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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>MERN - Documentation</title>
<!-- Semantic META -->
<meta name="keywords" content="Reactjs, Nodejs, mongoDB, express, mern stack, mean, react">
<meta name="description" content="Documentation for MERN - a React framework for fullstack javascript web applications.">
<!-- Bootstrap Core CSS -->
<link href="css/bootstrap.min.css" rel="stylesheet">
<link href="css/font-awesome-4.5.0/css/font-awesome.min.css" rel="stylesheet">
<link href="css/doc.css" rel="stylesheet">
<!-- favicon -->
<link rel="apple-touch-icon" sizes="57x57" href="./images/apple-icon-57x57.png">
<link rel="apple-touch-icon" sizes="60x60" href="./images/apple-icon-60x60.png">
<link rel="apple-touch-icon" sizes="72x72" href="./images/apple-icon-72x72.png">
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<link rel="apple-touch-icon" sizes="120x120" href="./images/apple-icon-120x120.png">
<link rel="apple-touch-icon" sizes="144x144" href="./images/apple-icon-144x144.png">
<link rel="apple-touch-icon" sizes="152x152" href="./images/apple-icon-152x152.png">
<link rel="apple-touch-icon" sizes="180x180" href="./images/apple-icon-180x180.png">
<link rel="icon" type="image/png" sizes="192x192" href="./images/android-icon-192x192.png">
<link rel="icon" type="image/png" sizes="32x32" href="./images/favicon-32x32.png">
<link rel="icon" type="image/png" sizes="96x96" href="./images/favicon-96x96.png">
<link rel="icon" type="image/png" sizes="16x16" href="./images/favicon-16x16.png">
<link rel="manifest" href="./images/manifest.json">
<meta name="msapplication-TileColor" content="#ffffff">
<meta name="msapplication-TileImage" content="./images/ms-icon-144x144.png">
<meta name="theme-color" content="#ffffff">
<!-- Custom CSS -->
<style>
body {
padding-top: 70px;
/* Required padding for .navbar-fixed-top. Remove if using .navbar-static-top. Change if height of navigation changes. */
}
</style>
<!-- HTML5 Shim and Respond.js IE8 support of HTML5 elements and media queries -->
<!-- WARNING: Respond.js doesn't work if you view the page via file:// -->
<!--[if lt IE 9]>
<script src="https://oss.maxcdn.com/libs/html5shiv/3.7.0/html5shiv.js"></script>
<script src="https://oss.maxcdn.com/libs/respond.js/1.4.2/respond.min.js"></script>
<![endif]-->
</head>
<body>
<!-- Navigation -->
<nav class="navbar navbar-inverse navbar-fixed-top" role="navigation">
<div class="container">
<!-- Brand and toggle get grouped for better mobile display -->
<div class="navbar-header">
<button type="button" class="navbar-toggle" data-toggle="collapse" data-target="#bs-example-navbar-collapse-1">
<span class="sr-only">Toggle navigation</span>
<span class="icon-bar"></span>
<span class="icon-bar"></span>
<span class="icon-bar"></span>
</button>
<a class="navbar-brand" href="./home.html"><img className="brand_logo" src="./images/mern.png"/> <span>A React framework</span></a>
</div>
<!-- Collect the nav links, forms, and other content for toggling -->
<div class="collapse navbar-collapse" id="bs-example-navbar-collapse-1">
<ul class="nav navbar-nav pull-right">
<li>
<a href="https://github.com/tech-dojo/mern" target="_blank"><i class="fa fa-github-square menuIcon"></i></a>
</li>
<li>
<a href="https://twitter.com/dojo_tech" target="_blank"><i class="fa fa-twitter-square menuIcon"></i></a>
</li>
</ul>
</div>
<!-- /.navbar-collapse -->
</div>
<!-- /.container -->
</nav>
<!-- Page Content -->
<div class="container-fluid marginBottom">
<div class="row">
<div class="col-lg-3 col-md-4 col-sm-5 col-xs-12">
