add filter on relation example

the_app/api/shakespeare.py

@@ -0,0 +1,15 @@
+from fastapi import APIRouter, Depends, status
+from sqlalchemy.ext.asyncio import AsyncSession
+
+from the_app.database import get_db
+from the_app.models.shakespeare import Paragraph
+
+router = APIRouter(prefix="/v1/shakespeare")
+
+
+@router.get("/",)
+async def find_paragraph(
+    character: str,
+    db_session: AsyncSession = Depends(get_db),
+):
+    return await Paragraph.find(db_session=db_session, character=character)