fix: complete catalog pagination and recovery states

app/admin.py

@@ -2,6 +2,7 @@ from fastapi import APIRouter, BackgroundTasks, Depends, Form, Request
 from fastapi.responses import HTMLResponse, RedirectResponse
 from fastapi.templating import Jinja2Templates
 from sqlalchemy import desc, func, select
+from sqlalchemy.exc import SQLAlchemyError
 from sqlalchemy.orm import Session
 
 from app.config import Settings, get_settings
@@ -93,19 +94,23 @@ def directory(
     parsed_started_to = _parse_date(started_to)
     parsed_has_email = None if has_email in (None, "") else has_email == "true"
     parsed_has_academic_degree = None if has_academic_degree in (None, "") else has_academic_degree == "true"
-    page = list_employees_page(
-        db,
-        status=status,
-        q=q,
-        started_from=parsed_started_from,
-        started_to=parsed_started_to,
-        has_email=parsed_has_email,
-        has_academic_degree=parsed_has_academic_degree,
-        sort=sort,
-        direction=direction,
-        limit=limit,
-        offset=offset,
-    )
+    try:
+        page = list_employees_page(
+            db,
+            status=status,
+            q=q,
+            started_from=parsed_started_from,
+            started_to=parsed_started_to,
+            has_email=parsed_has_email,
+            has_academic_degree=parsed_has_academic_degree,
+            sort=sort,
+            direction=direction,
+            limit=limit,
+            offset=offset,
+        )
+    except SQLAlchemyError:
+        db.rollback()
+        return _render(request, "directory_error.html", {}, status_code=503)
     return _render(
         request,
         "directory.html",
@@ -121,7 +126,7 @@ def directory(
                 "sort": sort,
                 "direction": direction,
                 "limit": page["limit"],
-                "offset": offset,
+                "offset": page["offset"],
             },
         },
     )