<nav>
<ul class="nav nav-pills nav-stacked menuCss">
<li>
<a href="#gettingStarted">Getting Started</a>
</li>
<li>
<a href="#folderStructure">Folder Structure</a>
</li>
<li>
<a href="#utf">Understanding the Framework</a>
<ul class="subSection">
<ul>
<a href="#clientSideArticle">Client Side (Article)</a>
</ul>
<ul>
<a href="#serverSideArticle">Server Side (Article)</a>
</ul>
<ul>
<a href="#clientSideSignUp">Client Side (Sign Up)</a>
</ul>
<ul>
<a href="#serverSideSignUp">Server Side (Sign Up)</a>
</ul>
</ul>
</li>
<li>
<a href="#testCode">Test Code</a>
<ul class="subSection">
<ul>
<a href="#testCode">Server Side</a>
</ul>
<ul>
<a href="#clientSidetestCode">Client Side</a>
</ul>
<ul>
<a href="#testCoverage">Coverage</a>
</ul>
</ul>
</li>
<li>
<a href="#config">Configuration</a>
</li>
<li>
<a href="#isomorphic">Isomorphic</a>
</li>
<li>
<a href="#yoman">MERN Generator</a>
</li>
<li>
<a href="#contributing">Contribution</a>
</li>
</ul>
</nav>
</div>
<span id="gettingStarted"></span>
<div class="col-lg-9 col-md-8 col-sm-7 col-xs-12">
<div>
<h1>Getting Started</h1>
<hr>
<p>
The React Framework is designed to be as natural as possible for a web developer to build a great web
application, focusing on using the standard HTML, CSS, and Javascript.
</p>
<h2>Prerequisites</h2>
<p>To start working with the React Framework, the following prerequisites should be installed.</p>
<h4><b>Node.js & npm Install</b></h4>
<div>
<ul class="shellCommands">
<li> $ sudo apt-get install curl </li>
<li>$ curl -sL https://deb.nodesource.com/setup | sudo bash - </li>
<li>$ sudo apt-get install -y nodejs </li>
<li>$ sudo apt-get install -y build-essential (Recommended for Linux) </li>
<li>$ npm install -g gulp </li>
<li>$ npm install --save gulp</li>
</ul>
</div>
<h4><b>MongoDB Install</b></h4>
<div>
<ul class="shellCommands">
<li>$ sudo apt-key adv --keyserver hkp://keyserver.ubuntu.com:80 --recv 7F0CEB10</li>
<li>$ echo "deb http://repo.mongodb.org/apt/ubuntu</li>
<li>$(lsb_release -sc)"/mongodb-org/3.0 multiverse" | sudo tee /etc/apt/sources.list.d/mongodb-org-3.0.list</li>
<li>$ sudo apt-get update</li>
<li>$ sudo apt-get install -y mongodb-org</li>
</ul>
</div>
<h4><b>Git Install/Clone</b></h4>
<div>
<ul class="shellCommands">
<li>$ apt-get update</li>
<li>$ apt-get install git</li>
<li>$ git clone https://github.com/<i>(Clone ReactFramework)</i></li>
</ul>
</div>
<h4><b>After cloning the project from github to run the app</b></h4>
<div>
<p><span class="l-sub-section">Make sure <b>mongodb</b> is running, to run <b>mongodb</b>,</span></p>
<ul class="shellCommands">
<li>$ mongod</li>
</ul>
<p><span class="l-sub-section">Install global dependencies with,</span></p>
<ul class="shellCommands" >
<li>$ npm install -g gulp bower react-tools browserify</li>
</ul>
<p><span class="l-sub-section">Install dependencies with,</span></p>
<ul class="shellCommands">
<li>$ npm install</li>
</ul>
<p><span class="l-sub-section">Run app with,</span></p>
<ul class="shellCommands">
<li id="folderStructure">$ gulp serve</li>
</ul>
</div >
</div><br/>
<div>
<h1>Folder Structure</h1>
<hr>
<p>The basic structure for this project is quite simple:</p>
<p class="shellCommands">
|-.tmp
|-app
|------Components
|------------articles
|------------core
|------------users
|------------App.jsx
|------images
|------services
|------------Authentication.js
|------stores
|------------ArticleStore.jsx
|------------RestAPI_Helper.js
|------------UserStore.jsx
|-server
|------controllers
|------models
|------routes
|------strategies
|------express.js
|------passport.js
