Question

The Django admin docs says that it is possible to specify a callable as a value that can be used in list_display. If I need to pass some extra context to the function via function arguments, what’s the best way to accomplish that?

In pseudo code, what I’d like to do is something like:

App realestate:

models.py:

class A(models.Model):
    raw = models.TextField()

admin.py:

from utils import processing

list_display = [processing('realestate app result', True)]

App party:

models.py:

class Person(models.Model):
    raw = models.TextField()

admin.py:

from utils import processing

list_display = [processing('party app result', False)]

utils.py:

def processing(obj, short_description, allow_tags=False):
    def process(obj):
        # do something
        pass
    process.short_description = short_description
    process.allow_tags = allow_tags

    return process(obj)

Answer 1

You should not specify the short_description and allow_tags inside the function itself.

define processing like this:

utils.py:

def processing(obj):
      #do something
      pass

on each ModelAdmin class, do:

class RealestateAdmin(...):
   list_display = [processing,]

   def processing(obj):
       return utils.processing(obj)
   processing.short_description = 'realestate app result'
   processing.allow_tags = True


class PartyAdmin(...):
   list_display = [processing,]

   def processing(obj):
       return utils.processing(obj)
   processing.short_description = 'party app result'
   processing.allow_tags = False

So you have one place (utils.py) which contains the logic.
And every class defines the properties to display in the table.