Make the deletion check a default filter on the base model, inherited by

[plstackapi.git] / planetstack / core / models / plcorebase.py

diff --git a/planetstack/core/models/plcorebase.py b/planetstack/core/models/plcorebase.py
index ec79419..2f7fd82 100644 (file)
--- a/planetstack/core/models/plcorebase.py
+++ b/planetstack/core/models/plcorebase.py
@@ -18,16 +18,26 @@ except:
     def notify_observer(*args, **kwargs):
         pass
 
-class PlCoreBase(models.Model):
+# This manager will be inherited by all subclasses because
+# the core model is abstract.
+class PlCoreBaseManager(models.Manager):
+    def get_query_set(self):
+        return super(PlCoreBaseManager, self).get_query_set().filter(deleted=False)
 
     # default values for created and updated are only there to keep evolution
     # from failing.
-
+class PlCoreBase(models.Model):
+    objects = PlCoreBaseManager()
     created = models.DateTimeField(auto_now_add=True, default=datetime.datetime.now())
     updated = models.DateTimeField(auto_now=True, default=datetime.datetime.now())
     enacted = models.DateTimeField(null=True, default=None)
+    backend_status = models.CharField(max_length=140,
+                                      default="Provisioning in progress")
+    deleted = models.BooleanField(default=False)
 
     class Meta:
+        # Changing abstract to False would require the managers of subclasses of
+        # PlCoreBase to be customized individually.
         abstract = True
         app_label = "core"