The TL;DR answer:
You need to add a new method
has_delete_permission in the Admin class where you want to disable the delete function.
from django.contrib import admin
list_display = ("name", "id", "is_active", "domain_name")
def has_delete_permission(self, request, obj=None):
# Disable delete
The Detailed Answer:
delete option in Django admin, the first thing we need to check how does Django admin work. If you open the
ModelAdmin class code you would be able to see the
has_delete_permission getting called on to see if the user who is making the request has permission to delete or not.
Whenever a Django admin user would be making the request we check if the user has permission to make delete operation. Now We want to disable the delete operation for all users so, the best way is to
return False for any request when made.
If you override this method then automatically the all Django admin user request would start calling it. I would always recommend to turning the
delete feature from admin, why so? Because I have seen way too many times people deleting production data accidentally when they have the feature this easy.
Now the question comes, what would be a better way to disable
delete feature throughout all admins. You can manually add the method and disable but this is not scalable since you never know when the developer would forget to add the method. So now the question comes how to solve it in a better way?
In my experience always write a wrapper over such systems so that you have better control. Like tomorrow you want a particular user to give delete access then you cannot manually go to all places and change the code. Here comes the inheritance concept
The above custom admin should be used throughout the project.
Now automatically any admin using the
BaseAdmin would have
delete feature disabled. Tomorrow someone wants to enable the delete functionality for a particular user, then they need to update just one place.