add - sharing & company fee to pos free products

apps/core/models.py

@@ -1,7 +1,8 @@
-from django.db import models
-from django.conf import settings
 from crum import get_current_user
+from django.conf import settings
 from django.contrib.auth.models import AnonymousUser
+from django.db import models
+
 from .manager import SoftDeleteManager
 
 
@@ -66,3 +67,15 @@ class SystemConfig(BaseModel):
             return cls.objects.get(key=key).value
         except cls.DoesNotExist:
             return default
+
+
+class Wage(BaseModel):
+    key = models.CharField(max_length=100, null=True)
+    value = models.CharField(max_length=100, null=True)
+
+    @classmethod
+    def get(cls, key, quota_identity=None, default=None):
+        try:
+            return cls.objects.get(key=key).value
+        except cls.DoesNotExist:
+            return default