Update app.py

app.py

@@ -36,7 +36,6 @@ def add_to_header(event):
         for option in selected_options:
             if option not in buttons_to_add:  # Check if option is already in header
                 buttons_to_add.append(option)  # Add to header if not already present
-                filter_list.options.remove(option)  # Remove from filter list options
         filter_list.value = []  # Clear the selected options after adding them to the header
         update_header()  # Update the header after adding options
 
@@ -47,7 +46,6 @@ def update_header():
     header_buttons.clear()  # Clear the existing buttons
     for button_name in buttons_to_add:
         header_button = pn.widgets.Button(name=button_name, width=50, sizing_mode='fixed')
-        header_button.param.custom_name = button_name  # Add custom attribute to store button name
         header_button.on_click(remove_from_header)  # Add callback to remove the header button
         header_buttons.append(header_button)
 
@@ -62,11 +60,12 @@ filter_list = pn.widgets.MultiChoice(
     placeholder="Search Topics"
 )
 
-# Callback to remove the clicked header button and add it back to the filter list options
+# Callback to remove the clicked header button
 def remove_from_header(event):
-    button_name = event.obj.param.custom_name  # Get the custom attribute to identify the button
-    filter_list.options.append(button_name)  # Add back to the filter list options
-    buttons_to_add.remove(button_name)  # Remove from the header buttons list
+    button = event.obj  # Get the clicked button
+    if button.name in buttons_to_add:
+        buttons_to_add.remove(button.name)  # Remove from the header buttons list
+        filter_list.options.append(button.name)  # Add back to the filter list options
     update_header()  # Update the header and filter list
 
 # Layout using Template