Update app_inference.py

app_inference.py

@@ -127,6 +127,19 @@ def toggle_column(is_checked):
     except Exception as e:
         raise type(e)(f'failed to toggle_column, due to: {e}')
 
+def handle_prompt_change(content_blora_prompt, style_blora_prompt) -> str:
+    try:
+        if content_blora_prompt and style_blora_prompt:
+            return f'{content_blora_prompt} in {style_blora_prompt[0].lower() + style_blora_prompt[1:]} style'
+        if content_blora_prompt:
+            return content_blora_prompt
+        if style_blora_prompt:
+            return f'A dog in {style_blora_prompt[0].lower() + style_blora_prompt[1:]} style'
+
+        return ''
+    except Exception as e:
+        raise type(e)(f'failed to handle_prompt_change, due to: {e}')
+
 
 class InferenceUtil:
     def __init__(self, hf_token: str | None):
@@ -245,14 +258,12 @@ with gr.Blocks(css=css) as demo:
             style_image,
         ])
     style_prompt.change(
-        fn=lambda content_blora_prompt,
-                  style_blora_prompt: f'{content_blora_prompt} in {style_blora_prompt[0].lower() + style_blora_prompt[1:]} style' if style_blora_prompt else content_blora_prompt,
+        fn=handle_prompt_change,
         inputs=[content_prompt, style_prompt],
         outputs=prompt,
     )
     content_prompt.change(
-        fn=lambda content_blora_prompt,
-                  style_blora_prompt: f'{content_blora_prompt} in {style_blora_prompt[0].lower() + style_blora_prompt[1:]} style' if content_blora_prompt else style_blora_prompt,
+        fn=handle_prompt_change,
         inputs=[content_prompt, style_prompt],
         outputs=prompt,
     )