How to "manually" (programmatically) insert a block in Gutenberg?

Question

Gutenberg's API is quiet obscure and I can't figure how to create and append a block to a post.

I've found the wp.blocks.createBlock('core/paragraph', {content: "blabla"}); which returns a pretty block object, but does not append any content to the post.

I would like to insert a simple paragraph with some custom content just by clicking a button.

Answer 1

var content = "Test content";
var el = wp.element.createElement;
var name = 'core/paragraph';
// var name = 'core/html';
insertedBlock = wp.blocks.createBlock(name, {
    content: content,
});
wp.data.dispatch('core/editor').insertBlocks(insertedBlock);

Answer 2

Maybe this source code can help https://github.com/WordPress/gutenberg/blob/master/editor/components/inserter/index.js

Look at the end of the file for the part

onInsertBlock: ( item ) => {
        const { insertionPoint, selectedBlock } = ownProps;
        const { index, rootUID, layout } = insertionPoint;
        const { name, initialAttributes } = item;
        const insertedBlock = createBlock( name, { ...initialAttributes, layout } );
        if ( selectedBlock && isUnmodifiedDefaultBlock( selectedBlock ) ) {
            return dispatch( 'core/editor' ).replaceBlocks( selectedBlock.uid, insertedBlock );
        }
        return dispatch( 'core/editor' ).insertBlock( insertedBlock, index, rootUID );
    },

To be more specific

return dispatch( 'core/editor' ).insertBlock( insertedBlock, index, rootUID );

Hope helps figuring out your problem, since it´s doing the same thing you want to achieve