Can't get json attribute from Set

[xunto]

I have a model like this:

class Pool(db.Entity):
    pool_name = Required(str, unique=True)

    builds = Set(lambda: Build)

class Build(db.Entity):
    data = Required(Json)

    pools = Set(lambda: Pool)

but when I do something like:

pool.builds.data

I get:

    def distinct(iter):
        d = defaultdict(int)
        for item in iter:
>           d[item] = d[item] + 1
E           TypeError: unhashable type: 'TrackedDict'

Tested on master branch(orm)

[kozlovsky]

Hi Valentine, what result are you expecting to get?

[xunto]

@kozlovsky Hi! I expect to get set or list of json's. It works that way with most of types.

[kozlovsky]

We cannot return a set of json's, because json value is subclass of dict and cannot be item of set. Probably for such attributes we can indeed return a list of dicts. I think the result elements should be not a TrackedDict instances, but just plain dicts, and their subsequent modifications should not be reflected in models.

[xunto]

@kozlovsky yeah, sounds good. I forgot that you can't store dicts in set (even though I felt that something is wrong about it).