[experiments] Allow users to change experiments that were partially run

beat/web/experiments/models.py

@@ -549,10 +549,13 @@ class Experiment(Shareable):
 
             # Ties the block in
             slots = job_description.get('nb_slots')
-            b, _ = Block.objects.get_or_create(experiment=self,
-                name=block_name, algorithm=algorithm)
+            b = Block.objects.filter(experiment=self, name=block_name).first()
+            if b is None:
+                b = Block(experiment=self, name=block_name, algorithm=algorithm)
+            else:
+                b.algorithm = algorithm
             b.command=simplejson.dumps(job_description, indent=4)
-            b.status=Block.NOT_CACHED if (self.status == Experiment.PENDING) else b.status
+            b.status=Block.NOT_CACHED
             b.analyzer=algorithm.analysis()
             b.environment=env
             b.queue=queue