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WordCamp Montreal 2016 WP-API + React with server rendering
- 1. WP-API + React with server rendering + =
- 2. Developer and teacher Co-founder of DecodeMTL Where to find me; github.com/ziad-saab @ZiadDotHTML decodemtl.com Hello! I am Ziad Saab
- 3. WARNING This presentation is full of cats and code. #WordCatMTL
- 4. lides and source code Slides French: ziad.cc/wcmtl-2016-fr.html English: ziad.cc/wcmtl-2016-en.html Source c ode github.com/ziad-saab/decodemtl-wp-frontend github.com/nyanofthemoon/decodemtl-wp-theme github.com/nyanofthemoon/recursive-acf-to-wp-rest-api github.com/nyanofthemoon/decodemtl-api
- 5. eam Paule Lepage Backend + Proxy API Lucas Lemonnier Design + SASS Ziad Saab Frontend
- 6. tructure of the talk 1.WordPress and the REST API 2.Overview of WP-API + React stack 3.Lessons learned: a.Metadata and technical SEO b.Async data loading c.How to manage i18n? 4.Conclusions
- 7. iny timeline ▷ Founded DecodeMTL in 2014 ▷ Static website — HTML, CSS, JS ▷ Jekyll generates the site’s pages ▷ Yay! No backend! ▷ Mid-2015: need new site ▷ More dynamic and content-based ▷ Content ⇒ CMS ⇒ WordPress ▷ Dynamic ⇒ AJAX/SPA ⇒ React
- 8. Inconvenients ▷ The theme is attached to backend ▷ Monolithic structure ▷ “The Loop” ▷ Have to use PHP for frontend ordPress... Advantages ▷ Free and open-source CMS ▷ Community and plugins ▷ Familiar/popular admin tool ▷ Custom post types ▷ Custom fields with ACF ▷ Languages management with Polylang or WPML
- 9. ow to keep only the advantages? { "author": 1, "comment_status": "open", "content": { "rendered": "<p>Hello World!</p>n" }, "date": "2016-06-29T13:53:49", "date_gmt": "2016-06-29T13:53:49", "excerpt": { "rendered": "<p>Hello World!</p>n" }, "featured_media": 0, "format": "standard", "id": 29, "link": "http://decodemtl.com/...", "modified": "2016-06-29T13:53:49", "ping_status": "open", "slug": "hello-world", "slug_en": "hello-world", "slug_fr": "bonjour-monde", "tags": [], "title": { "rendered": "First Post" }, "type": "post" }
- 10. { "author": 1, "comment_status": "open", "content": { "rendered": "<p>Hello World!</p>n" }, "date": "2016-06-29T13:53:49", "date_gmt": "2016-06-29T13:53:49", "excerpt": { "rendered": "<p>Hello World!</p>n" }, "featured_media": 0, "format": "standard", "id": 29, "link": "http://decodemtl.com/...", "modified": "2016-06-29T13:53:49", "ping_status": "open", "slug": "hello-world", "slug_en": "hello-world", "slug_fr": "bonjour-monde", "tags": [], "title": { "rendered": "First Post" }, "type": "post" } I SHOULD BUY A WP-API... ow to keep only the advantages?
- 11. rchitecture WP-API + React Backend/ Data Template API Proxy
- 12. <!doctype html> <html> <head> <meta charset="utf-8"> <title>SUPERBlog!</title> </head> <body> <div id="app"> <!-- i can haz content? --> </div> <script src="app.js"></script> </body> </html> erver rendering: sans
- 13. erver rendering 101 GET /fr/cours/html-css HTTP/1.1 User-Agent: firefox Accept-Language: fr, en;q=0.7 ... ExpressJS server with /* route URL passed to react-router which returns tree of components Tree of components passed to redux-connect which uses Promise to wait for all data to be loaded Page data is loaded to a global store with the help of redux. react-dom/server renders the tree of components and react- redux injects store data as props HTTP/1.1 200 OK Date: Wed, 20 Jan 2038 16:19:42 GMT Content-Type: text/html Content-Length: … <!doctype html> <html> <head> <title><!--react-helmet title--></title> <!--meta tags I CAN HAZ SEOS??--> </head> <body> <div id=”app”><!-- react-dom --></div> <script src=”app.js”></script> <script><!--window.REDUX_STATE--></script> </body> </html>
- 14. Partagé 850+ Server 100 Client 50 Ines of code I LIKE MATH... IT MAKES PEOPLE CRY.
