Django + Heroku + S3: boto -> lokale Variable "region_name" referenziert vor der Zuweisung

Question

Ich bekomme einen sehr merkwürdigen Fehler, der mich seit vielen Stunden wirklich festhielt.

Ich habe meine Bereitstellung mit Heroku zum ersten Mal durchgeführt und verwende S3 für Media-Dateien. Das erste, was mir auffiel, war, dass ich nach der Installation von boto und django-storage-redux keine Migration erfolgreich hatte, nicht sicher warum. Jedenfalls ging ich weiter.

Meine Konfigurationen schienen in AWS zu funktionieren, da meine statischen Dateien beim ersten Mal in meinen Bucket gingen, aber ich habe einige Img-Dateien nicht durchkommen lassen, also entschied ich mich, boto und django-registration-redux neu zu installieren (um zu sehen, ob es richtig migriert).

Am Ende der Migration nie wie erwartet, und jetzt bin ich folgende Fehlermeldung erhalten:

UnboundLocalError: local variable 'region_name' referenced before assignment in meinem BOTO Paket, wenn collectstatic.

Ich verstehe nicht, warum migrieren nicht funktioniert und warum ich begann, diesen Fehler zu bekommen, wenn ich Boto und Django-Storage-Redux neu installierte.

terminal:

You have requested to collect static files at the destination 
location as specified in your settings. 

This will overwrite existing files! 
Are you sure you want to do this? 

Type 'yes' to continue, or 'no' to cancel: yes 
Traceback (most recent call last): 
    File "/Users/Alex/Desktop/Allugare/src/manage.py", line 22, in <module> 
    execute_from_command_line(sys.argv) 
    File "/Users/Alex/Desktop/allugare/lib/python3.5/site-packages/django/core/management/__init__.py", line 367, in execute_from_command_line 
    utility.execute() 
    File "/Users/Alex/Desktop/allugare/lib/python3.5/site-packages/django/core/management/__init__.py", line 359, in execute 
    self.fetch_command(subcommand).run_from_argv(self.argv) 
    File "/Users/Alex/Desktop/allugare/lib/python3.5/site-packages/django/core/management/base.py", line 294, in run_from_argv 
    self.execute(*args, **cmd_options) 
    File "/Users/Alex/Desktop/allugare/lib/python3.5/site-packages/django/core/management/base.py", line 345, in execute 
    output = self.handle(*args, **options) 
    File "/Users/Alex/Desktop/allugare/lib/python3.5/site-packages/django/contrib/staticfiles/management/commands/collectstatic.py", line 193, in handle 
    collected = self.collect() 
    File "/Users/Alex/Desktop/allugare/lib/python3.5/site-packages/django/contrib/staticfiles/management/commands/collectstatic.py", line 124, in collect 
    handler(path, prefixed_path, storage) 
    File "/Users/Alex/Desktop/allugare/lib/python3.5/site-packages/django/contrib/staticfiles/management/commands/collectstatic.py", line 349, in copy_file 
    if not self.delete_file(path, prefixed_path, source_storage): 
    File "/Users/Alex/Desktop/allugare/lib/python3.5/site-packages/django/contrib/staticfiles/management/commands/collectstatic.py", line 255, in delete_file 
    if self.storage.exists(prefixed_path): 
    File "/Users/Alex/Desktop/allugare/lib/python3.5/site-packages/storages/backends/s3boto.py", line 439, in exists 
    if self.entries: 
    File "/Users/Alex/Desktop/allugare/lib/python3.5/site-packages/storages/backends/s3boto.py", line 302, in entries 
    for entry in self.bucket.list(prefix=self.location)) 
    File "/Users/Alex/Desktop/allugare/lib/python3.5/site-packages/storages/backends/s3boto.py", line 301, in <genexpr> 
    self._entries = dict((self._decode_name(entry.key), entry) 
    File "/Users/Alex/Desktop/allugare/lib/python3.5/site-packages/boto/s3/bucketlistresultset.py", line 34, in bucket_lister 
    encoding_type=encoding_type) 
    File "/Users/Alex/Desktop/allugare/lib/python3.5/site-packages/boto/s3/bucket.py", line 473, in get_all_keys 
    '', headers, **params) 
    File "/Users/Alex/Desktop/allugare/lib/python3.5/site-packages/boto/s3/bucket.py", line 399, in _get_all 
    query_args=query_args) 
    File "/Users/Alex/Desktop/allugare/lib/python3.5/site-packages/boto/s3/connection.py", line 668, in make_request 
    retry_handler=retry_handler 
    File "/Users/Alex/Desktop/allugare/lib/python3.5/site-packages/boto/connection.py", line 1071, in make_request 
    retry_handler=retry_handler) 
    File "/Users/Alex/Desktop/allugare/lib/python3.5/site-packages/boto/connection.py", line 927, in _mexe 
    request.authorize(connection=self) 
    File "/Users/Alex/Desktop/allugare/lib/python3.5/site-packages/boto/connection.py", line 377, in authorize 
    connection._auth_handler.add_auth(self, **kwargs) 
    File "/Users/Alex/Desktop/allugare/lib/python3.5/site-packages/boto/auth.py", line 755, in add_auth 
    **kwargs) 
    File "/Users/Alex/Desktop/allugare/lib/python3.5/site-packages/boto/auth.py", line 574, in add_auth 
    string_to_sign = self.string_to_sign(req, canonical_request) 
    File "/Users/Alex/Desktop/allugare/lib/python3.5/site-packages/boto/auth.py", line 514, in string_to_sign 
    sts.append(self.credential_scope(http_request)) 
    File "/Users/Alex/Desktop/allugare/lib/python3.5/site-packages/boto/auth.py", line 496, in credential_scope 
    region_name = self.determine_region_name(http_request.host) 
    File "/Users/Alex/Desktop/allugare/lib/python3.5/site-packages/boto/auth.py", line 690, in determine_region_name 
    return region_name 
UnboundLocalError: local variable 'region_name' referenced before assignment 

