From 3c44500af66a22b9772b86cdec82aa007e2213f2 Mon Sep 17 00:00:00 2001 From: Willy Douhard <willy.douhard@gmail.com> Date: Sun, 26 Nov 2023 14:40:18 +0100 Subject: [PATCH] fix lc placeholder with lcel (#568) --- backend/chainlit/langchain/callbacks.py | 3 +++ 1 file changed, 3 insertions(+) diff --git a/backend/chainlit/langchain/callbacks.py b/backend/chainlit/langchain/callbacks.py index bfa3e1f98b..72254e57fe 100644 --- a/backend/chainlit/langchain/callbacks.py +++ b/backend/chainlit/langchain/callbacks.py @@ -241,9 +241,12 @@ def build_template_messages() -> List[PromptMessage]: if "placeholder" in class_name.lower(): variable_name = lc_message.get( "variable_name" + ) or message_kwargs.get( + "variable_name" ) # type: Optional[str] variable = inputs.get(variable_name, []) placeholder_size = len(variable) + if placeholder_size: template_messages += [ PromptMessage(placeholder_size=placeholder_size)