- 15. etadata and technical SEO react-helmet manages the <head>
- 16. <Helmet defaultTitle="DecodeMTL" titleTemplate="%s | DecodeMTL" meta={[ {charset: 'utf-8'}, {property: 'og:site_name', content: '...'}, ... ]} /> <Helmet title={this.props.post.title} /> etadata and technical SEO - front
- 17. const head = Helmet.rewind(); const title = head.title.toString(); // <title>Web Dev | DecodeMTL</title> const meta = head.meta.toString(); // <meta charset="utf-8"><meta ...> ... etadata and technical SEO - back
- 18. polylang manages posts and CPT translation in WordPress react-intl manages string translation in the templates nternationalization
- 19. nternationalization - WordPress function decodemtl_polylang_slugs($post) { $language = $polylang->model->get_post_language($post->ID); $current = $language->slug; $currentSlug = $post->post_name; $oppositeSlug = ''; $opposite = ('en' === $current) ? 'fr' : 'en'; $oppositePostId = pll_get_post($post->ID, $opposite); if ($oppositePostId) { $oppositePost = get_post($oppositePostId); $oppositeSlug = $oppositePost->post_name; } return array( 'slug_' . $current => $currentSlug, 'slug_' . $opposite => $oppositeSlug ); }
- 20. nternationalization - <head> <link rel="alternate" hreflang="fr" href="https://..."> PARLEZ-VOUS FRANÇAIS?
- 21. nternationalization - routes React <Route path="/" component={App}> <Route path="fr" onEnter={() => dispatch(switchLang('fr'))}> <IndexRoute component={Home}/> <Route path="blogue" component={Blog} /> <Route path="blogue/:slug" component={BlogPost} /> <Route path="cours" component={Courses} /> <Route path="cours/:slug" component={CoursePage} /> <Route path=":slug" component={SinglePage} /> </Route> <Route onEnter={() =>dispatch(switchLang('en'))}> <IndexRoute component={Home}/> <Route path="blog" component={Blog} /> <Route path="blog/:slug" component={BlogPost} /> <Route path="courses" component={Courses} /> <Route path="courses/:slug" component={CoursePage} /> <Route path=":slug" component={SinglePage} /> </Route> </Route>
- 23. nternationalisation - translation module.exports = { "homePage.title": "Bienvenue à DecodeMTL", "homePage.courses": "Nos cours", "coursePage.instructor": "Votre instructeur", "coursePage.schedule": "Horaire du cours", "coursePage.sessions": "Prochaines sessions", "loadingBox.text": "Chargement...", "notFoundPage.title": "404 Non Trouvé!", ... };
- 24. TTP and AJAX isomorphic-fetch manages AJAX in front and HTTP requests in back
- 25. TTP and AJAX fetch('/wp-json/wp/v2/posts') .then( function(res) { return res.json(); } ) .then(...)
- 26. TTP and AJAX redux-connect manages the data fetching synchronization
- 27. TTP and AJAX - front @asyncConnect([ { deferred: true, promise: function(opt) { var slug = opt.params.slug; return opt.store.dispatch(loadCourse(slug)); } } ]) class BlogPost extends React.Component { render() {...} }
- 28. TTP and AJAX - back app.get('/*', (req, res) => { const memHistory = createHistory(req.url); const store = makeStore(memHistory); const routes = require('./routes'); const options = {history: memHistory, routes: routes, location: req.url}; match(options, function(err, redirectLocation, renderProps) { if (redirectLocation) { res.redirect(redirectLocation.pathname + redirectLocation.search); } else if (renderProps) { loadOnServer({...renderProps, store}) .then(function() { const html = ReactDOM.renderToString( <Provider store={store} key="provider"> <ReduxAsyncConnect {...renderProps} /> </Provider> ); const head = Helmet.rewind(); const title = head.title.toString(); const meta = head.meta.toString(); const link = head.link.toString(); const finalState = store.getState(); res.render('index', {html, title, meta, link, finalState}); }); } }); });
- 29. emo?
- 30. onclusions ▷ Using React for a WordPress theme gives you the advantages of SPA but also its inconvenients ▷ Server rendering negates some inconvenients like the lack of content and slow loading times ▷ Server rendering doesn’t require more work if we add more pages/features — scalable ▷ This method is a bit overkill for a simple blog. A small ExpressJS app would suffice if you want to stay in JS.