📦 feat(JSONDocumentBuilder.py): add JSONDocumentBuilder component to build a Document containing a JSON object using a key and another Document page content

📝 docs(JSONDocumentBuilder.py): add description and field configuration for JSONDocumentBuilder component

src/backend/langflow/components/utilities/JSONDocumentBuilder.py

@@ -0,0 +1,34 @@
+### JSON Document Builder
+
+# Build a Document containing a JSON object using a key and another Document page content.
+
+# **Params**
+
+# - **Key:** The key to use for the JSON object.
+# - **Document:** The Document page to use for the JSON object.
+
+# **Output**
+
+# - **Document:** The Document containing the JSON object.
+
+from langflow import CustomComponent
+from langchain.schema import Document
+
+
+class JSONDocumentBuilder(CustomComponent):
+    display_name: str = "JSON Document Builder"
+    description: str = "Build a Document containing a JSON object using a key and another Document page content."
+    output_types: list[str] = ["Document"]
+    beta = True
+
+    field_config = {
+        "key": {"display_name": "Key"},
+        "document": {"display_name": "Document"},
+    }
+
+    def build(
+        self,
+        key: str,
+        document: Document,
+    ) -> Document:
+        return Document(page_content={key: document.page_content})