Improved export_csv script without file creation

routes/export_csv.py

@@ -1,13 +1,14 @@
-from flask import Blueprint, send_file
+from flask import Blueprint, Response
 from models import Asset
 import csv
+import io
 
 export_csv_bp = Blueprint('export_csv', __name__)
 
 @export_csv_bp.route('/export_csv', methods=['POST'])
 def export_csv():
-    outfile = open('inventory_export.csv', 'w', newline='')
-    outcsv = csv.writer(outfile, delimiter='|')
+    output = io.StringIO()
+    outcsv = csv.writer(output, delimiter='|')
     
     records = Asset.query.all() # Fetch all records from the database
     
@@ -18,7 +19,11 @@ def export_csv():
     for record in records:
         outcsv.writerow([getattr(record, column.name) for column in Asset.__mapper__.columns])
     
-    outfile.close()
+    output.seek(0)  # Move cursor to the beginning
     
     # Send the file as a download
-    return send_file('inventory_export.csv', as_attachment=True)
+    return Response(
+        output.getvalue(),
+        mimetype="text/csv",
+        headers={"Content-Disposition": "attachment; filename=inventory_export.csv"}
+    )