refactor: Update ParseDataComponent to include a separator option

src/backend/base/langflow/components/helpers/ParseData.py

@@ -1,6 +1,6 @@
 from langflow.custom import Component
 from langflow.helpers.data import data_to_text
-from langflow.inputs import MultilineInput, DataInput
+from langflow.inputs import MultilineInput, DataInput, StrInput
 from langflow.template import Output
 from langflow.schema.message import Message
 
@@ -18,6 +18,12 @@ class ParseDataComponent(Component):
             info="The template to use for formatting the data. It can contain the keys {text}, {data} or any other key in the Data.",
             value="{text}"
         ),
+        StrInput(
+            name="sep",
+            display_name="Separator",
+            advanced=True,
+            value='---'
+            )
     ]
 
     outputs = [
@@ -28,6 +34,6 @@ class ParseDataComponent(Component):
         data = self.data if isinstance(self.data, list) else [self.data]
         template = self.template
 
-        result_string = data_to_text(template, data)
+        result_string = data_to_text(template, data, sep=self.sep)
         self.status = result_string
         return Message(text=result_string)

src/backend/base/langflow/helpers/data.py

@@ -19,7 +19,7 @@ def docs_to_data(documents: list[Document]) -> list[Data]:
     return [Data.from_document(document) for document in documents]
 
 
-def data_to_text(template: str, data: Union[Data, list[Data]]) -> str:
+def data_to_text(template: str, data: Union[Data, list[Data]], sep: str = "\n") -> str:
     """
     Converts a list of Data to a list of texts.
 
@@ -40,7 +40,7 @@ def data_to_text(template: str, data: Union[Data, list[Data]]) -> str:
         _data.append(value)
 
     formated_data = [template.format(data=value.data, **value.data) for value in _data]
-    return "\n".join(formated_data)
+    return sep.join(formated_data)
 
 
 def messages_to_text(template: str, messages: Union[Message, list[Message]]) -> str: