Web-component Block Preview doesn't render straight away (v14) | Umbraco | Page 1

honest drum Jan 30, 2025, 10:27 AM

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Has anyone experienced this?

I have made a web-component to act as a block preview for blocks in my v14 block list. I've got it registered correctly using the umbraco-package.json, but when the edit page loads the previews don't load automatically.
They only load when you:

add a new block of that type
drag existing blocks of that type around in the list

Can anyone point me to what I'm missing?

honest drum Jan 30, 2025, 11:14 AM

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@silk elm did you ever run into this problem while developing your BlockPreview package?

silk elm Jan 30, 2025, 11:39 AM

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I do remember there being some sort of race condition early on in v14, where the filter method that checks for anything on that extension point doesn't always load correctly

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What version of 14 are you on?

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@honest drum I've just remembered, I fixed this for Block List in v15! https://github.com/umbraco/Umbraco-CMS/commit/3e7d6341e9c6c7ca71dc9b3e8ddaf89f394d9576

GitHub

Allow checking for `this._contentTypeAlias` before `#extensionSlotF...

…terMethod` runs

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It didn't get backported to v14

honest drum Jan 30, 2025, 11:45 AM

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Ah ha! Yeah, I thought it looked like a race condition.

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On 14.3.1 at the moment locally.

#Web-component Block Preview doesn't render straight away (v14)