Gutenberg add a custom metabox to default blocks
Using filters we can modify the props and attributes of blocks. First we extend the attributes to include the new attribute: const { addFilter } = wp.hooks; // Register/add the new attribute. const addExtraAttribute = props => { const attributes = { …props.attributes, extra_attribute: { type: “string”, default: “default_value” } }; return { …props, attributes … Read more