Pattern Overrides in WP 7.0: Support for Custom Blocks

As of WordPress 7.0, any blockBlock Block is the abstract term used to describe units of markup that, composed together, form the content or layout of a webpage using the WordPress editor. The idea combines concepts of what in the past may have achieved with shortcodes, custom HTML, and embed discovery into a single consistent API and user experience. attribute that supports Block Bindings also supports Pattern Overrides. So now, you can use Pattern Overrides for any block you want — even custom blocks — the previous limit to a hardcoded set of CoreCore Core is the set of software required to run WordPress. The Core Development Team builds WordPress. blocks no longer holds you back. To get started, opt in through the server-side block_bindings_supported_attributes filter(s).

The underlying Block Bindings mechanism will make sure that:

• In dynamic blocks, the correct, bound attribute values will be passed to render_callback().
• In static blocks, the HTMLHTML HyperText Markup Language. The semantic scripting language primarily used for outputting content in web browsers. APIAPI An API or Application Programming Interface is a software intermediary that allows programs to interact with each other and share data in limited, clearly defined ways. is used to locate attributes sourced from html, rich-text, or attribute sources via their selectors in the persisted markup, replacing their values with the respective bound attribute values.

Bound attribute values should appear correctly in the rendered blocks’ markup in these cases. You shouldn’t need any other modifications.

For static blocks with unsourced attributes, or with sourced attributes whose selectors are more complex than the HTML API currently understands, you might need to add a render_callback() or a render_block filterFilter Filters are one of the two types of Hooks https://codex.wordpress.org/Plugin_API/Hooks. They provide a way for functions to modify data of other functions. They are the counterpart to Actions. Unlike Actions, filters are meant to work in an isolated manner, and should never have side effects such as affecting global variables and output. to make sure bound attribute values are correctly handled. It’s best if you first try without (i.e. by only adding the attribute via block_bindings_supported_attributes filter). Then, if the bound attribute value doesn’t render, add the callback or the filter that guarantees the render.

Props to @fabiankaegy and @marybaum for reviewing this dev notedev note Each important change in WordPress Core is documented in a developers note, (usually called dev note). Good dev notes generally include a description of the change, the decision that led to this change, and a description of how developers are supposed to work with that change. Dev notes are published on Make/Core blog during the beta phase of WordPress release cycle. Publishing dev notes is particularly important when plugin/theme authors and WordPress developers need to be aware of those changes.In general, all dev notes are compiled into a Field Guide at the beginning of the release candidate phase.!

#7-0, #dev-notes, #dev-notes-7-0