Node-BLUE can be easily extended by creating new nodes. New nodes can be written in four programming languages:
This guide describes how to write new nodes in each of them. As the Node-BLUE frontend is based on Node-RED, this documentation is largely based on and citing the Node-RED documentation as well.
Please click on the sections you want to read:
- Creating your first node
- Node initialization and deinitialization
- Code files of simple PHP nodes
- Code files of stateful PHP nodes
- Code files of Python nodes
- Code files of C++ nodes
- HTML file
- Node properties
- Node credentials
- Node appearance
- Node edit dialog
- Editor UI widgets
- Storing context
- Node status
- Configuration nodes
- Help style guilde
- Adding examples
When developing new nodes, please follow the following principles:
- Nodes should be simple to use, regardless how complex the underlying functionality is.
- When a node outputs data, the main information should always be encoded in
- It should never be required to use a function node in combination with nodes.
- Nodes should have a good documentation.
- Errors should always be catched, otherwise they might crash the whole process.
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