Get the display name dynamically inside Django view?

Question

I have a model called person like this

class person(models.Model):
    choice1 = ("a","DisplayNameA", "b", "DisplayNameB")
    choice1_field = models.CharField(max_length=1, choices=choice1)
    choice2 = ("c","DisplayNameC", "d", "DisplayNameD")
    choice2_field = models.CharField(max_length=1, choices=choice2)
    # and so on, there are many fields like these

After this, I am trying to generate a CSV file in my views

I can loop through all the fields I need and then access the values dynamically like this

getattr(person_object, field_name)

However this returns “a”, “b” and so on.

I know I can access the display name using get_FOO_display(), where foo is the field’s name. However, as the retrieval of the field is happening dynamically, is there a way to access the display name of a field dynamically? Without having to bind functions?

Asked By: Swetank Poddar

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Source

Answer 1

You can pass get_fieldname_display to the getattr function:

getattr(person_object, 'get_{}_display'.format(field_name))()

or you can make use of the methodcaller of the operator package:

from operator import methodcaller

mygetter = methodcaller('get_{}_display'.format(field_name))

result = mygetter(person_object)

Answered By: Willem Van Onsem

Get the display name dynamically inside Django view?

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