From: Diane Trout <diane@caltech.edu>
Date: Wed, 27 Jun 2012 22:56:37 +0000 (-0700)
Subject: Only allow one default cluster station or sequencer to be set
X-Git-Tag: v0.5.5~2
X-Git-Url: http://woldlab.caltech.edu/gitweb/?p=htsworkflow.git;a=commitdiff_plain;h=eff287e0df7a104a140e3e04cb636219ad01f50b

Only allow one default cluster station or sequencer to be set

Works by watching for the pre_save signal for those classes
and if it sees that the isdefault flag being set to true it
goes through all the other records and sets isdefault to null.
---

diff --git a/htsworkflow/frontend/experiments/models.py b/htsworkflow/frontend/experiments/models.py
index 20131e4..1b3674c 100644
--- a/htsworkflow/frontend/experiments/models.py
+++ b/htsworkflow/frontend/experiments/models.py
@@ -71,7 +71,7 @@ class ClusterStation(models.Model):
         """Clear default if needed
         """
         if instance.isdefault:
-            for c in ClusterStation.objects.all():
+            for c in ClusterStation.objects.filter(isdefault=True).all():
                 if c.id != instance.id:
                     c.isdefault = False
                     c.save()
@@ -118,7 +118,7 @@ class Sequencer(models.Model):
         """Clear default if needed
         """
         if instance.isdefault:
-            for s in Sequencer.objects.all():
+            for s in Sequencer.objects.filter(isdefault=True).all():
                 if s.id != instance.id:
                     s.isdefault = False
                     s.save()