Download E-books Building Hypermedia APIs with HTML5 and Node PDF

With this concise publication, you’ll examine the paintings of establishing hypermedia APIs that don’t easily run on the net, yet that really exist in the internet. You’ll begin with the final ideas and applied sciences at the back of this architectural technique, after which dive hands-on into 3 fully-functional API examples.

Too many APIs depend upon innovations rooted in laptop and native sector community styles that don’t scale well—costly recommendations which are tough to take care of over the years. This publication indicates method architects and internet builders the way to layout and enforce human- and machine-readable net prone that stay solid and versatile as they scale.

  • Learn the H-Factors for representing software metadata throughout all media varieties and formats
  • Understand the 4 simple layout components for authoring hypermedia types
  • Convert an easy read-only XML-based media style right into a winning API design
  • Examine the demanding situations and merits of designing a hypermedia style with JSON
  • Use HTML5’s wealthy set of hypermedia controls within the API layout process
  • Learn the main points of documenting, publishing, and registering media kind designs and link-relation types

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observe that the one person template will optionally contain the user’s profile snapshot (userimage), description, and site URL in the event that they were provided. you have to additionally realize one hundred twenty | bankruptcy 4: HTML5 Hypermedia that this illustration incorporates a hyperlink to work out the entire messages created by means of this consumer (rel="messages”). The server code and look at template for that reaction are: /* person messages web page */ app. get('/microblog/user-messages/:i', function(req, res){ var view, strategies, identity; identity = req. params. i; view = '/_design/microblog/_view/posts_by_user'; concepts = {}; concepts. descending='true'; ideas. key=String. fromCharCode(34)+id+String. fromCharCode(34);; db. get(view, recommendations, function(err, document) { res. header('content-type',contentType); res. render('user-messages', { name: identity, web site: baseUrl, goods: document }); }); });

Messages from <%=title%>

 

The Server Code | 121 Figure 4-1. Microblog simple POSH purchaser Screenshot the buyer Code as soon as the server is carried out, it’s time to paintings via instance consumers. As used to be already pointed out, utilizing HTML5 because the established media style implies that the implementation will simply run inside universal net browsers with none amendment. even though, simple HTML5 (without a Cascading kind Sheet, or CSS) isn't very unique to the attention. it's a quite effortless strategy to create a CSS stylesheet to spiff up simple HTML5 right into a respectable taking a look buyer. This ends up in a shopper that helps the entire required performance with out counting on any client-side scripting. this can be also known as a undeniable previous Semantic HTML or POSH buyer. it's also attainable to regard well-formed HTML5 as an XML rfile and render the responses utilizing an Ajax-style person interface. This does, although, require that the HTML5 be rendered as legitimate XML. fortunate for our case, the view templates already meet this requirement. the luxury instance the elemental HTML5 that's rendered by way of the server is totally sensible, yet a section unappealing to view as will be obvious in determine 4-1. despite the fact that, with just a little of CSS paintings, this view should be become a way more inviting person interface (see determine 4-2). 122 | bankruptcy 4: HTML5 Hypermedia Figure 4-2. Microblog CSS POSH shopper Screenshot The CSS dossier for this rendering contains principles for rendering the house web page and message lists: physique { background-color: #FFFFCC; font-family: sans-serif; } div#queries { width:500px; float:right; } div#queries ul { margin:0; list-style-type:none; } div#queries ul li { float:left; padding-right: .

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