CODEWITHSUNDEEP
django
ySgPjx
ySgPjx

Reputation: 10265

Override get_FIELD_display method in Django model

Let's say I have a field called field in my model, with a choices parameter defining the values to be returned by the get_field_display method.

I need the get_field_display method to return a different value based on another field. Is there any way to override get_field_display?

This doesn't work:

def get_field_display(self):
    if self.other_field == 1:
        return 'Other value'

    return super.get_field_display(self)

Upvotes: 1

Views: 2240

Answers (2)

user2111922
user2111922

Reputation: 1129

What you can do is to create a different function in the same model, then monkey patch it. For example, in admin.py you may do something like:

ClassName.get_field_display = ClassName.get_patched_field_display

It's not very 'nice' but it works for me.

Upvotes: 1

Chewie
Chewie

Reputation: 7235

You can't call super because the function is defined not by the parent class but by the ModelBase metaclass. Try with this:

def get_field_display(self):

    if self.other_field == 1:
        value = 'Other value'
    else:
        field_object = self._meta.get_field('field')
        value = self._get_FIELD_display(field_object)

    return value

Upvotes: 4

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