Home Home Automation A word or 400 about NodeRED's context explorer

A word or 400 about NodeRED’s context explorer

I was not aware of the NodeRED’s context explorer, so I want to make sure your life with NodeRED is as easy as possible. This tool will save you a lot of time trying to troubleshoot your flows.

NodeRED’s context explorer

Despite my good knowledge of NodeRED, I totally missed this feature. I can only imagine how many of you also never read the changelogs issued by NodeRED. It’s available with NodeRED v0.19, So here is the catchup.

What are contexts?

In my NodeRED for beginners series I explained that NodeRED has 3 built in variables with different scopes:

  • context
  • flow
  • global

These can be set and reused. A super useful feature to get the data outside of the nodes. You can read about the specifics in the link.

To fully enjoy the context data, you should make it persistent, otherwise, it will perish with the NodeRED server reboot. I have the complete guide to that already.

Context Explorer

Open your NodeRED and look at the right side panels. You will find NodeRED’s context explorer. In there you will find 3 sections.

Global

It will display all global values that are currently set across all flows.

Flow

These are just set flow variables that are persistent to that flow.

Node

It will pull all the node context data that is currently set.

All context data can be refreshed on request (see refresh icons) so you can actually observe how your values will change after some actions have been performed. The context data can be saved and refreshed individually as well.

Conclusion

This is a live saver for me as my recent projects have so many variables, that I use a notepad to keep track of how I name it. It would be nice to be able to change the name of the variables from that menu and have this reflected across your flows. Something to look forward in the next updates perhaps? Let me know if you knew about this function in this Reddit thread.

PayPal

Nothing says "Thank you" better than keeping my coffee jar topped up!

Patreon

Support me on Patreon and get an early access to tutorial files and videos.

image/svg+xml

Bitcoin (BTC)

Use this QR to keep me caffeinated in style with crypto-currency

Smart Ideas with

Automate your space in with these ecosystems and integrate it with other automation services

Learn NodeRED

NodeRED for beginners: 1. Why do you need a NodeRED server?

0
To server or not to server? That's a very silly question!

Best Automation Projects

ESP8266 WIFI lights under $5

0
Your Sonoff device can't do this!

Free wireless doorbell (Amazon Dash button hack)

0
The most terrifying situation I can imagine* is missing a parcel

New Amazon Dash Buttons

0
You can teach new buttons old tricks!

ESP8266 ceiling light – demo

0
Testing the ESP8266 as a WIFI light controller

Try Tasker and Raspberry Pi for your home automation needs!

0
Raspberry Pi can help you with your Tasker profiles

Smart Home

Army of robots: SwitchBot Curtain

0
An army of SwitchBot Curtains - adorable CurtainBots to open and close practically any curtains!

Zemismart Roller Shade Driver

0
Frustrated with UK's roller measurements I reached out for Zemismart Roller Shade Driver

Most affordable smart lightbulbs: Sonoff B02 & B05

0
ITEAD just dropped a range of very affordable smart Sonoff lightbulbs

Creepy Alexa for Halloween

0
Turning Amazon Echo into a Creepy Alexa monster for Halloween

How to make Sonoff ZB Mini and ZigBee2MQTT work together

0
It's time to make Sonoff ZB Mini and ZigBee2MQTT work together!