Get items with same metadata namspace in Blocky - possible?

[a.alakszai (Alakszai)]

Hi Gents,
Is it possible to program this in Blocky?

@lukics

items_with_namespace = [item for item in itemRegistry.getAll() if get_metadata(item.name, "Treppe Gang Gruppe") is not None]

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Get items with same metadata namspace - possible?

I have a rule that sends me once a day a battery status report. The rule loops trough a group that contains all battery items. To apply the right check on a specific item i added to every battery item metatdata that tells me if it is just a switch or a level. My question ist now: Is it possible to get a list of all items with a specifiy metadata namespace? With this i could throw away my battery group and use only the metatdata?

Thanks

[rlkoshak (Rich Koshak)]

Blockly doesn’t have available for the kind of easy filtering and working with arrays/lists that other languages do. The devs of openHAB have even worked with the upstream developers of Blockly itself to see if there would be ways to add it to no avail.

So what you can do is use the inline script block to add some JS code that would otherwise be challenging or impossible to do with the existing blocks.

In this case create a variable using the standard blocks, let’s call it “batteries”.

Then add an inline block with code along these lines:

batteries = items.getItems().filter(i => i.getMetadata("level") !== null);

That will populate the variable batteries with all the Items that have metadata level.

From there you can use the for each block to loop over all the Items and do what ever you want to do with each one using blockly.

You could do it all in the inline script block but I assume you would want to do as much as possible in Blockly instead.

[a.alakszai (Alakszai)]

Thanks Rich, it is very usufull.