|------seeds.js
|------server.js
|-tests
|------componentTest
|------article.server.model.test.js
|------article.server.routes.test.js
|------user.server.model.test.js
|-.gitignore
|-gulpfile.js
|-package.json
</p>
<h2>App</h2>
<p>Front-end folders and files are stored here.</p>
<h4><span class="folderName-title">Components</span></h4>
<p>The components folder contain React JS application components, to learn more about it visit the <a target="blank" href="https://facebook.github.io/react/docs/component-api.html">React JS components section</a>.</p>
<h4><span class="folderName-title">Services</span></h4>
<p>All the services are stored here and it can be used in multiple componets.</p>
<h4><span class="folderName-title">Stores</span></h4>
<p>Stores contain the application state and logic. The apps' stores are stored in this folder, to learn more about store, see <a target="blank" href="https://facebook.github.io/flux/docs/overview.html#stores">Flux Architecture</a>.</p>
<span class="fileName-title">Index.ejs</span>
<p>The react app gets mounted using,
<!-- HTML generated using hilite.me --><div class="common-margin-bottom" style="background: #ffffff; overflow:auto;width:auto;border:solid gray;border-width:.1em .1em .1em .8em;padding:.2em .6em;"><pre style="margin: 0; line-height: 125%"><span style="color: #007700"><div</span> <span style="color: #0000CC">id=</span><span>"mount"</span><span style="color: #007700">></span>
<span style="color: #007700"></div></span>
</pre></div>
</p>
<span class="fileName-title ">Main.jsx</span>
<p><span class="codeInsidePgrph">ReactDom</span> mounts the app component using,
<!-- HTML generated using hilite.me --><div style="background: #ffffff; overflow:auto;width:auto;border:solid gray;border-width:.1em .1em .1em .8em;padding:.2em .6em;"><pre style="margin: 0; line-height: 125%">ReactDom.render(<span style="color: #333333"><</span>App<span style="color: #333333">/></span>,<span style="color: #007020">document</span>.getElementById(<span>'mount'</span>));
</pre></div>
</p>
<h2>Server</h2>
<p>Server folder contains the server files used in the application.</p>
<h4><span class="folderName-title">Controllers</span></h4>
<p>The controllers folder contain Express application controllers which deals with backend business logic.</p>
<h4><span class="folderName-title">Models</span></h4>
<p>The models folder contain Mongoose models.</p>
<h4><span class="folderName-title">Routes<span></h4>
<p>The routes folder contains the Server routing configuration files. The Express routes are defined here. </p>
<h4><span class="folderName-title">Strategies</span></h4>
<p>The <b>strategies</b> folder contains the strategies configuration files loaded by the <b>passport.js</b> file.</p>
<span class="fileName-title ">Express.js</span>
<p>Express configuration file, it initializes & configures the Express application.</p>
<span class="fileName-title ">Passport.js</span>
<p>Passport configuration file that initializes & configures the Passport's authentication strategies and middlewares from the <b>strategies</b> folder.</p>
<span class="fileName-title ">Seeds.js</span>
<p>Seeds contain the pre-loaded data.</p>
<span class="fileName-title ">Server.js</span>
<p>Node.js application is initialized here.</p>
<h2>Application Files</h2>
<p>Few application files are stored in the root folder.</p>
<span class="fileName-title ">gulpfile.js</span>
<p>Gulp is a default JavaScript task runner.</p>
<h2>.tmp</h2>
<p id="utf">This folder stores the raw javascript code in <span class="codeInsidePgrph">app.js</span> for the browser.
