Can langflow support multiple output?

[mcathena]

I'd like to assign multiple output that can connect to different nodes with condition. Are we planning to develop this functionality?

[dosubot]

Hey there @mcathena! Nice to see you back in the orbit of Langflow questions. Hope you've been doing stellar since our last chat! 🌟

Based on the information available, it seems that the current version of langflow (v0.6.10) does not explicitly support multiple outputs for a single node. However, the codebase does contain functionality that could potentially be adapted to support this feature.

The PageComponent code within the langflow codebase demonstrates complex interactions with nodes and edges, including creating, updating, and deleting edges. These interactions are foundational for managing connections between nodes, which is a critical aspect when considering multiple outputs for a single node. For instance, the onConnect function, which is used to handle new connections between nodes, could be adapted to allow a single node to connect to multiple other nodes, effectively supporting multiple outputs. The updateEdge function from React Flow, which is used in the onEdgeUpdate callback, demonstrates the ability to update connections, which could be essential in managing multiple outputs dynamically.

Moreover, the use of a custom node type (genericNode: GenericNode) suggests that the node structure is extendable. By extending the GenericNode component or creating new custom node types, one could implement nodes that inherently support multiple outputs. Here's a simplified example of how you might begin to adapt a custom node to support multiple outputs:

// Assuming GenericNode is a functional component that renders a node
const GenericNode = ({ data }) => {
  return (
    <div>
      {/* Node content here */}
      <div>Node ID: {data.id}</div>
      {/* Example of multiple output handles */}
      <Handle type="source" position={Position.Right} id="a" />
      <Handle type="source" position={Position.Right} id="b" />
    </div>
  );
};

In this example, two handles (outputs) are added to the GenericNode component, each with a unique ID. This is a simplified illustration of how you might begin to adapt the existing node structure to support multiple outputs. The actual implementation would require further adjustments, especially in how edges are managed and connected to these outputs.

As for your question about future development plans, I found a similar open issue titled [Feature Request] Conditional Logic and Branching Pipelines which was last updated on March 13, 2024. This issue suggests that there is interest in developing functionality that could potentially include support for multiple outputs per node. However, without further information or updates from the repository maintainers, it's difficult to say for certain whether this feature will be implemented.

I hope this information is helpful. If you have any further questions or need clarification, please don't hesitate to ask.

Sources

• [Feature Request] Conditional Logic and Branching Pipelines
• src/frontend/src/pages/FlowPage/components/PageComponent/index.tsx
• src/frontend/src/types/flow/index.ts
• src/backend/langflow/template/frontend_node/output_parsers.py
• src/backend/langflow/graph/edge/base.py

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