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Give every db table a __str__.

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This commit is contained in:
Eevee 2011-03-14 20:51:31 -07:00
parent b61acaff69
commit a0f5c53193
1 changed files with 21 additions and 12 deletions
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33
pokedex/db/tables.py
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@ -56,25 +56,34 @@ class TableMetaclass(DeclarativeMeta):
if hasattr(cls, '__tablename__'): if hasattr(cls, '__tablename__'):
table_classes.append(cls) table_classes.append(cls)
metadata = MetaData() class TableSuperclass(object):
TableBase = declarative_base(metadata=metadata, metaclass=TableMetaclass) """Superclass for declarative tables, to give them some generic niceties
like stringification.
### Helper classes """
# XXX this stuff isn't covered anywhere; maybe put it in TableBase??
class Named(object):
"""Mixin for objects that have names"""
def __unicode__(self): def __unicode__(self):
"""Be as useful as possible. Show the primary key, and an identifier
if we've got one.
"""
typename = u'.'.join((__name__, type(self).__name__))
pk_constraint = self.__table__.primary_key
if not pk_constraint:
return u"<%s object at %x>" % (typename, id(self))
pk = u', '.join(unicode(getattr(self, column.name))
for column in pk_constraint.columns)
try: try:
return '<%s: %s>' % (type(self).__name__, self.identifier) return u"<%s object (%s): %s>" % (typename, pk, self.identifier)
except AttributeError: except AttributeError:
return '<%s>' % type(self).__name__ return u"<%s object (%s)>" % (typename, pk)
def __str__(self): def __str__(self):
return unicode(self).encode('utf-8') return unicode(self).encode('utf8')
def __repr__(self): metadata = MetaData()
return str(self) TableBase = declarative_base(metadata=metadata, cls=TableSuperclass, metaclass=TableMetaclass)
### Helper classes
class LanguageSpecific(object): class LanguageSpecific(object):
"""Mixin for prose and text tables""" """Mixin for prose and text tables"""
@declared_attr @declared_attr