Using browserify all the jsx files are compiled to <span class="codeInsidePgrph">app.js</span>.</p>
</div><br/>
<div>
<h1>Understanding the Framework</h1>
<hr>
<h2>Data Flow Model</h2>
<img class="common-margin-bottom" style="max-width: 100%;" src="images/image00.png"/>
<div>
<p>The application architecture used on the client-side for data flow between the React components and the
backend is a stripped down version inspired by Facebook’s Flux architecture, and has two main parts
- <b>stores</b> and <b>views.</b>
</p>
<p>Let’s discuss the data flow in Article list view component from the framework.</p>
<p><span class="l-sub-section">In order to access the Article list component, the user first needs to go to the url "/articles" from the <span class="codeInsidePgrph">app.jsx</span> file.</span></p>
<!-- HTML generated using hilite.me --><div style="background: #ffffff; overflow:auto;width:auto;border:solid gray;border-width:.1em .1em .1em .8em;padding:.2em .6em;"><table><tr><td><pre style="margin: 0; line-height: 125%">1
2
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8</pre></td><td><pre style="margin: 0; line-height: 125%"><span style="color: #007700"><Router</span> <span style="color: #0000CC">history=</span><span>{history}</span><span style="color: #007700">></span>
<span style="color: #007700"><Route</span> <span style="color: #0000CC">path=</span><span>"/"</span> <span style="color: #0000CC">component=</span><span>{Template}</span><span style="color: #007700">></span>
<span style="color: #007700"><IndexRoute</span> <span style="color: #0000CC">component=</span><span>{Home}/</span><span style="color: #007700">></span>
..............
<span style="color: #007700"><Route</span> <span style="color: #0000CC">path=</span><span>"/articles"</span> <span style="color: #0000CC">component=</span><span>{ListArticles}/</span><span style="color: #007700">></span>
..............
<span style="color: #007700"></Route></span>
<span style="color: #007700"></Router></span>
</pre></td></tr></table></div>
<p class="l-sub-section">As soon as the Article list view component is initialized, <span class="codeInsidePgrph">ArticleStore.fetchArticleList()</span> function is called.
</p>
<!-- HTML generated using hilite.me --><div style="background: #ffffff; overflow:auto;width:auto;background-color: #f5f5f5; border:1px solid #ccc;border-width:.1em .1em .1em .8em;padding:.2em .6em;"><table><tr><td><pre style="margin: 0; line-height: 125%"> 1
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10</pre></td><td><pre style="margin: 0; line-height: 125%"><span style="color: #008800; font-weight: bold">class</span> ArticleList <span style="color: #008800; font-weight: bold">extends</span> React.Component {
constructor(props, context){
...
ArticleStore.fetchArticleList();
...
}
...
}
<b>FIG</b><span style="color: #333333">:</span> Article List Component
</pre></td></tr></table></div>
<p class="l-sub-section">The <span class="codeInsidePgrph">fetchArticleList()</span> in the <b>ArticleStore.jsx</b> makes an ajax <b>GET</b> call in order to get the data from
the database using the appropriate <b>API</b> call.
</p>
<p>
<b>
So when this article list data returns successfully, how is this data rendered in the article list view?
</b>
</p>
<!-- HTML generated using hilite.me --><div style="background: #ffffff; overflow:auto;width:auto; background-color: #f5f5f5; border:1px solid #ccc;border-width:.1em .1em .1em .8em;padding:.2em .6em;"><table><tr><td><pre style="margin: 0; line-height: 125%">1
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_onChange() {
<span style="color: #008800; font-weight: bold">this</span>.setState(getArticleList());
}
<b>FIG</b><span style="color: #333333">:</span> onChange function in view
</pre></td></tr></table></div>
<p class="l-sub-section">
The <span class="codeInsidePgrph">_onChange(){...}</span> function in the ListArticles component is registered in the store
as a callback function to be called when the data is available.
</p>
<!-- HTML generated using hilite.me --><div style="background: #ffffff; overflow:auto;width:auto; background-color: #f5f5f5; border:1px solid #ccc;border-width:.1em .1em .1em .8em;padding:.2em .6em;"><table><tr><td><pre style="margin: 0; line-height: 125%">1
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ArticleStore.onChange(<span style="color: #008800; font-weight: bold">this</span>._onChange);
}
<b>FIG</b><span style="color: #333333">:</span> onChange <span style="color: #008800; font-weight: bold">function</span> being registered
</pre></td></tr></table></div>
<p class="l-sub-section"><span class="codeInsidePgrph">(this._onChange)</span> is being pushed to a changeListener array in the store's onChange method, shown below</p>
<!-- HTML generated using hilite.me --><div class = "common-margin-bottom" style="background: #ffffff; overflow:auto;width:auto; background-color: #f5f5f5; border:1px solid #ccc;border-width:.1em .1em .1em .8em;padding:.2em .6em;"><table><tr><td><pre style="margin: 0; line-height: 125%">1
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changeListeners.push(listener);
}
<b>FIG</b><span style="color: #333333">:</span> onChange function in store
</pre></td></tr></table></div>
<p> The <span class="codeInsidePgrph">triggerListeners(){...}</span> function is called
after the data is successfully fetched,and calling the registered callbacks from the array.Then the <span class="codeInsidePgrph">_onChange()</span> method in react components are executed.
