@choices representation of RelatedField

[LennyLip]

can we change
https://github.com/tomchristie/django-rest-framework/blob/master/rest_framework/relations.py#L154

from

    return OrderedDict([
        (
            six.text_type(self.to_representation(item)),
            self.display_value(item)
        )
        for item in queryset

to

    return OrderedDict([
        (
            force_text(self.to_representation(item), strings_only=True),
            self.display_value(item)
        )
        for item in queryset

????

When i make OPTION request, i've got metada for related field choices of action:
1st case:

{display_name: "Acura", value: "184"} (this is wrong)

2nd case:

{display_name: "Acura", value: 184} (it's ok)

Here we got field.choices:

https://github.com/tomchristie/django-rest-framework/blob/master/rest_framework/metadata.py#L142

        field_info['choices'] = [
            {
                'value': choice_value,
                'display_name': force_text(choice_name, strings_only=True)
            }
            for choice_value, choice_name in field.choices.items()

value is always string now.

[tomchristie]

Yup, that seems like a valid request to me.
We no longer display relational choices in OPTIONS by default, but the underlying change here is still reasonable & correct.