[Django]-How to show a message to a django admin after saving a model?

Old question, but worth at least a small example as I think this is quite a common issue.

@Davor Lucic pointed to the right solution.
As of today, Django ships with a cool message framework that helps a lot with this.

So, say you want to give notice within the Django Admin whenever a car object within your Car model changes owner, you could do something like that:

admin.py

from django.contrib import admin
from django.contrib import messages

from .models import Car


@admin.register(Car)
class CarAdmin(admin.ModelAdmin):
    list_display = ('owner', 'color', 'status', 'max_speed', )

    def save_model(self, request, obj, form, change):
        if 'owner' in form.changed_data:
            messages.add_message(request, messages.INFO, 'Car has been sold')
        super(CarAdmin, self).save_model(request, obj, form, change)

It’s worth mentioning that if you want to include HTML tags in your message, you have to add:

from django.utils.safestring import mark_safe

which allows you to do something like:

messages.add_message(request, messages.INFO, mark_safe("Please see <a href='/destination'>here</a> for further details"))

No need to say you’d better be sure the code you’re adding is REALLY safe.

Nothing exceptional, but maybe (and hopefully) someone will find it useful.

You can override save_model method on ModelAdmin so you can add message using message framework after you save your object.

@Seether answer is right but it display 2 messages as mentioned by @Uday in comment.

Display only one custom message

Answered by @Dylan For anyone who needs to eliminate the automatic Django success message in a more flexible way or

from django.contrib import messages

class SomeAdmin(admin.ModelAdmin):
      def message_user(self, *args): # overridden method
            pass

      def save_model(self, request, obj, form, change):

          messages.add_message(request, messages.INFO, 'Custom message goes here')

Overriding "save_model()", you can set and show a custom message and don’t forget to import "messages" as shown below:

from django.contrib import admin
from .models import MyModel
from django.contrib import messages # Here

@admin.register(MyModel)
class MyModelAdmin(admin.ModelAdmin):
    # Here
    def save_model(self, request, obj, form, change):
        obj.save()
        messages.add_message(request, messages.INFO, 'Custom Message')