</p>
<!-- HTML generated using hilite.me --><div class = "common-margin-bottom" style="background: #ffffff; overflow:auto;width:auto; background-color: #f5f5f5; border:1px solid #ccc;border-width:.1em .1em .1em .8em;padding:.2em .6em;"><table><tr><td><pre style="margin: 0; line-height: 125%">1
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changeListeners.forEach(<span style="color: #008800; font-weight: bold">function</span>(listener) {
listener();
})
};
<b>FIG</b><span style="color: #333333">:</span> Running each registered listener function
</pre></td></tr></table></div>
<div class = "common-margin-bottom" style="background: #ffffff; overflow:auto;width:auto; background-color: #f5f5f5; border:1px solid #ccc;border-width:.1em .1em .1em .8em;padding:.2em .6em;"><table><tr><td><pre style="margin: 0; line-height: 125%">1
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get(<span>"/api/articles"</span>).then((data) <span style="color: #333333">=></span> {
articleList <span style="color: #333333">=</span> data;
triggerListeners();
});
}
<b>FIG</b><span style="color: #333333">:</span> fetchArticleList() calls the triggerListeners() when data is retrieved
</pre></td></tr></table></div>
<p id="clientSideArticle"><span class="codeInsidePgrph">this.setState(getArticleList());</span>renders the ListArticles component with the updated data.</p>
</div>
<h2>Client Side (Article)</h2>
<h4>Create Article Component</h4>
<p>
To understand the framework, start with the example <b>CreateArticle.jsx</b> component. Let’s get straight into the code,
</p>
<div class="example-title">CreateArticle.jsx</div>
<!-- HTML generated using hilite.me --><div class = "common-margin-bottom" style="background: #ffffff; overflow:auto;width:auto;background-color: #f5f5f5; border:1px solid #ccc;border-width:.1em .1em .1em .8em;padding:.2em .6em;"><table><tr><td><pre style="margin: 0; line-height: 125%"> 1
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<span style="color: #008800; font-weight: bold">import</span> ArticleStore from <span>'./../../stores/ArticleStore.jsx'</span>;
<span style="color: #008800; font-weight: bold">import</span> {Grid, Row, Col, Panel, Button, Input, ButtonInput} from <span>'react-bootstrap'</span>
<span style="color: #008800; font-weight: bold">class</span> CreateArticle <span style="color: #008800; font-weight: bold">extends</span> React.Component {
constructor(props) {
<span style="color: #008800; font-weight: bold">super</span>(props);
<span style="color: #008800; font-weight: bold">this</span>.history <span style="color: #333333">=</span> props.history;
<span style="color: #008800; font-weight: bold">this</span>.state <span style="color: #333333">=</span> {};
<span style="color: #008800; font-weight: bold">this</span>.state.CreateArticle <span style="color: #333333">=</span> {};
<span style="color: #008800; font-weight: bold">this</span>.state.error <span style="color: #333333">=</span> <span>''</span>;
<span style="color: #008800; font-weight: bold">this</span>.handleInputTitle <span style="color: #333333">=</span> <span style="color: #008800; font-weight: bold">this</span>.handleInputTitle.bind(<span style="color: #008800; font-weight: bold">this</span>);
<span style="color: #008800; font-weight: bold">this</span>.handleInputContent <span style="color: #333333">=</span> <span style="color: #008800; font-weight: bold">this</span>.handleInputContent.bind(<span style="color: #008800; font-weight: bold">this</span>);
<span style="color: #008800; font-weight: bold">this</span>._formSubmit <span style="color: #333333">=</span> <span style="color: #008800; font-weight: bold">this</span>._formSubmit.bind(<span style="color: #008800; font-weight: bold">this</span>);
}
