Support Decimal type in JSON serializer

[jimbobhickville]

SQLa Numeric types get returned as decimal.Decimal objects. simplejson has support for this, whereas the builtin json module does not and there's no clean way to subclass it in a way that it won't convert the value to a JSON string.

Fixes #23

[jimbobhickville]

@ColtonProvias - any chance you'll have time to review these PRs soon?

[Anderycks]

@jimbobhickville I'm lending a hand now and helping Colton get PRs reviewed. I'll be taking a look off and on through this week. More feedback coming soon.

[Anderycks]

What happens in the builtin json module with Decimal types? Does it just throw an exception?

[ColtonProvias]

It does throw an exception if I recall. Just have to extend the JSONEncoder class appropriately to fix.

On Fri, Feb 24, 2017 at 12:55 PM Deryck Hodge notifications@github.com wrote:

What happens in the builtin json module with Decimal types? Does it just throw an exception?

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[jimbobhickville]

Yep, it throws an exception. I first attempted to override the builtin, but you'd have to monkey-patch a pretty critical method to override the behavior iirc. Always possible I missed an easier solution.

[Anderycks]

OK, makes sense. I'd prefer to fix this the way Colton suggests -- patching our JSONAPIEncoder class, rather than taking on a new dependency on simplejson. I understand if that's more work than you'd like to take on, though @jimbobhickville.

[jimbobhickville]

If I get back to the project that was using this, I'll work on a new patch.

[Anderycks]

@jimbobhickville Sounds good. Thanks!