern))

  File "C:\Tools\Anaconda3\envs\django-env\lib\site-packages\django\core\checks\urls.py", line 26, in check_resolver

    return check_method()

  File "C:\Tools\Anaconda3\envs\django-env\lib\site-packages\django\urls\resolvers.py", line 255, in check

    warnings.extend(check_resolver(pattern))

  File "C:\Tools\Anaconda3\envs\django-env\lib\site-packages\django\core\checks\urls.py", line 26, in check_resolver

    return check_method()

  File "C:\Tools\Anaconda3\envs\django-env\lib\site-packages\django\urls\resolvers.py", line 255, in check

    warnings.extend(check_resolver(pattern))

  File "C:\Tools\Anaconda3\envs\django-env\lib\site-packages\django\core\checks\urls.py", line 26, in check_resolver

    return check_method()

  File "C:\Tools\Anaconda3\envs\django-env\lib\site-packages\django\urls\resolvers.py", line 172, in check

    warnings = self._check_pattern_startswith_slash()

  File "C:\Tools\Anaconda3\envs\django-env\lib\site-packages\django\urls\resolvers.py", line 140, in _check_pattern_startswith_slash

    regex_pattern = self.regex.pattern

  File "C:\Tools\Anaconda3\envs\django-env\lib\site-packages\django\urls\resolvers.py", line 93, in __get__

    instance.__dict__['regex'] = self._compile(instance._regex)

  File "C:\Tools\Anaconda3\envs\django-env\lib\site-packages\django\urls\resolvers.py", line 109, in _compile

    (regex, six.text_type(e))

django.core.exceptions.ImproperlyConfigured: "^snippets\.(?P<format>[a-z0-9]+)/?\.(?P<format>[a-z0-9]+)/?$" is not a valid regular expression: redefinition of group name 'format' as group 2; was group 1 at position 40

在 2017年11月16日星期四 UTC+8下午9:31:29，Xavier Ordoquy写道：

Xavier.

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[Felipe Rodrigues]

Probably you're facing this issue https://github.com/encode/django-rest-framework/issues/1337

Felipe V. Rodrigues felipevr.com

Xavier.

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