Adding a price widget

api/app/transaction/models.py

@@ -82,9 +82,10 @@ class SplitWrite(SplitBase):
             }
         }
     })
+    amount: str = PydField(json_schema_extra={"format": "price-bgdc"})
 
 class TransactionWrite(TransactionBase):
-    splits: list[SplitWrite] = Field()
+    splits: list[SplitWrite] = PydField(json_schema_extra={"minItems": 1})
 
 class TransactionCreate(TransactionWrite):
     pass