feat: autofill model argument when calling create_factory with receiving factory __model__

[g0di]

Pull Request Checklist

• New code has 100% test coverage
• (If applicable) The prose documentation has been updated to reflect the changes introduced by this PR
• (If applicable) The reference documentation has been updated to reflect the changes introduced by this PR
• Pre-Commit Checks were ran and passed
• Tests were ran and passed

Description

This PR aims at allowing to create "sub" factories from concrete factories (i.e: a factory with a __model__ set) without having to pass the model argument to the create_factory method.

In this case, when the model argument is omitted, the __model__ of the receiving factory will be used by default, increasing code readability and making the dynamic mode working the same way as the imperative style.

The PR includes the change, the tests and the documentation update.

from dataclasses import dataclass

from polyfactory.factories import DataclassFactory

@dataclass
class Foo:
    bar: str

# Imperative mode
class FooFactory(DataclassFactory):
    __model__ = Foo

class BarFactory(FooFactory):
    bar = "bar"

# Dynamic mode (after this PR)
foo_factory = DataclassFactory.create_factory(Foo)
bar_factory = foo_factory.create_factory(bar="bar")

Close Issue(s)

Closes #357

[guacs]

Thank you!

[g0di]

I made the change as suggested but pyright is not happy. It was the reason why I've made it the previous way. Do you want me to simply turn off the pyright warning for that line or have any suggestion?

[guacs]

Aah gotcha. I think a pyright ignore is good for that line since I think it's better to have the AttributeError as the __cause__ than do workarounds for satisfying the type checkers.

[g0di]

Aah gotcha. I think a pyright ignore is good for that line since I think it's better to have the AttributeError as the __cause__ than do workarounds for satisfying the type checkers.

Fine, I've made the change 🤓

[github-actions]

Documentation preview will be available shortly at https://litestar-org.github.io/polyfactory-docs-preview/429

[guacs]

@g0di sorry for the delay! Thank you very much for the contribution :)

[guacs]

@all-contributors add @g0di for code, docs, test

[allcontributors]

@guacs

I've put up a pull request to add @g0di! 🎉