どこにあるかさえ見つけられれば、これは簡単に修正できるエラーだと思います。これは、Flask アプリからのエラーです。
11:58:18 web.1 | ERROR:xxxxxx.core:Exception on / [GET]
11:58:18 web.1 | Traceback (most recent call last):
11:58:18 web.1 | File "/Library/Python/2.7/site-packages/flask/app.py", line 1817, in wsgi_app
11:58:18 web.1 | response = self.full_dispatch_request()
11:58:18 web.1 | File "/Library/Python/2.7/site-packages/flask/app.py", line 1477, in full_dispatch_request
11:58:18 web.1 | rv = self.handle_user_exception(e)
11:58:18 web.1 | File "/Library/Python/2.7/site-packages/flask/app.py", line 1381, in handle_user_exception
11:58:18 web.1 | reraise(exc_type, exc_value, tb)
11:58:18 web.1 | File "/Library/Python/2.7/site-packages/flask/app.py", line 1475, in full_dispatch_request
11:58:18 web.1 | rv = self.dispatch_request()
11:58:18 web.1 | File "/Library/Python/2.7/site-packages/flask/app.py", line 1461, in dispatch_request
11:58:18 web.1 | return self.view_functions[rule.endpoint](**req.view_args)
11:58:18 web.1 | File "xxxxxxx/web.py", line 202, in home
11:58:18 web.1 | d = {'featured': cached_apps.get_featured_front_page(),
11:58:18 web.1 | File "/Library/Python/2.7/site-packages/flask_cache/__init__.py", line 245, in decorated_function
11:58:18 web.1 | rv = f(*args, **kwargs)
11:58:18 web.1 | File "/Users/xxxxxxx/Desktop/PythonProjects/xxxxxx/xxxxxx2/xxxxxxx/cache/apps.py", line 35, in get_featured_front_page
11:58:18 web.1 | results = db.engine.execute(sql)
11:58:18 web.1 | File "/Library/Python/2.7/site-packages/flask_sqlalchemy/__init__.py", line 780, in engine
11:58:18 web.1 | return self.get_engine(self.get_app())
11:58:18 web.1 | File "/Library/Python/2.7/site-packages/flask_sqlalchemy/__init__.py", line 797, in get_engine
11:58:18 web.1 | return connector.get_engine()
11:58:18 web.1 | File "/Library/Python/2.7/site-packages/flask_sqlalchemy/__init__.py", line 470, in get_engine
11:58:18 web.1 | self._sa.apply_driver_hacks(self._app, info, options)
11:58:18 web.1 | File "/Library/Python/2.7/site-packages/flask_sqlalchemy/__init__.py", line 739, in apply_driver_hacks
11:58:18 web.1 | if info.drivername.startswith('mysql'):
11:58:18 web.1 | AttributeError: 'NoneType' object has no attribute 'drivername'
私がオンラインで見つけたものから、データベースに正しく接続していない可能性があることが問題のようです。アプリは Heroku では正常に動作しますが、localhost で実行すると動作しません。
which psql:
/Applications/Postgres.app/Contents/MacOS/bin/psql
which postgres:
/Applications/Postgres.app/Contents/MacOS/bin/postgres
Postgres.app は 5432 で実行されています。
他に何を確認すればよいかわかりません。
関係なく、heroku で同じ postgres DB に接続することになっている場合、なぜ heroku では機能するのに、localhost からは機能しないのでしょうか?
localhost のアプリが間違ったバージョンの Postgres を使用している可能性がありますか? それらをアンインストールしようとしました (そして Postgres.app だけを残しました) が、競合を引き起こしているものがコンピューターに残っているかどうかはわかりません。どうすればそれを確認できますか？助けていただければ幸いです。
編集:
alembic.ini ファイルからの詳細情報セグメント:
[alembic]
# path to migration scripts
script_location = alembic
# template used to generate migration files
# file_template = %%(rev)s_%%(slug)s
# under Heroku, the line below needs to be inferred from
# the environment
sqlalchemy.url = postgres://xxxxxxxxxx:xxxxxxxxxxxx@xxxxxx.compute-1.amazonaws.com:5432/xxxxxxxxx
# Logging configuration
[loggers]
keys = root,sqlalchemy,alembic
同じエラーを生成する短いスクリプトがありますpython cli.py db_create
。
#!/usr/bin/env python
import os
import sys
import optparse
import inspect
import xxxxxxx.model as model
from xxxxxx.core import db
import xxxxx.web as web
from alembic.config import Config
from alembic import command
def setup_alembic_config():
if "DATABASE_URL" not in os.environ:
alembic_cfg = Config("alembic.ini")
else:
dynamic_filename = "alembic-heroku.ini"
with file("alembic.ini.template") as f:
with file(dynamic_filename, "w") as conf:
for line in f.readlines():
if line.startswith("sqlalchemy.url"):
conf.write("sqlalchemy.url = %s\n" %
os.environ['DATABASE_URL'])
else:
conf.write(line)
alembic_cfg = Config(dynamic_filename)
command.stamp(alembic_cfg, "head")
def db_create():
'''Create the db'''
db.create_all()
# then, load the Alembic configuration and generate the
# version table, "stamping" it with the most recent rev:
setup_alembic_config()
# finally, add a minimum set of categories: Volunteer Thinking, Volunteer Sensing, Published and Draft
categories = []
categories.append(model.Category(name="Thinking",
short_name='thinking',
description='Volunteer Thinking apps'))
categories.append(model.Category(name="Volunteer Sensing",
short_name='sensing',
description='Volunteer Sensing apps'))
db.session.add_all(categories)
db.session.commit()
そして私は得る：
Traceback (most recent call last):
File "cli.py", line 111, in <module>
_main(locals())
File "cli.py", line 106, in _main
_methods[method](*args[1:])
File "cli.py", line 33, in db_create
db.create_all()
File "/Library/Python/2.7/site-packages/flask_sqlalchemy/__init__.py", line 856, in create_all
self._execute_for_all_tables(app, bind, 'create_all')
File "/Library/Python/2.7/site-packages/flask_sqlalchemy/__init__.py", line 848, in _execute_for_all_tables
op(bind=self.get_engine(app, bind), tables=tables)
File "/Library/Python/2.7/site-packages/flask_sqlalchemy/__init__.py", line 797, in get_engine
return connector.get_engine()
File "/Library/Python/2.7/site-packages/flask_sqlalchemy/__init__.py", line 470, in get_engine
self._sa.apply_driver_hacks(self._app, info, options)
File "/Library/Python/2.7/site-packages/flask_sqlalchemy/__init__.py", line 739, in apply_driver_hacks
if info.drivername.startswith('mysql'):
AttributeError: 'NoneType' object has no attribute 'drivername'