From a05a9202e87c632fe5f061274a3a5a52401e2ae7 Mon Sep 17 00:00:00 2001
From: Gabriel Luiz Freitas Almeida <gabriel@logspace.ai>
Date: Fri, 23 Jun 2023 09:04:35 -0300
Subject: [PATCH] =?UTF-8?q?=F0=9F=90=9B=20fix(chains.py):=20set=20required?=
 =?UTF-8?q?=3DTrue=20for=20TemplateField=20'memory'=20=E2=9C=A8=20feat(cha?=
 =?UTF-8?q?ins.py):=20add=20TemplateField=20'chain=5Ftype'=20to=20support?=
 =?UTF-8?q?=20different=20types=20of=20QA=20chains=20The=20'memory'=20fiel?=
 =?UTF-8?q?d=20was=20previously=20set=20to=20required=3DFalse,=20but=20it?=
 =?UTF-8?q?=20is=20actually=20required=20for=20the=20chain=20to=20function?=
 =?UTF-8?q?=20properly.=20This=20fix=20sets=20required=3DTrue=20for=20the?=
 =?UTF-8?q?=20'memory'=20field.?=
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A new TemplateField 'chain_type' has been added to support different types of QA chains. This field is of type 'str', is required, and is a list of options. It allows the user to select the type of QA chain they want to use.
---
 .../langflow/template/frontend_node/chains.py     | 15 ++++++++++++++-
 1 file changed, 14 insertions(+), 1 deletion(-)

diff --git a/src/backend/langflow/template/frontend_node/chains.py b/src/backend/langflow/template/frontend_node/chains.py
index 19ea2e0df..0ed8f1389 100644
--- a/src/backend/langflow/template/frontend_node/chains.py
+++ b/src/backend/langflow/template/frontend_node/chains.py
@@ -13,7 +13,7 @@ class ChainFrontendNode(FrontendNode):
             self.template.add_field(
                 TemplateField(
                     field_type="BaseChatMemory",
-                    required=False,
+                    required=True,
                     show=True,
                     name="memory",
                     advanced=False,
@@ -31,6 +31,19 @@ class ChainFrontendNode(FrontendNode):
                     display_name="Return source documents",
                 )
             )
+            self.template.add_field(
+                TemplateField(
+                    field_type="str",
+                    required=True,
+                    is_list=True,
+                    show=True,
+                    multiline=False,
+                    options=QA_CHAIN_TYPES,
+                    value=QA_CHAIN_TYPES[0],
+                    name="chain_type",
+                    advanced=False,
+                )
+            )
 
     @staticmethod
     def format_field(field: TemplateField, name: Optional[str] = None) -> None: