node-red-contrib-orm-objection

node-red-contrib-orm-objection

Node-RED node to query a MySQL database with the Objection ORM.

Official repository: https://github.com/frederic-bonjour/node-red-contrib-orm-objection

Installation

• Install this Node from the Node-RED palette.
• Create a JS file that describes all your models (see Objection doc). This file must export an object with the model names as keys.
• In the settings.js file of your Node-RED installation, import this file in the functionGlobalContext section :

functionGlobalContext: {
    // os:require('os'),
    objectionModels: require('./models')
},

(Of course, change the ./models path to suit your needs.)

Finally, restart Node-RED.

Usage

Select

• Insert a storage/Objection ORM into your Flow and configure the database connection.
• Optionnaly select a Model name (or use msg.topic in the incoming message).
• Optionnaly select the graph to be fetched along with the model (or use msg.graph in the incoming message).

The incoming message may contains the following properties:

• where: an object representing the WHERE clause.
• byId: an integer or a String that will be used in the findById() method.
• orderBy: a String to choose on which column the results should be sorted on.

Patch (update)

• Insert a storage/Objection ORM into your Flow and configure the database connection.
• Select a Model name.
• Optionnaly select the graph to be fetched along with the model (or use msg.graph in the incoming message).

The incoming message must contain the following property:

• patch: an object with the 2 properties:
  • id: ID of the model to patch
  • props: object containing the properties to update