OK, new day, new perspectives. This is the best way to do the mapping /
type:
class CastToIntegerType(TypeDecorator):
impl = String
def column_expression(self, col):
return cast(col, Integer)
def process_bind_param(self, value, dialect):
return str(value)
class
This is a perfectly usable solution. Thanks so much!
On Wednesday, September 16, 2015 at 11:39:57 AM UTC-7, Michael Bayer wrote:
>
> OK, new day, new perspectives. This is the best way to do the mapping /
> type:
>
> class CastToIntegerType(TypeDecorator):
> impl = String
>
> def
Ok thanks! Adding a bind_expression to my CastToInteger type ensures that
when Person.id is included in a WHERE clause, the param is cast to varchar.
This is ok, except now I have the following situation:
class CastToIntegerType(types.TypeDecorator):
impl = types.Numeric
def
Hi,
I'm having trouble implementing a model whose 'id' column needs to be cast
to Integer type. Below is the implementation I've got so far:
class CastToIntegerType(types.TypeDecorator):
'''
Converts stored String values to Integer via CAST operation
'''
impl = types.Numeric
On 9/15/15 1:19 PM, Katie Wurman wrote:
Hi,
I'm having trouble implementing a model whose 'id' column needs to be
cast to Integer type. Below is the implementation I've got so far:
class CastToIntegerType(types.TypeDecorator):
'''
Converts stored String values to Integer via CAST
On 9/15/15 4:10 PM, Mike Bayer wrote:
On 9/15/15 2:47 PM, Katie Wurman wrote:
class Person(Base):
__tablename__ = 'person'
id = Column('id_string', CastToIntegerType, primary_key=True)
pets = relationship('Pets',
primaryjoin='foreign(Pets.person_id)==Person.id')
class
On 9/15/15 2:47 PM, Katie Wurman wrote:
Ok thanks! Adding a bind_expression to my CastToInteger type ensures
that when Person.id is included in a WHERE clause, the param is cast
to varchar.
This is ok, except now I have the following situation:
class CastToIntegerType(types.TypeDecorator):
