✨ feat(loading.py): add support for new prompt templates in instantiate_prompt function

The config.yaml file has been updated to include new prompt templates. In types.py, the input_variables list was not being cleared when prompt or messages were present, which has been fixed. The instantiate_prompt function in loading.py has been updated to support the new prompt templates.
🔀 chore(config): add new prompt templates to config.yaml
🐛 fix(types.py): fix input_variables not being cleared when prompt or messages are present

src/backend/langflow/interface/initialize/loading.py

@@ -97,6 +97,19 @@ def instantiate_prompt(node_type, class_object, params):
         if "tools" not in params:
             params["tools"] = []
         return ZeroShotAgent.create_prompt(**params)
+    if "MessagePromptTemplate" in node_type:
+        # Then we only need the template
+        from_template_params = {
+            "template": params.pop("prompt", params.pop("template", ""))
+        }
+
+        if not from_template_params.get("template"):
+            raise ValueError("Prompt template is required")
+        return class_object.from_template(**from_template_params)
+
+    if node_type == "ChatPromptTemplate":
+        return class_object.from_messages(**params)
+
     return class_object(**params)