How to show a message to a django admin after saving a model?

Question

I want to display a message to admins after they save a particular model, something like "Now enable the series".

I can see how I'd do this if it were a list action (message_user) but I can't see how to do this from the main CRUD form.

Does anyone know how?

Thanks

Answer 1

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.