WP Gutenberg block, setState не вызывается

Question

Проблема в том, что setState внутри моего class ShowPosts getPosts() не вызывается, и я не могу понять, почему. class SelectedPost getOptions() работает, и это в основном тот же код.

Я уже делал несколько небольших проектов React, но это моя первая попытка создать блок в WP Gutenberg.

const { __ } = wp.i18n;
const { registerBlockType } = wp.blocks;
const { InspectorControls } = wp.editor;
const { SelectControl } = wp.components;
const { Component } = wp.element;

registerBlockType( 'pluginName/news', {
    title: __('Show latest news'),
    icon: 'tagcloud',
    category: 'pluginCategory',
    attributes: {
        content: {
          type: 'array',
          source: 'children',
          selector: 'p',
        },
        title: {
          type: 'string',
          selector: 'h2'
        },
        link: {
          type: 'string',
          selector: 'a'
        },
        selectedPost: {
          type: 'number',
          default: 0,
        },
    },

    edit: SelectedPost,
    save: ShowPosts
});

class SelectedPost extends Component {

    static getInitialState (selectedPost) {
        return {
            posts: [],
            selectedPost: selectedPost,
            post: {}
        };
    }

    constructor () {
        super(...arguments);
        this.state = this.constructor.getInitialState(this.props.attributes.selectedPost);

        this.getOptions = this.getOptions.bind(this);
        this.onChangeSelectPost = this.onChangeSelectPost.bind(this);

        this.getOptions();
    }

    getOptions () {
        wp.api.loadPromise.done(() => {
            return (new wp.api.collections.Posts()).fetch().then((posts) => {
                if (this.state.selectedPost !== 0) {
                    const post = posts.find((item) => {
                        return item.id == this.state.selectedPost
                    });

                    this.setState({ post, posts });
                } else {
                    this.setState({ posts });
                }
            });
        });
    }

    onChangeSelectPost (value) {
        const post = this.state.posts.find((item) => {
            return item.id == parseInt(value)
        });

        this.setState({ selectedPost: parseInt(value), post });

        this.props.setAttributes({
            selectedPost: parseInt(value)
        });
    }

    render () {
        let options = [ { value: 0, label: __('Select a news item') } ],
            title   = __('Displays latest news');

        this.props.className += ' loading';

        if (this.state.posts.length > 0) {
            const loading = __('We have ' + this.state.posts.length + ' news items. %c');

            if (this.state.post.title !== undefined) {
                output = loading.replace('%c', '<a href="' + this.state.post.link + '">' + this.state.post.title.rendered + '</a> is being focused.');
            } else {
                output = loading.replace('%c', 'None is chosen.');
            }

            this.state.posts.forEach((post) => {
                options.push({ value: post.id, label: post.title.rendered });
            });
        } else {
            output = __('No news found. Please create some first.');
        }

        return [
            <InspectorControls>
                <div>
                    <h2>{ title }</h2>
                    <SelectControl onChange={ this.onChangeSelectPost } value={ this.props.attributes.selectedPost } label={ __('Select a news item to focus, leave empty to focus latest.') } options={ options } />
                </div>
            </InspectorControls>
            ,
            <div dangerouslySetInnerHTML={ { __html: output } }></div>
        ]
    }
}

class ShowPosts extends Component {

    static getInitialState (selectedPost) {
        return {
            posts: [],
            selectedPost: selectedPost,
            post: {}
        };
    }

    constructor () {
        super(...arguments);
        this.state = this.constructor.getInitialState(this.props.attributes.selectedPost);

        this.getPosts = this.getPosts.bind(this);

        this.getPosts();
    }

    getPosts () {
        wp.api.loadPromise.done(() => {
            return (new wp.api.collections.Posts()).fetch().then((posts) => {
                this.setState({ posts }, () => console.log('Not called'));
            });
        });
    }

    pushedPost () {
        return (
            <div className="news-item">
                <h2 dangerouslySetInnerHTML={{ __html: this.state.selectedPost.attributes.title}}></h2>
                <div dangerouslySetInnerHTML={{ __html: this.state.selectedPost.attributes.content}}></div>
            </div>
        );
    }

    showPosts () {
        const postItems = this.state.posts.forEach((post) => {
            return <h2>{ post.rendered }</h2>
        });

        return postItems;
    }

    render () {
        return (
            <div className={ this.props.className }>
            { this.showPosts() }
            </div>
        );
    }
}