Applies model generics on relational fields functions

[ropmyung]

Description

Applied generic syntax on relational fields functions for type hinting

ForeignKeyField
OneToOneField

[codspeed-hq]

Merging this PR will not alter performance

✅ 24 untouched benchmarks

---

_{Comparing ropmyung:develop (0b53759) with develop (e272ab0)}

[waketzheng]

Why do that? What's the benefit?

[ropmyung]

Why do that? What's the benefit?

Of course for type hint. Otherwise, It shows like Model, not the specific model class

[waketzheng]

Could you show a demo of how 'Model' raises a type issue, while 'MODEL' does not?

[ropmyung]

Could you show a demo of how 'Model' raises a type issue, while 'MODEL' does not?

class Test1(Model):
    id = fields.BigIntField(pk=True)


class Test2(Model):
    id = fields.BigIntField(pk=True)
    test1 = fields.ForeignKeyField(Test1)

[waketzheng]

OK, get it. Seems that the ManyToManyField function in line 587 should be changed as well.

[waketzheng]

The following lines should be changed also:
361
384
424
438
450
460
525