Using reflection with Django models to determine module containing the choices?

[Stodge]

Let's say I take the following code from the Django documentatation:

    class Student(models.Model):
        FRESHMAN = 'FR'
        SOPHOMORE = 'SO'
        JUNIOR = 'JR'
        SENIOR = 'SR'
        YEAR_IN_SCHOOL_CHOICES = (
            (FRESHMAN, 'Freshman'),
            (SOPHOMORE, 'Sophomore'),
            (JUNIOR, 'Junior'),
            (SENIOR, 'Senior'),
        )
        year_in_school = models.CharField(
            max_length=2,
            choices=YEAR_IN_SCHOOL_CHOICES,
            default=FRESHMAN,
        )

But instead I want to do:

    from student_app import choices
    class Student(models.Model):
        year_in_school = models.CharField(
            max_length=2,
            choices=choices.YEAR_IN_SCHOOL_CHOICES,
            default=choices.FRESHMAN,
        )

Is there anyway using reflection to determine which module the choices are imported from?

For example:

    field = Student._meta.fields.get_field_by_name('year_in_school')
    choices_source = some_clever_function(field)
    print("Choices imported from %s." % choices_source)

I want the output to be:

Choices imported from student_app.

Obviously the clever function does not exist but hopefully clarifies what I'm trying to do.

Thanks

[Simon Charette]

Given choices are defined at the module level I guess you could

iterate over objects defined in each `sys.modules` (or the ones

likely to define choices) and use the `is` operator to compare all

of them to the field choices.

This will perform badly and shouldn't be used for anything else

than one off debugging reflection though.

Best,

Simon

[Stodge]

Thanks Simon. It's for an offline tool so high performance isn't the top priority.