node-red-contrib-literal-utils 1.0.2

Node Red Utility Nodes to work with literals and arrays.

npm install node-red-contrib-literal-utils

Overview

Utility nodes for working with literal values.

Note, we also describe some cases where Out of the Box functionality may also compare.

Array

Nodes to help with working with Arrays.

Pick Array Value

Given an array of objects, picks a value within each object to put inside of an array.

(This works very well with other nodes like node-red-contrib-serial-iterator

For example, we want the following:

[
	 "/services/data/v42.0/sobjects/AcceptedEventRelation",
	 "/services/data/v42.0/sobjects/Account",
	 "/services/data/v42.0/sobjects/AccountChangeEvent",
	 "/services/data/v42.0/sobjects/AccountCleanInfo"
]

From a message like the following:

{
  "payload": {
	"results": {
	  "sobjects": [
		{
		  "name": "AcceptedEventRelation",
		  "urls": {
			"sobject": "/services/data/v42.0/sobjects/AcceptedEventRelation"
		  }
		},
		{
		  "name": "Account",
		  "urls": {
			"sobject": "/services/data/v42.0/sobjects/Account"
		  }
		},
		{
		  "name": "AccountChangeEvent",
		  "urls": {
			"sobject": "/services/data/v42.0/sobjects/AccountChangeEvent"
		  }
		},
		{
		  "name": "AccountCleanInfo",
		  "urls": {
			"sobject": "/services/data/v42.0/sobjects/AccountCleanInfo"
		  }
		}
	  ]
	}
  }
}

We would like a collection of all the 'sobject' values...

If we configure the node with the following

• arrayPath: 'payload.results.sobjects'
• valuePath: 'urls.sobject'
• targetPath: 'payload.objectUrls'

We'll get:

{
   "payload":{
	  "results":{
		 "sobjects":[
			...
		 ]
	  },
	  "objectUrls":[
		 "/services/data/v42.0/sobjects/AcceptedEventRelation",
		 "/services/data/v42.0/sobjects/Account",
		 "/services/data/v42.0/sobjects/AccountChangeEvent",
		 "/services/data/v42.0/sobjects/AccountCleanInfo"
	  ]
   }
}

Example Flow

[{"id":"195e7da2.f7e152","type":"tab","label":"Flow 1","disabled":false,"info":""},{"id":"84b77a17.25be68","type":"inject","z":"195e7da2.f7e152","name":"Inject example data","topic":"","payload":"{\"results\":{\"sobjects\":[{\"name\":\"AcceptedEventRelation\",\"urls\":{\"sobject\":\"/services/data/v42.0/sobjects/AcceptedEventRelation\"}},{\"name\":\"Account\",\"urls\":{\"sobject\":\"/services/data/v42.0/sobjects/Account\"}},{\"name\":\"AccountChangeEvent\",\"urls\":{\"sobject\":\"/services/data/v42.0/sobjects/AccountChangeEvent\"}},{\"name\":\"AccountCleanInfo\",\"urls\":{\"sobject\":\"/services/data/v42.0/sobjects/AccountCleanInfo\"}}]}}","payloadType":"json","repeat":"","crontab":"","once":false,"onceDelay":0.1,"x":170,"y":140,"wires":[["f19fef07.d63f1","a03caddb.c460d"]]},{"id":"f19fef07.d63f1","type":"pick-array-value","z":"195e7da2.f7e152","name":"","arrayPath":"payload.results.sobjects","valuePath":"urls.sobject","targetPath":"payload.urls","x":440,"y":140,"wires":[["a896839a.1e206"]]},{"id":"a896839a.1e206","type":"debug","z":"195e7da2.f7e152","name":"","active":true,"tosidebar":true,"console":false,"tostatus":false,"complete":"false","x":670,"y":140,"wires":[]},{"id":"f42689cd.93e158","type":"comment","z":"195e7da2.f7e152","name":"pick values into array","info":"","x":440,"y":100,"wires":[]},{"id":"a03caddb.c460d","type":"change","z":"195e7da2.f7e152","name":"JSONata example","rules":[{"t":"set","p":"payload.urls","pt":"msg","to":"(\t    $map(payload.results.sobjects, function($val, $index, $array) {\t       $val.urls.sobject\t    })\t)","tot":"jsonata"}],"action":"","property":"","from":"","to":"","reg":false,"x":450,"y":260,"wires":[["f8952828.8b4148"]]},{"id":"cc3f35ab.8b7218","type":"comment","z":"195e7da2.f7e152","name":"Recreate with standard JSONata - although not as safely and more confusing..","info":"","x":540,"y":220,"wires":[]},{"id":"f8952828.8b4148","type":"debug","z":"195e7da2.f7e152","name":"","active":true,"tosidebar":true,"console":false,"tostatus":false,"complete":"false","x":720,"y":260,"wires":[]}]

Props

Extending

Running Tests

• To test the project run npm run test or npm run test:watch to continuously test.

Running Linter

• To run linters on the project, run npm run lint or npm run lint:watch to continously lint.