Better feedback for admin users

I am starting to customise the admin classes for my models so that I can provide extra feedback to the user.

For example I want to report - in the admin page - useful information about how the system will interpret the current state of the object being edited.

I'm doing this by using readonly_fields, that contain the output of method on the ModelAdmin class, a bit like this:

class PersonAdmin(ModelAdmin):
readonly_fields = ['check_address',]

def check_address(self, instance):
return instance.get_full_address or "<span class='errors'>Warning: I am unable to work out an address for this person.</span>"

(the actual examples are rather more complex, but this is the idea).

Does a more elegant way of doing this exist, either in Django's core already, or using some package that makes it easier?

Thanks,

Daniele

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