Discussion:
Using reflection with Django models to determine module containing the choices?
(too old to reply)
Stodge
2018-12-10 15:33:35 UTC
Permalink
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
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