handleInputTitle(e) {
<span style="color: #008800; font-weight: bold">this</span>.state.CreateArticle.title <span style="color: #333333">=</span> e.target.value;
<span style="color: #008800; font-weight: bold">this</span>.setState({CreateArticle<span style="color: #333333">:</span> <span style="color: #008800; font-weight: bold">this</span>.state.CreateArticle});
}
handleInputContent(e) {
<span style="color: #008800; font-weight: bold">this</span>.state.CreateArticle.content <span style="color: #333333">=</span> e.target.value;
<span style="color: #008800; font-weight: bold">this</span>.setState({CreateArticle<span style="color: #333333">:</span> <span style="color: #008800; font-weight: bold">this</span>.state.CreateArticle});
}
_formSubmit(e) {
e.preventDefault();
ArticleStore.addArticle(<span style="color: #008800; font-weight: bold">this</span>.state.CreateArticle, <span style="color: #008800; font-weight: bold">this</span>.history);
}
render() {
<span style="color: #008800; font-weight: bold">return</span> (
<span style="color: #333333"><</span>Grid<span style="color: #333333">></span>
<span style="color: #333333"><</span>Row<span style="color: #333333">></span>
<span style="color: #333333"><</span>Col md<span style="color: #333333">=</span>{<span style="color: #0000DD; font-weight: bold">12</span>}<span style="color: #333333">></span>
<span style="color: #333333"><</span>h2<span style="color: #333333">></span>
<span style="color: #333333"><</span>b<span style="color: #333333">></span>Create Article<span style="color: #333333"><</span><span>/b></span>
<span style="color: #333333"><</span><span>/h2></span>
<span style="color: #333333"><</span>form onSubmit<span style="color: #333333">=</span>{<span style="color: #008800; font-weight: bold">this</span>._formSubmit}<span style="color: #333333">></span>
<span style="color: #333333"><</span>Input type<span style="color: #333333">=</span><span>"text"</span> label<span style="color: #333333">=</span><span>"Title"</span> onChange<span style="color: #333333">=</span>{<span style="color: #008800; font-weight: bold">this</span>.handleInputTitle} placeholder<span style="color: #333333">=</span><span>"Enter Article Title"</span><span style="color: #333333">/></span>
<span style="color: #333333"><</span>Input type<span style="color: #333333">=</span><span>"textarea"</span> label<span style="color: #333333">=</span><span>"Article Content"</span> onChange<span style="color: #333333">=</span>{<span style="color: #008800; font-weight: bold">this</span>.handleInputContent} placeholder<span style="color: #333333">=</span><span>"Article Content: "</span><span style="color: #333333">/></span>
<span style="color: #333333"><</span>ButtonInput type<span style="color: #333333">=</span><span>"submit"</span> value<span style="color: #333333">=</span><span>"Submit Button"</span> bsStyle<span style="color: #333333">=</span><span>"primary"</span><span style="color: #333333">/></span>
<span style="color: #333333"><</span><span>/form></span>
<span style="color: #333333"><</span><span>/Col></span>
<span style="color: #333333"><</span><span>/Row></span>
<span style="color: #333333"><</span><span>/Grid></span>
)
}
}
<span style="color: #008800; font-weight: bold">export</span> <span style="color: #008800; font-weight: bold">default</span> CreateArticle;
</pre></td></tr></table></div>
<p>
This component is responsible for creating a new Article. The <span class="codeInsidePgrph">handleInputTitle(e) {...}</span>
and the <span class="codeInsidePgrph">handleInputContent(e) {...}</span> takes the input from the user for the Article Title and Article Content.
Finally the <span class="codeInsidePgrph">_formSubmit(e) {...}</span> submit the newly created article.