settings.py:

... 
    INSTALLED_APPS = (
     #DJANGO APPS 
     'django.contrib.admin', 
     'django.contrib.auth', 
     'django.contrib.contenttypes', 
     'django.contrib.sessions', 
     'django.contrib.sites', 
     'django.contrib.messages', 
     'django.contrib.staticfiles', 

     #THIRD PARTY APPS 
     'allauth', 
     'allauth.account', 
     'allauth.socialaccount', 

     #Social Authentications 
     'allauth.socialaccount.providers.facebook', 
     # 'allauth.socialaccount.providers.instagram', 
     # 'allauth.socialaccount.providers.twitter', 

     'crispy_forms', 
     'django_messages', 
     'storages', 

     #MY APPS 
     'lares', 
     'mensagens', 
     'profiles', 
    ) 

    ... 
    STATIC_URL = '/static/' 
    STATIC_ROOT = os.path.join(BASE_DIR, "static-live", "static") 


    MEDIA_URL = '/media/' 
    MEDIA_ROOT = os.path.join(BASE_DIR, "static-live", "media") 

    STATICFILES_DIRS = (
     os.path.join(BASE_DIR, "static"), 
     ) 

    AWS_ACCESS_KEY_ID = "***" 
    AWS_SECRET_ACCESS_KEY = "***" 


    AWS_FILE_EXPIRE = 200 
    AWS_PRELOAD_METADATA = True 
    AWS_QUERYSTRING_AUTH = True 

    DEFAULT_FILE_STORAGE = 'allugare.utils.MediaRootS3BotoStorage' 
    STATICFILES_STORAGE = 'allugare.utils.StaticRootS3BotoStorage' 
    # DEFAULT_FILE_STORAGE = 'storages.backends.s3boto3.S3Boto3Storage' 
    # STATICFILES_STORAGE = 'storages.backends.s3boto3.S3Boto3Storage' 
    AWS_STORAGE_BUCKET_NAME = 's3allugare' 
    S3DIRECT_REGION = 'sa-east-1' 
    S3_URL = '//%s.s3.amazonaws.com/' % AWS_STORAGE_BUCKET_NAME 
    MEDIA_URL = '//%s.s3.amazonaws.com/media/' % AWS_STORAGE_BUCKET_NAME 
    MEDIA_ROOT = MEDIA_URL 
    STATIC_URL = S3_URL + 'static/' 
    ADMIN_MEDIA_PREFIX = STATIC_URL + 'admin/' 
    AWS_S3_HOST = 'sa-east-1.amazonaws.com' 

    import datetime 

    two_months = datetime.timedelta(days=61) 
    date_two_months_later = datetime.date.today() + two_months 
    expires = date_two_months_later.strftime("%A, %d %B %Y 20:00:00 GMT") 

    AWS_HEADERS = { 
     'Expires': expires, 
     'Cache-Control': 'max-age=%d' % (int(two_months.total_seconds()),), 
    } 

wsgi.py

""" 
WSGI config for allugare project. 

It exposes the WSGI callable as a module-level variable named ``application``. 

For more information on this file, see 
https://docs.djangoproject.com/en/1.10/howto/deployment/wsgi/ 
""" 

import os 
from django.core.wsgi import get_wsgi_application 

os.environ.setdefault("DJANGO_SETTINGS_MODULE", "allugare.settings") 

application = get_wsgi_application() 

utils.py

from storages.backends.s3boto import S3BotoStorage 

StaticRootS3BotoStorage = lambda: S3BotoStorage(location='static') # S3 bucket name -> static 
MediaRootS3BotoStorage = lambda: S3BotoStorage(location='media') # S3 bucket name -> static 

Answer 1

Okay, hier ist die Sache, wenn Sie nicht die Standardregion von AWS verwenden, müssen Sie beim Aktualisieren Ihrer Region vorsichtig sein, da die S3s je nach Region unterschiedliche Formate haben.

Ich bin in Südamerika, also benutze ich sa-east-1 (für São Paulo).

Für mich war es, wenn ich die Einstellung geändert: AWS_S3_HOST = 'sa-east-1.amazonaws.com' zu AWS_S3_HOST = 's3-sa-east-1.amazonaws.com'

Genießen!