How do I trigger a Celery task from Django admin? - django

Question

I have a model called Publication and I'd like to add a button to the list view in Django Admin which would allow triggering a Celery task.
admin.py:
from django.contrib import admin
from .models import Publication
class PublicationAdmin(admin.ModelAdmin):
change_list_template = "variants/admin_publication_list.html"
def update(self, request):
# trigger task
# redirect to admin list
admin.site.register(Publication, PublicationAdmin)
variants/admin_publication_list.html:
{% extends 'admin/change_list.html' %}
{% block object-tools %}
<li>
<a href="/admin/variants/publication/update/">
Update
</a>
</li>
{{ block.super }}
{% endblock %}
However when I press a button I only get a notice:
Publication with ID “update” doesn’t exist. Perhaps it was deleted?

Answer 1

Method name update or route name update is too generic and sometimes used by frameworks automatically, try naming it to match your functionality. revoke-publications or sync-publications.
admin.py:
from django.contrib import admin
from django.urls import path
from django.http import HttpResponseRedirect
from .models import Publication
from .tasks import your_celery_task
#admin.register(Publication)
class PublicationAdmin(admin.ModelAdmin):
change_list_template = "variants/admin_publication_list.html"
def get_urls(self):
urls = super().get_urls()
my_urls = [
path('update-publications/', self.publication_update),
]
return my_urls + urls
def publication_update(self, request):
result = your_celery_task.delay("some_arg")
self.message_user(
request,
f"Task with the ID: {result.task_id} was added to queue. Last known status: {result.status}"
)
return HttpResponseRedirect("../")
variants/admin_publication_list.html:
{% extends 'admin/change_list.html' %}
{% block object-tools %}
<div>
<form action="update-publications/" method="POST">
{% csrf_token %}
<button type="submit">Run Celery Task</button>
</form>
</div>
<br />
{{ block.super }}
{% endblock %}