我的 google foo 在这方面做得不够，所以我把它扔给这里的天才。
我正在编写一些啤酒配方创建软件，并且我在 SQLObject 中有一个类，我希望将一个 RelatedJoin 返回到自身。但它不起作用。
如果重要的话，我正在使用 SQLite3。
这是表格：
class Hop(SQLObject):
BITTERING = 0
AROMA = 1
BOTH = 2
LEAF = 0
PELLET = 1
PLUG = 2
hop_types = ['Bittering', 'Aroma', 'Both',]
hop_forms = ['Leaf', 'Pellet', 'Plug',]
hop_type = IntCol(default=BITTERING)
hop_form = IntCol(default=LEAF)
alpha = PercentCol(default=0.0)
beta = PercentCol(default=0.0)
stability = PercentCol(default=0.0)
origin = UnicodeCol(default=None)
name = UnicodeCol(length=64, default=None)
description = UnicodeCol(default=None)
substitutes = RelatedJoin('Hop')
这是错误：
>>> hop = Hop(name='Cascade', hop_form=LEAF, alpha=5.5, beta=4.8, stability=98.0, origin='USA', description='Tasty!')
>>> hop.id
2
>>> substitute_hop = Hop.get(1)
>>> hop.addHop(subtitute_hop)
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "<string>", line 1, in <lambda>
File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/SQLObject-0.13.0-py2.7.egg/sqlobject/joins.py", line 230, in add
getID(other))
File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/SQLObject-0.13.0-py2.7.egg/sqlobject/dbconnection.py", line 574, in _SO_intermediateInsert
self.sqlrepr(secondValue)))
File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/SQLObject-0.13.0-py2.7.egg/sqlobject/dbconnection.py", line 349, in query
return self._runWithConnection(self._query, s)
File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/SQLObject-0.13.0-py2.7.egg/sqlobject/dbconnection.py", line 262, in _runWithConnection
val = meth(conn, *args)
File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/SQLObject-0.13.0-py2.7.egg/sqlobject/dbconnection.py", line 346, in _query
self._executeRetry(conn, conn.cursor(), s)
File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/SQLObject-0.13.0-py2.7.egg/sqlobject/sqlite/sqliteconnection.py", line 187, in _executeRetry
raise OperationalError(ErrorMessage(e))
sqlobject.dberrors.OperationalError: no such table: hop_hop
这是生成数据库的函数
def connect_db(config):
init = False
if not os.path.exists(config['DB_NAME']):
init = True
connection = connectionForURI("%s%s%s" % (config['DB_DRIVER'],
config['DB_PROTOCOL'],
config['DB_NAME']))
sqlhub.processConnection = connection
if init:
init_db(config)
def init_db(config):
tables = [Entry, Users, Tag, Image, Hop, Grain, Extract, HoppedExtract,
Yeast, Water, Misc, Mineral, Fining, Flavor, Spice, Herb,
BJCPStyle, BJCPCategory, MashTun, BoilKettle, EquipmentSet,
MashProfile, MashStep, MashStepOrder, Recipe, RecipeIngredient,
Inventory]
for table in tables:
try:
table.createTable()
except OperationalError:
pass
admin = Users(email=config['ADMIN_USERNAME'])
admin.set_pass(config['PASSWORD_SALT'], config['ADMIN_PASSWORD'])
admin.admin = True