I run node red in conjunction with home assistant. I would like to have a context variable (like flow.mydatacollection) that contains a json that has normal key-value pairs (that are "manually" updated) and references to other context variables (in my case some global.homeassistant.state/attributes…

[image] dierochade: This is my test flow: [{"id":"ac8c8e6801235d2f","type":"inject","z":"7d8b869bb3b425a1","name":"","props":[{"p":"payload"},{"p":"topic","vt":"str"}],"repeat":"","crontab":"","once":false,"onceDelay":0.1,"topic":"","payload":"0","payloadType":"num","x":2790,"y":160,"wires":[["…

Interesting question! I’ve run into a similar situation before where I needed to reference part of a context variable dynamically, and yeah — it’s a bit tricky to get working cleanly. From what I’ve found, you can kind of work around it by building the variable name as a string and then using flow.…

[image] Steve-Mcl: You will need another means of watching the HA variable change and update your own flow context variables (isn't there a state node that emits on change?) I´ll try to find the reason but if this is not working I will probably go for that route and just use some regex patter…

I'm still unclear of how it's being updated and used in your flow. If by chance you are trying to use context inside a HA node as shown below [image] That is not dynamic. It will read the flow/global on deploy only. If that is not it could you post an example where you encounter the static value. …

Looking over what you wrote, just because you set a flow value to that of a global value does not link them together. Every time the global updates you need to update the flow variable either manually or through an automation.

[image] mikefila: , just because you set a flow value to that of a global value does not link them together. It’s exactly the question if this is possible in any way :grinning_face: As Steve demonstrated with the demo clip it seems to be working for him/under certain circumstances/prerequisi…

As I said before [image] Steve-Mcl: If you assign the value of an object to an object in context, they WILL be references [chrome_VaHkd2ibIZ] [{"id":"2d6df78b1e471cf2","type":"inject","z":"0df4284c28cd9b46","name":"","props":[{"p":"payload"},{"p":"topic","vt":"str"}],"repeat":"","crontab":"…

Home Assistant globals are read only in a sense. They are there for reference only. They can not change the state of an entity inside HA. They can be temporarily changed in NR but will revert back when the entity is updated. To change the state of entities in HA, you should use the action node.

[image] mikefila: They are there for reference only. They can not change the state of an entity inside HA Thats not the point of discussion or the focus of my demo. [image] mikefila: To change the state of entities in HA, you should use the action node. The OPs demo clearly does not d…

In your example, you are setting a home assistant global to a value. I wanted to point out that doesn't work.

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Context variable that (partly) references other context variables dynamically

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Steve-Mcl 18 April 2025 11:29 23

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Context variable that (partly) references other context variables dynamically

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