Add proper check if there is no paragraph created yet in the entity

forgot to change the status!

@loziju I did a quick review of the patch. Why do we need a value in the admin title? And why should it be a uuid?
I think I'd prefer it to be an empty string.

Also have you tested the latest 3.1.5 version?

@basvredeling thanks for looking into this!

It's not really about admin title (paragraph), but about paragraph_field block label (LB block field, see the screenshot → ). Admin title can be blank, as you correctly identified (thus your code tries to get the summary when it's blank). But block label must be populated, even when it's suppressed.

Since that part of the code is trying to obtain the admin title, and then assign it to the label field, I chose to update the code at that portion. After all, layout_builder_paragraphs will need to create the paragraph_field block first before creating the paragraph and therefore there is nothing to be used as label. So might as well using uuid as it's guaranteed to be unique. To be precise, the actual admin title for the paragraph can be blank or non-blank, just that the paragraph is not created yet at the point of creation of paragraph_field block form, thus we need to use some other value for the block label. And more importantly, beyond layout_builder_paragraphs, other new contrib / custom modules can always utilise paragraph_field block form without existing paragraph, so it's important to have proper error handling here.

Furthermore, the purpose of block label is to show the text when "Show content preview" checkbox is unchecked in LB. The admin user of layout_builder_paragraphs can always update the label after the paragraph is inserted into LB. But upon creating the paragraph / paragraph_field block itself, the label is not important.

And finally, for typical use case of paragraph_blocks module, assigning uuid to block label will never happen. This only happens when paragraph is not created while paragraph_field block form is already built.

As for 3.1.5, it gave error with layout_builder_paragraphs, but I didn't have time to look into it yet. I reckon it's due to the new arguments added for the services, which is introduced in 3.1.4. What is inside 3.1.5 that you'd like me to test?

Thanks for the clarification. It's a small patch, without any major consequences so I've merged it into 3.x-dev.
I'll try to add it to a release as soon as I've got some more features/fixes to release.

Thanks for your contribution. I'm eager to see more of that layout_builder_paragraphs module you're working on. Do keep me in the loop. It sounds like it could also be a submodule for paragraph_blocks.

Part of the 3.1.6 and 4.0.0-beta1 releases.