LangChain Code node methods
n8n provides these methods to make it easier to perform common tasks in the LangChain Code node.
LangChain Code node methods
n8n provides these methods to make it easier to perform common tasks in the LangChain Code node.
LangChain Code node only
These variables are for use in expressions in the LangChain Code node. You can't use them in other nodes.
| Method | Description |
|---|---|
this.addInputData(inputName, data) | Populate the data of a specified non-main input. Useful for mocking data.
|
this.addOutputData(outputName, data) | Populate the data of a specified non-main output. Useful for mocking data.
|
this.getInputConnectionData(inputName, itemIndex, inputIndex?) | Get data from a specified non-main input.
|
this.getInputData(inputIndex?, inputName?) | Get data from the main input. |
this.getNode() | Get the current node. |
this.getNodeOutputs() | Get the outputs of the current node. |
this.getExecutionCancelSignal() | Use this to stop the execution of a function when the workflow stops. In most cases n8n handles this, but you may need to use it if building your own chains or agents. It replaces the Cancelling a running LLMChain code that you'd use if building a LangChain application normally. |
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