</p>
<h4>Edit Article Component</h4>
<p>
In this part <b>EditArticle.jsx</b> component will be discussed. Let’s start with the code,
</p>
<div class="example-title">EditArticle.jsx</div>
<!-- HTML generated using hilite.me --><div class = "common-margin-bottom" style="background: #ffffff; overflow:auto;width:auto;background-color: #f5f5f5; border:1px solid #ccc;border-width:.1em .1em .1em .8em;padding:.2em .6em;"><table><tr><td><pre style="margin: 0; line-height: 125%"> 1
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<span style="color: #008800; font-weight: bold">import</span> ArticleStore from <span>'./../../stores/ArticleStore.jsx'</span>;
<span style="color: #008800; font-weight: bold">import</span> {Grid, Row, Col, Panel, Button, Input, ButtonInput} from <span>'react-bootstrap'</span>
<span style="color: #008800; font-weight: bold">function</span> getArticle() {
<span style="color: #008800; font-weight: bold">return</span> {EditArticle<span style="color: #333333">:</span> ArticleStore.getArticle()}
}
<span style="color: #008800; font-weight: bold">class</span> EditArticle <span style="color: #008800; font-weight: bold">extends</span> React.Component {
constructor(props) {
<span style="color: #008800; font-weight: bold">super</span>(props);
<span style="color: #008800; font-weight: bold">this</span>.state <span style="color: #333333">=</span> {};
<span style="color: #008800; font-weight: bold">this</span>.history <span style="color: #333333">=</span> props.history;
ArticleStore.fetchArticle(props.params.id);
<span style="color: #008800; font-weight: bold">this</span>.state<span style="color: #333333">=</span>getArticle();
<span style="color: #008800; font-weight: bold">this</span>.handleInputTitle <span style="color: #333333">=</span> <span style="color: #008800; font-weight: bold">this</span>.handleInputTitle.bind(<span style="color: #008800; font-weight: bold">this</span>);
<span style="color: #008800; font-weight: bold">this</span>.handleInputContent <span style="color: #333333">=</span> <span style="color: #008800; font-weight: bold">this</span>.handleInputContent.bind(<span style="color: #008800; font-weight: bold">this</span>);
<span style="color: #008800; font-weight: bold">this</span>._onChange <span style="color: #333333">=</span> <span style="color: #008800; font-weight: bold">this</span>._onChange.bind( <span style="color: #008800; font-weight: bold">this</span> );
<span style="color: #008800; font-weight: bold">this</span>._formSubmit <span style="color: #333333">=</span> <span style="color: #008800; font-weight: bold">this</span>._formSubmit.bind(<span style="color: #008800; font-weight: bold">this</span>);
}
handleInputTitle(e) {
<span style="color: #008800; font-weight: bold">this</span>.state.EditArticle.title <span style="color: #333333">=</span> e.target.value;
<span style="color: #008800; font-weight: bold">this</span>.setState({EditArticle<span style="color: #333333">:</span> <span style="color: #008800; font-weight: bold">this</span>.state.EditArticle});
}
handleInputContent(e) {
<span style="color: #008800; font-weight: bold">this</span>.state.EditArticle.content <span style="color: #333333">=</span> e.target.value;
<span style="color: #008800; font-weight: bold">this</span>.setState({EditArticle<span style="color: #333333">:</span> <span style="color: #008800; font-weight: bold">this</span>.state.EditArticle});
}
_formSubmit(e) {
e.preventDefault();
ArticleStore.editArticle(<span style="color: #008800; font-weight: bold">this</span>.state.EditArticle, <span style="color: #008800; font-weight: bold">this</span>.state.EditArticle._id,<span style="color: #008800; font-weight: bold">this</span>.history);
}
componentWillMount() {
ArticleStore.onChange(<span style="color: #008800; font-weight: bold">this</span>._onChange);
}
componentWillUnmount() {
ArticleStore.removeChangeListener( <span style="color: #008800; font-weight: bold">this</span>._onChange );
}
_onChange() {
<span style="color: #008800; font-weight: bold">this</span>.setState( getArticle() );
}
render() {
<span style="color: #008800; font-weight: bold">var</span> article <span style="color: #333333">=</span> <span style="color: #008800; font-weight: bold">this</span>.state.EditArticle;
