[编辑]
尝试在Windows中重现this。该怎么做?
即使我将dll文件放在%PATH%中定义的目录中,也可以尝试使用/不使用完整路径,使用/不使用文件扩展名,使用'//'或'\',使用libspatialite-4.dll或用前面提到的所有组合来执行... dbapi_conn.execute(“ SELECT load_extension('mod_spatialite.dll')”)
例如,我尝试了这种组合:
def load_spatialite(dbapi_conn, connection_record):
dbapi_conn.load_extension('C:\\Scripts\\mod_spatialite.dll')
# dbapi_conn.load_extension('C:\\Scripts\\libspatialite-4.dll')
# dbapi_conn.load_extension('mod_spatialite')
# dbapi_conn.load_extension('mod_spatialite.dll')
# dbapi_conn.execute("SELECT load_extension('C:\\pyramid\\risc\\api\\Scripts\\mod_spatialite.dll')")
# dbapi_conn.execute("SELECT load_extension('mod_spatialite.dll')")
# dbapi_conn.execute("SELECT load_extension('mod_spatialite')")
# dbapi_conn.load_extension('C:/Scripts\mod_spatialite.dll')
一个简单的问题,但对我来说却是一个难题:如何在金字塔框架中使用spacespaceite?
首先,有我的环境:
Windows 10:
Python版本:3.6.8
本地数据库:sqlite(用于spacespaceite)
远程数据库:postgresql
我发现很多示例,它们使用create_engine
,libsqlite3
,mod_spatialite
之类的lib在pysqlite3
中的spatialite
的{{3}}的模块参数中设置了spacespaceite就我而言,我使用setup.py
和pip一起安装(软件包在create_engine
中定义)
我的问题是,我没有控制pyramid.reload_templates = true
pyramid.reload_assets = true
pyramid.debug_authorization = true
pyramid.debug_notfound = false
pyramid.debug_routematch = true
pyramid.default_locale_name = en
pyramid.includes =
pyramid_debugtoolbar
pyramid_tm
sqlalchemy.url = sqlite:///%(here)s/risc.sqlite
,该引擎来自ini的设置,因此我认为我必须通过ini文件传递该设置,但是我没有得到它。我找不到使用与我相同的组合环境(Windows,金字塔,spacerite)的任何代码示例。
有ini文件的设置:
from sqlalchemy import engine_from_config
from sqlalchemy.orm import sessionmaker
from sqlalchemy.orm import configure_mappers
import zope.sqlalchemy
# run configure_mappers after defining all of the models to ensure
# all relationships can be setup
configure_mappers()
def get_engine(settings, prefix='sqlalchemy.'):
return engine_from_config(settings, prefix)
def get_session_factory(engine):
factory = sessionmaker()
factory.configure(bind=engine)
return factory
def get_tm_session(session_factory, transaction_manager):
dbsession = session_factory()
zope.sqlalchemy.register(dbsession, transaction_manager=transaction_manager)
return dbsession
def includeme(config):
settings = config.get_settings()
settings['tm.manager_hook'] = 'pyramid_tm.explicit_manager'
# use pyramid_tm to hook the transaction lifecycle to the request
config.include('pyramid_tm')
# use pyramid_retry to retry a request when transient exceptions occur
config.include('pyramid_retry')
session_factory = get_session_factory(get_engine(settings))
config.registry['dbsession_factory'] = session_factory
# make request.dbsession available for use in Pyramid
config.add_request_method(
# r.tm is the transaction manager used by pyramid_tm
lambda r: get_tm_session(session_factory, r.tm),
'dbsession',
reify=True
)
创建引擎的代码:
setup.py
还有requires = [
'bcrypt',
'docutils',
'plaster_pastedeploy',
'pyramid',
'pyramid_debugtoolbar',
'pyramid_retry',
'pyramid_tm',
'sqlalchemy',
'transaction',
'zope.sqlalchemy',
'waitress',
'sphinx',
'flake8',
'pyLint',
'pg8000',
'geoalchemy2',
'spatialite'
]
server_name
我敢肯定我会错过一些东西,但是我找不到自己的方式。我对此没有什么暗示。
谢谢