Update app.py

app.py

@@ -238,11 +238,40 @@ with gr.Blocks(css=".gr-dropdown { max-height: 100px; overflow-y: auto; font-siz
             language_filter = gr.Dropdown(label="Filter by Language", choices=["All", "English", "French", "Spanish", "German", "Portuguese", "Chinese", "Arabic", "Hindi"], value="All")
             table_html = gr.HTML(label="Matching Participants")
 
+        
+def update_dropdown_choices():
+    with open(DATA_FILE, "r") as f:
+        data = json.load(f)
+    df = pd.DataFrame(data)
+
+    country_choices = sorted(df["Country"].dropna().unique()) if "Country" in df else []
+    city_choices = sorted(df["City"].dropna().unique()) if "City" in df else []
+    language_set = set()
+    if "Languages" in df:
+        for lang_list in df["Languages"].dropna():
+            if isinstance(lang_list, list):
+                language_set.update(lang_list)
+            elif isinstance(lang_list, str):
+                language_set.update(lang_list.split(", "))
+    return (
+        gr.update(choices=["All"] + list(country_choices), value="All"),
+        gr.update(choices=["All"] + list(city_choices), value="All"),
+        gr.update(choices=["All"] + sorted(language_set), value="All")
+    )
+
+with demo:
+    demo.load(
+        fn=lambda: filter_by_fields("All", "All", "All"),
+        inputs=[],
+        outputs=[table_html]
+    )
+    
+    demo.load(fn=update_dropdown_choices, outputs=[country_filter, city_filter, language_filter])
+
         country_filter.change(fn=update_city_filter, inputs=[country_filter], outputs=[city_filter])
         country_filter.change(fn=filter_by_fields, inputs=[country_filter, city_filter, language_filter], outputs=[table_html])
         city_filter.change(fn=filter_by_fields, inputs=[country_filter, city_filter, language_filter], outputs=[table_html])
         language_filter.change(fn=filter_by_fields, inputs=[country_filter, city_filter, language_filter], outputs=[table_html])
-
     
     submit_btn.click(
         fn=submit_profile,