Hi Michael,
why there's such condition testing value for None in JSONEncodeDict?
def process_bind_param(self, value, dialect):
*if value is not None:*
value = json.dumps(value)
return value
*json.dumps(None)* returns *'null'* which is absolutely valid JSON string.
P
Dne pondělí 3. srpna 2015 15:26:07 UTC+2 Michael Bayer napsal(a):
>
>
> On 8/3/15 3:13 AM, [email protected] <javascript:> wrote:
> > On 2015-08-02 19:15 <[email protected] <javascript:>> wrote:
> >> But what is about SQLAlchemy? I see nowhere a implementation of a
> >> List() type that encapsulate that VARCHAR-depending converting work?
> > When implementing this myself. I am not sure if I have to use
> > TypeDecorator
> > or
> > UserDefinedType
> > as baseclass for that.
> >
> > I am not sure how this would look like.
> >
> > I need a list (undefined length) with tree values for each entry.
> >
> > x = [(1,2,3), (1,2,3), (1,2,3)]
> >
>
> The JSON type would give you a quick way to handle the list format:
>
>
> http://docs.sqlalchemy.org/en/rel_1_0/core/custom_types.html#marshal-json-strings
>
>
> if you have some other string format, substitute dumps() / loads().
>
>
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