year check valid or not All form commit

main.py

@@ -6,7 +6,6 @@ import io
 import mysql.connector
 from werkzeug.utils import secure_filename
 
-from config import db_config
 from AppCode.Config import DBConfig
 from AppCode.FileHandler import FileHandler
 from AppCode.DocumentHandler import DocumentHandler
@@ -133,6 +132,23 @@ def update_itr(id):
     return render_template('update_itr.html', record=record)
 
 
+# new new -- check year in table existe or not by using ajax calling.
+@app.route('/check_year', methods=['POST'])
+def check_year():
+    table_name = request.json.get("table")
+    year = request.json.get("year")
+
+    conn = DBConfig.get_db_connection()
+    cursor = conn.cursor()
+
+    query = f"SELECT COUNT(*) FROM {table_name} WHERE year = %s"
+    cursor.execute(query, (year,))
+    result = cursor.fetchone()[0]
+
+    cursor.close()
+    conn.close()
+
+    return {"exists": result > 0}
 
 
 ## ===============================================