Implement basic varnish purging

This allows all models inherited from PgModel to specify which
URLs to purge by either setting a field or defining a function
called purge_urls, at which point they will be purged whenever
the save signal is fired.

Also implements a form under /admin/purge/ that allows for manual
purging. This should probably be extended in the future to show
the status of the pgq slaves, but that will come later.

Includes a SQL function that posts the expires to a pgq queue. For
a local deployment, this can be replaced with a simple void function
to turn off varnish purging.

1 files changed, 2 insertions, 1 deletions

diff --git a/pgweb/profserv/models.py b/pgweb/profserv/models.py
index 19b125fb..73a663a7 100644
--- a/pgweb/profserv/models.py
+++ b/pgweb/profserv/models.py
@@ -4,7 +4,7 @@ from django.contrib.auth.models import User
 from pgweb.core.models import Organisation
 from pgweb.util.bases import PgModel
 
-class ProfessionalService(models.Model):
+class ProfessionalService(PgModel, models.Model):
 	submitter = models.ForeignKey(User, null=False, blank=False)
 	approved = models.BooleanField(null=False, blank=False, default=False)
 
@@ -28,6 +28,7 @@ class ProfessionalService(models.Model):
 	provides_hosting = models.BooleanField(null=False, default=False)
 	interfaces = models.CharField(max_length=512, null=True, blank=True)
 	
+	purge_urls = ('support/professional_', )
 	
 	send_notification = True