Création auto des settings si inexistant

- S'effectue en allant sur la page `Paramètres` (perm
  `kfet.change_settings` nécessaires même pour voir les paramètres)
- Correction websocket perform operations lorsqu'il n'y avait pas de
  majorations en cours

kfet/models.py

@@ -550,5 +550,29 @@ class Settings(models.Model):
         except Settings.DoesNotExist:
             return timedelta()
 
+    @staticmethod
+    def create_missing():
+        s, created = Settings.objects.get_or_create(name='SUBVENTION_COF')
+        if created:
+            s.value_decimal = 25
+            s.save()
+        s, created = Settings.objects.get_or_create(name='ADDCOST_AMOUNT')
+        if created:
+            s.value_decimal = 0.5
+            s.save()
+        s, created = Settings.objects.get_or_create(name='ADDCOST_FOR')
+        s, created = Settings.objects.get_or_create(name='OVERDRAFT_DURATION')
+        if created:
+            s.value_duration = timedelta(days=1) # 24h
+            s.save()
+        s, created = Settings.objects.get_or_create(name='OVERDRAFT_AMOUNT')
+        if created:
+            s.value_decimal = 20
+            s.save()
+        s, created = Settings.objects.get_or_create(name='CANCEL_DURATION')
+        if created:
+            s.value_duration = timedelta(minutes=5) # 5min
+            s.save()
+
 class GenericTeamToken(models.Model):
     token = models.CharField(max_length = 50, unique = True)

kfet/views.py

@@ -670,7 +670,7 @@ def kpsul_perform_operations(request):
         ope_data = {
             'id': operation.pk, 'type': operation.type, 'amount': operation.amount,
             'addcost_amount': operation.addcost_amount,
-            'addcost_for': addcost_for.trigramme,
+            'addcost_for': is_addcost and addcost_for.trigramme or None,
             'is_checkout': operation.is_checkout,
             'article__name': operation.article and operation.article.name or None,
             'article_nb': operation.article_nb,
@@ -878,6 +878,10 @@ class SettingsList(ListView):
     context_object_name = 'settings'
     template_name = 'kfet/settings.html'
 
+    def get_context_data(self, **kwargs):
+        Settings.create_missing()
+        return super(SettingsList, self).get_context_data(**kwargs)
+
 class SettingsUpdate(SuccessMessageMixin, UpdateView):
     model = Settings
     form_class = SettingsForm