Use type hints in action args/kwargs

[adamghill]

When type annotations are used in args or kwargs in a method used for an action, Unicorn will attempt to coerce the argument into the type annotation. Solves for #514.

# test_component.py
from django_unicorn.components import UnicornView
from datetime import datetime

class TestComponent(UnicornView):
    def check_datetime(self, _datetime: datetime):
        # the `datetime` type annotation tells Unicorn to convert `_datetime` into a `datetime` object
        assert isinstance(_datetime) is datetime

<!-- test-component.html -->
<div>
  <button u:click='check_datetime("2020-09-12T01:01:01")'>check with a static string</button>
  <button u:click='check_datetime("{{ date_example|date:'c' }}")'>check with a dynamic string</button>
  <button u:click='check_datetime({{ date_example|date:'U' }})'>check with epoch (notice no quotes around the arg to check_datetime)</button>
</div>

[winrid]

This is a nice improvement, but I think accessing a datetime in __str__ will still break.

[adamghill]

@winrid Can you provide a test or example code so I can replicate?

[winrid]

@adamghill I'm on my phone but I think if you just return obj.format() where obj is a datetime it breaks when using that object. Just use it in a select or something:

def __str__():
    return mydatetimemodelfield.format()

Will throw because my date is a str on deserialization.