Creating a normal preview for contract drafts

back/app/contract/models.py

@@ -125,3 +125,10 @@ class Contract(CrudDocument):
             else datetime.datetime(year=dt.year, month=dt.month, day=dt.day,
                                    hour=0, minute=0, second=0)
         }
+
+
+def replace_variables_in_value(variables, value: str):
+    for v in variables:
+        if v.value:
+            value = value.replace('%{}%'.format(v.key), v.value)
+    return value