Nested blocks/layouts performance

[mynameisfreedom]

Description
Generally, I am aware that nested blocks and structured fields are performance heavier, but I think this should be on the list for improvements.

For better performance, I rewrote all my blocks and dropped out all nested fields/bocks and structured fields, but I can't remove one thing.

The layout field "grid" doesn't have the possibility for a subgrid inside columns, so I created a block with a Layout field, to accomplish a subgrid. Although this works ok, it slows the panel very much. Panel page with Layout Builder now opens 5 times slower and saves a page 10+ times slower.

Expected behavior
It is understandable that nesting fields will be slower, but not to that extreme extent.

To reproduce

1. Create a Layout field with fieldset of blocks
2. Create a Block with a different Layout field to accomplish subgrid
3. Add that block to the initial set of blocks of the main Layout field.

Your setup

Kirby Version
4.4.1

PHP version
8.3.8

Your system (please complete the following information)

• Device: HP Omen
• OS: Windows 11
• Browser: Firefox Developer
• Version: latest

[jonathanmuth]

I have been experiencing the same performance issues described here. We recently migrated a Wordpress blog that was making extensive use of Wordpress Editor blocks, many of them grouped/nested for layout purposes.

While we were able to simplify the blocks structure in a few places, there are still a few posts left that make use of 20 or more blocks that allow nesting of other blocks/layouts. Saving one of these posts takes around 30 seconds.

This, admittedly, might be an edge case. It would still be nice to see performance improvements in this area or some information in the documentation about the performance degradation one might experiences when "unorthodoxically" nesting blocks.

On a another note: I am super impressed by Kirby's ability to handle the complex structure of the content we migrated so well. A true testament to its power and flexibility. 💖

[seehat]

Same for me. It got even slower after the Page Preview Feature was introduced In Kirby 5. The request to save the working changes in the background takes now longer too.

Are there any news on this?

[bastianallgeier]

We are currently working on a solution #7658

[bastianallgeier]

The improvements are now on develop-minor and will be in 5.2. There will probably still be problems with very complex Blocks fields, but we are getting a lot better.

[mynameisfreedom]

That's fantastic news! 🚀🚀🚀