当我第一次尝试运行升级时遇到此错误。尽管我已经给了它一个 name 属性，但它似乎在性别类型枚举上失败了。
有解决办法吗？有什么方法可以查看生成的 SQL 内容吗？
这是我的 models.py，这是我运行flask.ext.migrate.upgrade 时遇到的错误。
class User(UserMixin, db.Model):
__tablename__ = 'users'
id = db.Column(db.Integer, primary_key=True)
first = db.Column(db.String(64))
last = db.Column(db.String(64))
dob = db.Column(db.Date)
street_addr1 = db.Column(db.String(64))
street_addr2 = db.Column(db.String(64))
city = db.Column(db.String(64))
state = db.Column(db.String(2))
zip = db.Column(db.String(9))
gender = db.Column(db.Enum('M', 'F', name='gender_types'))
home_box = db.Column(db.String(32))
username = db.Column(db.String(64), unique=True, index=True)
password_hash = db.Column(db.String(128))
@property
def password(self):
raise AttributeError('password is not a readable attribute')
@password.setter
def password(self, password):
self.password_hash = generate_password_hash(password)
def verify_password(self, password):
return check_password_hash(self.password_hash, password)
def __repr__(self):
return '<User %r>' % self.username
@login_manager.user_loader
def load_user(user_id):
return User.query.get(int(user_id))
class Competition(db.Model):
__tablename__ = 'competitions'
id = db.Column(db.Integer, primary_key=True)
name = db.Column(db.String(12))
终端输出：
(venv)Nates-MacBook-Pro-2:competitions nate$ heroku run python manage.py deploy
Running `python manage.py deploy` attached to terminal... up, run.8483
INFO [alembic.migration] Context impl PostgresqlImpl.
INFO [alembic.migration] Will assume transactional DDL.
INFO [alembic.migration] Running upgrade None -> 3c7e6046cf6, initial migration
Traceback (most recent call last):
File "manage.py", line 36, in <module>
manager.run()
File "/app/.heroku/python/lib/python2.7/site-packages/flask_script/__init__.py", line 405, in run
result = self.handle(sys.argv[0], sys.argv[1:])
File "/app/.heroku/python/lib/python2.7/site-packages/flask_script/__init__.py", line 384, in handle
return handle(app, *positional_args, **kwargs)
File "/app/.heroku/python/lib/python2.7/site-packages/flask_script/commands.py", line 145, in handle
return self.run(*args, **kwargs)
File "manage.py", line 25, in deploy
upgrade()
File "/app/.heroku/python/lib/python2.7/site-packages/flask_migrate/__init__.py", line 98, in upgrade
command.upgrade(config, revision, sql = sql, tag = tag)
File "/app/.heroku/python/lib/python2.7/site-packages/alembic/command.py", line 124, in upgrade
script.run_env()
File "/app/.heroku/python/lib/python2.7/site-packages/alembic/script.py", line 199, in run_env
util.load_python_file(self.dir, 'env.py')
File "/app/.heroku/python/lib/python2.7/site-packages/alembic/util.py", line 199, in load_python_file
module = load_module(module_id, path)
File "/app/.heroku/python/lib/python2.7/site-packages/alembic/compat.py", line 55, in load_module
mod = imp.load_source(module_id, path, fp)
File "migrations/env.py", line 72, in <module>
run_migrations_online()
File "migrations/env.py", line 65, in run_migrations_online
context.run_migrations()
File "<string>", line 7, in run_migrations
File "/app/.heroku/python/lib/python2.7/site-packages/alembic/environment.py", line 652, in run_migrations
self.get_context().run_migrations(**kw)
File "/app/.heroku/python/lib/python2.7/site-packages/alembic/migration.py", line 225, in run_migrations
change(**kw)
File "migrations/versions/3c7e6046cf6_initial_migration.py", line 33, in upgrade
sa.PrimaryKeyConstraint('id')
File "<string>", line 7, in create_table
File "/app/.heroku/python/lib/python2.7/site-packages/alembic/operations.py", line 647, in create_table
self._table(name, *columns, **kw)
File "/app/.heroku/python/lib/python2.7/site-packages/alembic/ddl/impl.py", line 148, in create_table
_ddl_runner=self)
File "/app/.heroku/python/lib/python2.7/site-packages/sqlalchemy/event.py", line 409, in __call__
fn(*args, **kw)
File "/app/.heroku/python/lib/python2.7/site-packages/sqlalchemy/util/langhelpers.py", line 404, in __call__
return getattr(self.target, self.name)(*arg, **kw)
File "/app/.heroku/python/lib/python2.7/site-packages/sqlalchemy/types.py", line 1933, in _on_table_create
t._on_table_create(target, bind, **kw)
File "/app/.heroku/python/lib/python2.7/site-packages/sqlalchemy/dialects/postgresql/base.py", line 870, in _on_table_create
self.create(bind=bind, checkfirst=checkfirst)
File "/app/.heroku/python/lib/python2.7/site-packages/sqlalchemy/dialects/postgresql/base.py", line 821, in create
bind.execute(CreateEnumType(self))
File "/app/.heroku/python/lib/python2.7/site-packages/sqlalchemy/engine/base.py", line 662, in execute
params)
File "/app/.heroku/python/lib/python2.7/site-packages/sqlalchemy/engine/base.py", line 714, in _execute_ddl
compiled = ddl.compile(dialect=dialect)
File "/app/.heroku/python/lib/python2.7/site-packages/sqlalchemy/sql/expression.py", line 1920, in compile
return self._compiler(dialect, bind=bind, **kw)
File "/app/.heroku/python/lib/python2.7/site-packages/sqlalchemy/schema.py", line 2954, in _compiler
return dialect.ddl_compiler(dialect, self, **kw)
File "/app/.heroku/python/lib/python2.7/site-packages/sqlalchemy/engine/interfaces.py", line 804, in __init__
self.string = self.process(self.statement, **compile_kwargs)
File "/app/.heroku/python/lib/python2.7/site-packages/sqlalchemy/engine/interfaces.py", line 823, in process
return obj._compiler_dispatch(self, **kwargs)
File "/app/.heroku/python/lib/python2.7/site-packages/sqlalchemy/sql/visitors.py", line 80, in _compiler_dispatch
return meth(self, **kw)
File "/app/.heroku/python/lib/python2.7/site-packages/sqlalchemy/dialects/postgresql/base.py", line 1072, in visit_create_enum_type
self.preparer.format_type(type_),
File "/app/.heroku/python/lib/python2.7/site-packages/sqlalchemy/dialects/postgresql/base.py", line 1254, in format_type
raise exc.CompileError("Postgresql ENUM type requires a name.")
sqlalchemy.exc.CompileError: Postgresql ENUM type requires a name.
