3
我有一個「主應用程序」,並在此應用程序,我已經中初始化 .py文件如下:SQLAlchemy的問題時,擴展應用金字塔
def main(global_config, **settings):
# various config settings
config.include(site_configs)
def site_configs(config):
config.add_route('portfolio', '/portfolio',
view='mainapp.views.portfolio',
view_renderer='/site/portfolio.mako')
而在views.py我有:
def portfolio(request):
## some code here
project_records = dbsession.query(projects).from_statement(
'SELECT * FROM projects ORDER by id DESC').all()
return {'project_records': project_records}
然後我有一個新的應用程序,我想擴展。
所以在初始化的.py我做:
from mainapp import site_configs
def main(global_config, **settings):
# various config settings
config.include(site_configs)
但是當我運行這個新的應用程序,我得到以下錯誤(在此消息的底部完全回溯):
UnboundExecutionError: Could not locate a bind configured on mapper
Mapper|projects|projects, SQL expression or this Session
sqlalchemy引擎已在兩個應用程序中正確設置。
另外我想要做的是在新的應用程序中使用數據庫,而不是原始主應用程序中的數據庫。
----------------------------
Full Traceback
----------------------------
URL: http://127.0.0.1:6543/portfolio
Module weberror.evalexception:431 in respond view
>> app_iter = self.application(environ, detect_start_response)
Module repoze.tm:23 in __call__ view
>> result = self.application(environ, save_status_and_headers)
Module pyramid.router:158 in __call__ view
>> response = view_callable(context, request)
Module pyramid.config:2824 in _rendered_view view
>> response = wrapped_view(context, request)
Module pyramid.config:2916 in _requestonly_view view
>> response = view(request)
Module mainapp.views:62 in portfolio view
>> project_records = dbsession.query(projects).from_statement('SELECT * FROM projects ORDER by id DESC').all()
Module sqlalchemy.orm.query:1579 in all view
>> return list(self)
Module sqlalchemy.orm.query:1689 in __iter__ view
>> return self._execute_and_instances(context)
Module sqlalchemy.orm.query:1694 in _execute_and_instances view
>> mapper=self._mapper_zero_or_none())
Module sqlalchemy.orm.session:717 in execute view
>> engine = self.get_bind(mapper, clause=clause, **kw)
Module sqlalchemy.orm.session:853 in get_bind view
>> ', '.join(context)))
我已通過在新應用程序__init__.py文件中更改此問題來解決該問題:從mainapp.models導入initialize_sql因此我使用主應用程序sqla配置。但有沒有 這樣做,特別是如果我將有 負載使用它的應用程序。謝謝。 – sidewinder