There are two default types of appender buttons and those two are them. Either you inserted some block like columns which uses this appender in second case, but you are not aware of it, or you have some software like plugin or theme which tweaks appender button.
It is the post’s content which has blocks, and these blocks have attributes. Internally, these are stored as some fancy HTML comments. To get the rendered HTML, you can use the function get_the_content() and pass it through the filter the_content. I.e., replace function render_latest_post( $attributes ) { //not sure how to use this function $para … Read more
Add default block css when the block has been added with php?
Custom Gutenberg block problem – This block has encountered an error and cannot be previewed
Block development: how to bump version on generated css files?
When using the MediaPlaceholder component, will skipping blobUrl handling break something?
You did not add show in rest argument, set to true in post registration. Everything must be REST-enabled, since REST is the way block editor communicates with the rest 🙂 of WordPress
You can’t do that with PHP. You must use Javascript-React to alter/enhance block editor behaviour. You’ll have to use subscribe function, for subscribing to actions, catch isSavingPost action there (there is also isAutoSavingPost for autosaves) and dispatch a Notice in the editor with appropriate action. Familiarity with React and Redux would be of great help.
In block themes patterns won’t have access to context such as id it seems: https://developer.wordpress.org/block-editor/reference-guides/block-api/block-patterns One has to create a custom block to get post id and use useSelect hook to get post Id like so: import { useSelect } from “@wordpress/data”; … inside Edit block function: const postId = useSelect(select => select(‘core/editor’).getCurrentPostId()); then, postId … Read more
Your code uses very old way of saving data to meta. This (using meta property in attributes) is not recommended anymore. Instead, use useEntityProp hook to save data to meta (example in handbook). In your case, you’ll have to construct array from image metadata, where data of each image may be array or object and … Read more