Add fee field to WEIRegistration to be able to sort on validation status

apps/wei/models.py

@@ -285,6 +285,12 @@ class WEIRegistration(models.Model):
                     "encoded in JSON"),
     )
 
+    fee = models.PositiveIntegerField(
+        default=0,
+        verbose_name=_('fee'),
+        blank=True,
+    )
+
     class Meta:
         unique_together = ('user', 'wei',)
         verbose_name = _("WEI User")
@@ -309,7 +315,25 @@ class WEIRegistration(models.Model):
         self.information_json = json.dumps(information, indent=2)
 
     @property
-    def fee(self):
+    def is_validated(self):
+        try:
+            return self.membership is not None
+        except AttributeError:
+            return False
+
+    @property
+    def validation_status(self):
+        """
+        Define an order to have easier access to validatable registrations
+        """
+        if self.fee + (self.wei.deposit_amount if self.deposit_type == 'note' else 0) > self.user.note.balance:
+            return 2
+        elif self.first_year:
+            return 1
+        else:
+            return 0
+
+    def calculate_fee(self):
         bde = Club.objects.get(pk=1)
         kfet = Club.objects.get(pk=2)
 
@@ -336,12 +360,9 @@ class WEIRegistration(models.Model):
 
         return fee
 
-    @property
-    def is_validated(self):
-        try:
-            return self.membership is not None
-        except AttributeError:
-            return False
+    def save(self, *args, **kwargs):
+        self.fee = self.calculate_fee()
+        super().save(*args, **kwargs)
 
 
 class WEIMembership(Membership):