Referring to, executing management commands from code,
Is their a way to call this command execution code from the django admin interface?
I've a custom command to do some periodic update of database which has been scheduled as cron. The cron is working fine. I need to update the database manually from the admin interface whenever needed.
update: you can run any management command simply by calling the function call_command('compilemessages') from anywhere within your python code. Note: this obviously is a blocking process from the caller's perspective. With the ajax example below you can have a form of non-blocking/asynchronous user experience. Depending on the backend implementation you can take this isolation level further.
Example:
from django.core.management import call_command
call_command('compilemessages')
If the task is bound to the object currently viewed in the admin, a nice way might be to implement an extra view called by an ajax script when clicking a button. The extra view could optionally be wrapped as a celery task, e.g.
models.py
class Foo(models.Model):
# fields...
def my_task_init(self):
return mark_safe("<img class='loading' src='/static/img/loading.gif' alt='loading' style='display:none;' /><a data-identifier='task_%i' class='task'><img src='/static/img/process.png' style='cursor:pointer;' /></a>") % self.id
my_task_init.allow_tags = True
my_task_init.short_description = _(u"Execute Task")
admin.py
class FooAdmin(admin.ModelAdmin):
list_display = ['other_field', 'my_task_init']
class Media:
js = (
'https://ajax.googleapis.com/ajax/libs/jquery/1.7.2/jquery.js',
'/static/js/admin_tasks.js',
)
def get_urls(self):
urls = super(FooAdmin, self).get_urls()
extra_urls = patterns('',
(r'^my-task/$', self.admin_site.admin_view(self.parse_view))
)
return extra_urls + urls
# optionally decorated by celery
def task_view(self, request):
if not request.is_ajax():
raise Http404
task_id = request.GET.get('task_id')
# your logic
return HttpResponse('Success')
admin_tasks.js
$(document).ready(function (){
$('.task').click(function(){
var image = $(this).find('img'),
loading = $(this).parent().find('.loading'),
task_id = $(this).data('identifier').replace('task_', '');
$.ajax({
type: "GET",
data: ({'task_id': task_id}),
url: "/admin/app/model/my-task/",
beforeSend: function() {
image.hide();
loading.show();
},
statusCode: {
200: function() {
loading.hide();
image.attr('src', '/static/img/success.png');
image.show();
},
404: function() {
loading.hide();
image.attr('src', '/static/img/error.png');
image.show();
},
500: function() {
loading.hide();
image.attr('src', '/static/img/error.png');
image.show();
}
}
});
});
});
If you're trying to initiate an unbound task you could just override a template element or add some html.
post_savesignal for you model to trigger the command.