[WIP] Support null values for optional fields

[wiseaidev]

Related to #261 & #254

The query is working, the only issue is that the await model.save() call returns the values stored in Redis, i also need to apply this workaround to this method that i am currently trying to find out how.

The string zero "0" is the null value rather than the empty string cause it is a valid int and float, not sure if someone want to store "0" in the database as a string value, highly unlikely.

Test case example:

actual = await (m.Member.find(m.Member.bio % "great").all()) # Notice the None values.

[Member(pk='01GA23KQ9SSGK1TNVZD202C9RM', id=0, first_name='Andrew', last_name='Brookins', email='[email protected]', join_date=datetime.date(2022, 8, 9), height=None, weight=None, age=38, bio='This is member 1 whose greatness makes him the life and soul of any party he goes to.')]

       
member1 = m.Member(
  id=0,
  first_name="Andrew, the Michael",
  last_name="St. Brookins-on-Pier",
  email="a|[email protected]",  # NOTE: This string uses the TAG field separator.
  age=38,
  join_date=today,
  bio="This is a test user on our system.",
)
await member1.save()

# returns zeros rather than Nones
[Member(pk='01GA23KQ9SSGK1TNVZD202C9RM', id=0, first_name='Andrew', last_name='Brookins', email='[email protected]', join_date=datetime.date(2022, 8, 9), height=0, weight=0.0, age=38, bio='This is member 1 whose greatness makes him the life and soul of any party he goes to.')]

I think the only solution is to override self or construct a new object with these values(None in place of "0").

[dvora-h]

@wiseaidev It doesn't seem to have solved the problem, the tests are failing.

[wiseaidev]

Hey @dvora-h, sorry, i was AFK. Working on it, not finished yet! Marking it as a work in progress!

[sav-norem]

Wanted to add a comment - seems like you're aware based on the tests only being for the HashModel, but to call it out, issues #254 and #261 work if you swap the HashModel for a JsonModel - not a fix, but something to note and call out.