for some reason I cannot get my session to commit within a class
Here is the error.
Traceback (most recent call last):
File "/usr/local/lib/python2.6/dist-packages/cherrypy/
_cprequest.py", line 606, in respond
cherrypy.response.body = self.handler()
File "/usr/local/lib/python2.6/dist-packages/cherrypy/
_cpdispatch.py", line 25, in __call__
return self.callable(*self.args, **self.kwargs)
File "WebTest.py", line 106, in index
session.flush()
File "/usr/local/lib/python2.6/dist-packages/sqlalchemy/orm/
scoping.py", line 123, in do
return getattr(self.registry(), name)(*args, **kwargs)
File "/usr/local/lib/python2.6/dist-packages/sqlalchemy/orm/
session.py", line 1354, in flush
self._flush(objects)
File "/usr/local/lib/python2.6/dist-packages/sqlalchemy/orm/
session.py", line 1432, in _flush
flush_context.execute()
File "/usr/local/lib/python2.6/dist-packages/sqlalchemy/orm/
unitofwork.py", line 257, in execute
UOWExecutor().execute(self, tasks)
File "/usr/local/lib/python2.6/dist-packages/sqlalchemy/orm/
unitofwork.py", line 720, in execute
self.execute_save_steps(trans, task)
File "/usr/local/lib/python2.6/dist-packages/sqlalchemy/orm/
unitofwork.py", line 735, in execute_save_steps
self.save_objects(trans, task)
File "/usr/local/lib/python2.6/dist-packages/sqlalchemy/orm/
unitofwork.py", line 726, in save_objects
task.mapper._save_obj(task.polymorphic_tosave_objects, trans)
File "/usr/local/lib/python2.6/dist-packages/sqlalchemy/orm/
mapper.py", line 1387, in _save_obj
c = connection.execute(statement.values(value_params), params)
File "/usr/local/lib/python2.6/dist-packages/sqlalchemy/engine/
base.py", line 824, in execute
return Connection.executors[c](self, object, multiparams, params)
File "/usr/local/lib/python2.6/dist-packages/sqlalchemy/engine/
base.py", line 874, in _execute_clauseelement
return self.__execute_context(context)
File "/usr/local/lib/python2.6/dist-packages/sqlalchemy/engine/
base.py", line 896, in __execute_context
self._cursor_execute(context.cursor, context.statement,
context.parameters[0], context=context)
File "/usr/local/lib/python2.6/dist-packages/sqlalchemy/engine/
base.py", line 950, in _cursor_execute
self._handle_dbapi_exception(e, statement, parameters, cursor,
context)
File "/usr/local/lib/python2.6/dist-packages/sqlalchemy/engine/
base.py", line 931, in _handle_dbapi_exception
raise exc.DBAPIError.instance(statement, parameters, e,
connection_invalidated=is_disconnect)
OperationalError: (OperationalError) no such table: __main___test
u'INSERT INTO __main___test (name) VALUES (?)' ['network']
And here is the code
#!/usr/bin/env python
########################################################################
#
#
# MODEL
#
#
#
########################################################################
from elixir import *
global session, metadata
metadata.bind = 'sqlite:///:memory:'
metadata.echo = True
class Test(Entity):
""" ORM for Tests. """
id = Field(Integer, primary_key = True)
name = Field(Unicode(50), required = True)
questions = OneToMany('Question')
def __init__(self,name):
""" Accepts a name for a test """
#TODO: Ensure valid input
self.name = name
class Question(Entity):
""" ORM for Questions. """
id = Field(Integer, primary_key = True)
question = Field(UnicodeText, required = True)
test = ManyToOne('Test')
answers = OneToMany('Answer')
def __init__(self,test_id, question):
""" Accepts a test_id and a question to sign that test """
#TODO: Ensure valid input
self.question = question
class Answer(Entity):
""" ORM for Answers. """
id = Field(Integer, primary_key = True)
answer = Field(UnicodeText, required = True)
correct = Field(Unicode(1), required = True) # y for correct n for
not
question = ManyToOne('Question')
def __init__(self,question_id,answer,correct=0):
""" Accepts a question_id and a answer to assign to that
question.
Optionally it accepts correct, y for correct, n for not
Default for correct is n"""
#TODO: Ensure vaild input
self.answer = answer
self.correct = correct
setup_all()
create_all()
########################################################################
#
#
# VIEW/CONTROLLER
#
# Will Seperate Later
#
#
#
########################################################################
import cherrypy
class WebTest(object):
""" Cherrypy server root """
def header(self):
""" Defines a header to be used for web pages... Should be
temporary """
return '<html><head><title>pyWebTest</title></head><body>'
def footer(self):
""" Defines a footer to be used for web pages... Should also
be temporary """
return '</body></html>'
@cherrypy.expose()
def index(self):
""" Root page for pyWebTest server """
output = 'BEGIN<br />'
test = Test('network')
output = output + 'The test ' + test.name + ' has been
initialized!<br />'
test1 = Test('A+')
output = output + str(session.new)+ '<br />'
output = output + str(session.dirty) + '<br />'
session.flush()
session.commit()
if test.id >=0:
output = output + 'Test has been added<br />'
output = output + str(test1.id) + '<br />'
#session.query(Test).all()
#session.query(Test).filter(Test.name.in_(['network
+','fake'])).all()
output = output + 'DONE <br />'
return self.header() + output + self.footer()
def main():
cherrypy.quickstart(WebTest())
return 0
if __name__ == '__main__': main()
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