Overview: Block-based Demo Theme

[epiqueras]

Since #18554, we've had a way of shipping demo block templates for the full site editing experiment in the Gutenberg plugin. It'd be nice if we shipped a block-based version of TwentyTwenty in there, that we could then package into a standalone theme as an example implementation for block based themes. It will also be very nice to work with in the new site editor.

Let's keep track of needed work here:

• Index/archive template. (PR)
  • They are shared so I guess the archive block will just not output anything if get_the_archive_title is not set.
  • Header template part. (PR)
    • Site description block. (PR)
  • Archive block. (PR)
    • Should wrap posts block.
  • Posts block with pagination. (PR)
    • Receives context from query or parent block, e.g. archive block.
  • Footer template part with widget replacements. (PR)
• Singular template. (PR)
  • Comments block. (PR)
• 404 template. (PR)

[dashkevych]

Are we allowed to add custom CSS classes to the blocks in these templates (for example, if the theme has decided to use utility-first CSS framework) ?

If we are allowed to use custom CSS classes in the templates, how the template updates will work if the template will be saved as CPT after the user's changes (https://youtu.be/__VN9VNtT0E).

[epiqueras]

Yes, the classes will also save in the created CPT post.

These templates are just the editor's serialized output. You could also use block style variations.

[mtias]

We are no longer bundling a demo theme.