From dd4d1f3061f08680a120ab7a00775e0804e4238c Mon Sep 17 00:00:00 2001
From: Ludovic Stephan <ludovic.stephan@ens.fr>
Date: Mon, 20 Mar 2017 20:19:04 -0300
Subject: [PATCH] Improves creation efficiency

---
 kfet/management/commands/createopes.py | 26 +++++++++++++-------------
 kfet/models.py                         |  4 ++--
 2 files changed, 15 insertions(+), 15 deletions(-)

diff --git a/kfet/management/commands/createopes.py b/kfet/management/commands/createopes.py
index 75bb23ae..77663b2b 100644
--- a/kfet/management/commands/createopes.py
+++ b/kfet/management/commands/createopes.py
@@ -78,14 +78,15 @@ class Command(BaseCommand):
             # Initialize opegroup amount
             amount = Decimal('0')
 
-            opegroup = OperationGroup(
+            opegroup = OperationGroup.objects.create(
                 on_acc=account,
                 checkout=checkout,
+                at=at,
                 is_cof=account.cofprofile.is_cof
             )
-            opegroup.save()
 
             # Generating operations
+            ope_list = []
             for j in range(random.randint(1, 4)):
                 # Operation type
                 typevar = random.random()
@@ -125,12 +126,12 @@ class Command(BaseCommand):
                         ope.addcost_amount = addcost_amount * nb
                         ope.amount -= ope.addcost_amount
 
-                opes_created += 1
-                ope.save()
+                ope_list.append(ope)
                 amount += ope.amount
 
+            Operation.objects.bulk_create(ope_list)
+            opes_created += len(ope_list)
             opegroup.amount = amount
-            opegroup.at = at
             opegroup.save()
 
         # Transfer generation
@@ -146,25 +147,24 @@ class Command(BaseCommand):
             else:
                 comment = ""
 
-            transfergroup = TransferGroup(
+            transfergroup = TransferGroup.objects.create(
+                at=at,
                 comment=comment,
                 valid_by=random.choice(accounts)
             )
-            transfergroup.save()
 
             # Randomly generate transfer
+            transfer_list = []
             for i in range(random.randint(1, 4)):
-                transfer = Transfer(
+                transfer_list.append(Transfer(
                     group=transfergroup,
                     from_acc=random.choice(accounts),
                     to_acc=random.choice(accounts),
                     amount=Decimal(random.randint(1, 99)/10)
-                )
-                transfer.save()
-                transfers += 1
+                ))
 
-            transfergroup.at = at
-            transfergroup.save()
+            Transfer.objects.bulk_create(transfer_list)
+            transfers += len(transfer_list)
 
         self.stdout.write(
             "- {:d} opérations créées dont {:d} commandes d'articles"
diff --git a/kfet/models.py b/kfet/models.py
index 419cd0a0..4e98c3c8 100644
--- a/kfet/models.py
+++ b/kfet/models.py
@@ -455,7 +455,7 @@ class OrderArticle(models.Model):
     quantity_received = models.IntegerField(default = 0)
 
 class TransferGroup(models.Model):
-    at = models.DateTimeField(auto_now_add = True)
+    at = models.DateTimeField(default=timezone.now)
     # Optional
     comment = models.CharField(
         max_length = 255,
@@ -491,7 +491,7 @@ class OperationGroup(models.Model):
     checkout = models.ForeignKey(
         Checkout, on_delete = models.PROTECT,
         related_name = "opesgroup")
-    at = models.DateTimeField(auto_now_add = True)
+    at = models.DateTimeField(default=timezone.now)
     amount = models.DecimalField(
         max_digits = 6, decimal_places = 2,
         default = 0)