feat(docs): codebase refactor - added src directory

7project/src/backend/app/schemas/transaction.py

@@ -0,0 +1,26 @@
+from typing import List, Optional, Union
+from datetime import date
+from pydantic import BaseModel, Field, ConfigDict
+
+
+class TransactionBase(BaseModel):
+    amount: float = Field(..., gt=-1e18, lt=1e18)
+    description: Optional[str] = None
+    # accept either ISO date string or date object
+    date: Optional[Union[date, str]] = None
+
+class TransactionCreate(TransactionBase):
+    category_ids: Optional[List[int]] = None
+
+class TransactionUpdate(BaseModel):
+    amount: Optional[float] = Field(None, gt=-1e18, lt=1e18)
+    description: Optional[str] = None
+    # accept either ISO date string or date object
+    date: Optional[Union[date, str]] = None
+    category_ids: Optional[List[int]] = None
+
+class TransactionRead(TransactionBase):
+    id: int
+    category_ids: List[int] = []
+    date: Optional[Union[date, str]]
+    model_config = ConfigDict(from_attributes=True)