feat: Add raw content output for File component (#8515)

* Add raw content output for File component

* Update src/backend/base/langflow/base/data/base_file.py

Co-authored-by: coderabbitai[bot] <136622811+coderabbitai[bot]@users.noreply.github.com>

* [autofix.ci] apply automated fixes

* [autofix.ci] apply automated fixes

---------

Co-authored-by: coderabbitai[bot] <136622811+coderabbitai[bot]@users.noreply.github.com>
Co-authored-by: autofix-ci[bot] <114827586+autofix-ci[bot]@users.noreply.github.com>
Co-authored-by: Edwin Jose <edwin.jose@datastax.com>

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

@@ -175,6 +175,7 @@ class BaseFileComponent(Component, ABC):
 
     _base_outputs = [
         Output(display_name="Loaded Files", name="dataframe", method="load_files"),
+        Output(display_name="Raw Content", name="message", method="load_files_message"),
     ]
 
     @abstractmethod
@@ -236,6 +237,26 @@ class BaseFileComponent(Component, ABC):
             return [Data()]
         return data_list
 
+    def load_files_message(self) -> Message:
+        """Load files and return as Message.
+
+        Returns:
+            Message: Message containing all file data
+        """
+        data_list = self.load_files_core()
+        if not data_list:
+            return Message()  # No data -> empty message
+
+        sep: str = getattr(self, "separator", "\n\n") or "\n\n"
+
+        parts: list[str] = []
+        for d in data_list:
+            # Prefer explicit text if available, fall back to full dict, lastly str()
+            text = (getattr(d, "get_text", lambda: None)() or d.data.get("text")) if isinstance(d.data, dict) else None
+            parts.append(text if text is not None else str(d))
+
+        return Message(text=sep.join(parts))
+
     def load_files(self) -> DataFrame:
         """Load files and return as DataFrame.
 

src/backend/base/langflow/initial_setup/starter_projects/Document Q&A.json

@@ -812,6 +812,20 @@
                   "DataFrame"
                 ],
                 "value": "__UNDEFINED__"
+              },
+              {
+                "allows_loop": false,
+                "cache": true,
+                "display_name": "Raw Content",
+                "group_outputs": false,
+                "method": "load_files_message",
+                "name": "message",
+                "selected": "Message",
+                "tool_mode": true,
+                "types": [
+                  "Message"
+                ],
+                "value": "__UNDEFINED__"
               }
             ],
             "pinned": false,

src/backend/base/langflow/initial_setup/starter_projects/Portfolio Website Code Generator.json

@@ -1823,6 +1823,20 @@
                   "DataFrame"
                 ],
                 "value": "__UNDEFINED__"
+              },
+              {
+                "allows_loop": false,
+                "cache": true,
+                "display_name": "Raw Content",
+                "group_outputs": false,
+                "method": "load_files_message",
+                "name": "message",
+                "selected": "Message",
+                "tool_mode": true,
+                "types": [
+                  "Message"
+                ],
+                "value": "__UNDEFINED__"
               }
             ],
             "pinned": false,

src/backend/base/langflow/initial_setup/starter_projects/Text Sentiment Analysis.json

@@ -181,7 +181,9 @@
             "dataType": "File",
             "id": "File-m5GWE",
             "name": "message",
-            "output_types": []
+            "output_types": [
+              "Message"
+            ]
           },
           "targetHandle": {
             "fieldName": "input_value",
@@ -195,7 +197,7 @@
         "id": "xy-edge__File-m5GWE{œdataTypeœ:œFileœ,œidœ:œFile-m5GWEœ,œnameœ:œmessageœ,œoutput_typesœ:[œMessageœ]}-OpenAIModel-Hl8vG{œfieldNameœ:œinput_valueœ,œidœ:œOpenAIModel-Hl8vGœ,œinputTypesœ:[œMessageœ],œtypeœ:œstrœ}",
         "selected": false,
         "source": "File-m5GWE",
-        "sourceHandle": "{œdataTypeœ: œFileœ, œidœ: œFile-m5GWEœ, œnameœ: œmessageœ, œoutput_typesœ: []}",
+        "sourceHandle": "{œdataTypeœ: œFileœ, œidœ: œFile-m5GWEœ, œnameœ: œmessageœ, œoutput_typesœ: [œMessageœ]}",
         "target": "OpenAIModel-Hl8vG",
         "targetHandle": "{œfieldNameœ: œinput_valueœ, œidœ: œOpenAIModel-Hl8vGœ, œinputTypesœ: [œMessageœ], œtypeœ: œstrœ}"
       },
@@ -207,7 +209,9 @@
             "dataType": "File",
             "id": "File-m5GWE",
             "name": "message",
-            "output_types": []
+            "output_types": [
+              "Message"
+            ]
           },
           "targetHandle": {
             "fieldName": "text",
@@ -221,7 +225,7 @@
         "id": "xy-edge__File-m5GWE{œdataTypeœ:œFileœ,œidœ:œFile-m5GWEœ,œnameœ:œmessageœ,œoutput_typesœ:[œMessageœ]}-Prompt-AJxY8{œfieldNameœ:œtextœ,œidœ:œPrompt-AJxY8œ,œinputTypesœ:[œMessageœ],œtypeœ:œstrœ}",
         "selected": false,
         "source": "File-m5GWE",
-        "sourceHandle": "{œdataTypeœ: œFileœ, œidœ: œFile-m5GWEœ, œnameœ: œmessageœ, œoutput_typesœ: []}",
+        "sourceHandle": "{œdataTypeœ: œFileœ, œidœ: œFile-m5GWEœ, œnameœ: œmessageœ, œoutput_typesœ: [œMessageœ]}",
         "target": "Prompt-AJxY8",
         "targetHandle": "{œfieldNameœ: œtextœ, œidœ: œPrompt-AJxY8œ, œinputTypesœ: [œMessageœ], œtypeœ: œstrœ}"
       }
@@ -274,6 +278,20 @@
                   "DataFrame"
                 ],
                 "value": "__UNDEFINED__"
+              },
+              {
+                "allows_loop": false,
+                "cache": true,
+                "display_name": "Raw Content",
+                "group_outputs": false,
+                "method": "load_files_message",
+                "name": "message",
+                "selected": "Message",
+                "tool_mode": true,
+                "types": [
+                  "Message"
+                ],
+                "value": "__UNDEFINED__"
               }
             ],
             "pinned": false,

src/backend/base/langflow/initial_setup/starter_projects/Vector Store RAG.json

@@ -2405,6 +2405,20 @@
                   "DataFrame"
                 ],
                 "value": "__UNDEFINED__"
+              },
+              {
+                "allows_loop": false,
+                "cache": true,
+                "display_name": "Raw Content",
+                "group_outputs": false,
+                "method": "load_files_message",
+                "name": "message",
+                "selected": "Message",
+                "tool_mode": true,
+                "types": [
+                  "Message"
+                ],
+                "value": "__UNDEFINED__"
               }
             ],
             "pinned": false,