Update app.py

app.py

@@ -196,8 +196,12 @@ def create_category_chart(selected_models, selected_categories):
     return fig
 
 def update_detailed_scorecard(model, selected_categories):
-    if model not in models:
-        return [gr.update(visible=True, value="Please select a model to view details.")] + [gr.update(visible=False)] * 2
+    if not model:  # Check if model is None or an empty string
+        return [
+            gr.update(value="Please select a model to view details.", visible=True),
+            gr.update(visible=False),
+            gr.update(visible=False)
+        ]
 
     metadata_md = f"## Model Metadata for {model}\n\n"
     for key, value in models[model]['metadata'].items():
@@ -294,7 +298,14 @@ def update_dashboard(tab, selected_models, selected_model, selected_categories):
         detailed_scorecard_visibility = gr.update(visible=True)
         model_chooser_visibility = gr.update(visible=True)
         category_filter_visibility = gr.update(visible=True)
-        scorecard_updates = update_detailed_scorecard(selected_model, selected_categories)
+        if selected_model:
+            scorecard_updates = update_detailed_scorecard(selected_model, selected_categories)
+        else:
+            scorecard_updates = [
+                gr.update(value="Please select a model to view details.", visible=True),
+                gr.update(visible=False),
+                gr.update(visible=False)
+            ]
         return [leaderboard_visibility, category_chart_visibility, detailed_scorecard_visibility, 
                 model_chooser_visibility, model_multi_chooser_visibility, category_filter_visibility, 
                 gr.update(), gr.update()] + scorecard_updates
@@ -307,8 +318,9 @@ with gr.Blocks(css=css) as demo:
                                  label="Select Tab", value="Leaderboard")
     
     with gr.Row():
-        model_chooser = gr.Dropdown(choices=list(models.keys()), 
+        model_chooser = gr.Dropdown(choices=[""] + list(models.keys()),  # Add an empty option
                                     label="Select Model for Details", 
+                                    value="",  # Set default value to empty string
                                     interactive=True, visible=False)
         model_multi_chooser = gr.Dropdown(choices=list(models.keys()), 
                                           label="Select Models for Comparison",