<span style="color: #008800; font-weight: bold">return</span> (
<span style="color: #333333"><</span>Grid<span style="color: #333333">></span>
<span style="color: #333333"><</span>Row<span style="color: #333333">></span>
<span style="color: #333333"><</span>Col md<span style="color: #333333">=</span>{<span style="color: #0000DD; font-weight: bold">12</span>}<span style="color: #333333">></span>
<span style="color: #333333"><</span>h2<span style="color: #333333">></span>
<span style="color: #333333"><</span>b<span style="color: #333333">></span>Edit Article<span style="color: #333333"><</span><span>/b></span>
<span style="color: #333333"><</span><span>/h2></span>
<span style="color: #333333"><</span>form onSubmit<span style="color: #333333">=</span>{<span style="color: #008800; font-weight: bold">this</span>._formSubmit}<span style="color: #333333">></span>
<span style="color: #333333"><</span>Input type<span style="color: #333333">=</span><span>"text"</span> value<span style="color: #333333">=</span>{article.title} label<span style="color: #333333">=</span><span>"Title"</span> onChange<span style="color: #333333">=</span>{<span style="color: #008800; font-weight: bold">this</span>.handleInputTitle} placeholder<span style="color: #333333">=</span><span>"Enter Article Title"</span><span style="color: #333333">/></span>
<span style="color: #333333"><</span>Input type<span style="color: #333333">=</span><span>"textarea"</span> value<span style="color: #333333">=</span>{article.content} label<span style="color: #333333">=</span><span>"Article Content"</span> onChange<span style="color: #333333">=</span>{<span style="color: #008800; font-weight: bold">this</span>.handleInputContent} placeholder<span style="color: #333333">=</span><span>"Article Content: "</span><span style="color: #333333">/></span>
<span style="color: #333333"><</span>ButtonInput type<span style="color: #333333">=</span><span>"submit"</span> value<span style="color: #333333">=</span><span>"Submit Button"</span> bsStyle<span style="color: #333333">=</span><span>"primary"</span><span style="color: #333333">/></span>
<span style="color: #333333"><</span><span>/form></span>
<span style="color: #333333"><</span><span>/Col></span>
<span style="color: #333333"><</span><span>/Row></span>
<span style="color: #333333"><</span><span>/Grid></span>
)
}
}
<span style="color: #008800; font-weight: bold">export</span> <span style="color: #008800; font-weight: bold">default</span> EditArticle;
</pre></td></tr></table></div>
<p>This component is responsible for updating an Article.
<span class="codeInsidePgrph">ArticleStore.fetchArticle(props.params.id);</span> retrieves the desired article by it's ID
from the list to be updated.
</p>
<p>
Inside <span class="codeInsidePgrph">handleInputTitle(e) {...}</span>, <span class="codeInsidePgrph">this.state.EditArticle.title = e.target.value;</span>
takes the input from the user to update the Article Title and
<span class="codeInsidePgrph">this.setState({EditArticle: this.state.EditArticle});</span>.
updates the object whenever changes are made.
</p>
<p>
The <span class="codeInsidePgrph">handleInputContent(e) {...}</span> does exactly same thing as the
<span class="codeInsidePgrph">handleInputTitle(e) {...}</span>. Finally,
the <span class="codeInsidePgrph">_formSubmit(e) {...}</span> submit the updated article.
</p>
<h4>View Article Component</h4>
<p>
The <b>ViewArticle.jsx</b> component is almost similar with the <b>EditArticle.jsx</b> component, It allows
the user to <b>view</b>, <b>delete</b> and <b>edit</b> an article. <b>Delete</b> and <b>edit</b> works only if the user is logged in.
</p>
<div class="example-title">ViewArticle.jsx</div>
<!-- HTML generated using hilite.me --><div class = "common-margin-bottom" style="background: #ffffff; overflow:auto;width:auto;background-color: #f5f5f5;border:solid gray;border-width:.1em .1em .1em .8em;padding:.2em .6em;"><table><tr><td><pre style="margin: 0; line-height: 125%"> 1
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<span style="color: #008800; font-weight: bold">import</span> { Link } from <span>'react-router'</span>;
<span style="color: #008800; font-weight: bold">import</span> ArticleStore from <span>'./../../stores/ArticleStore.jsx'</span>;
<span style="color: #008800; font-weight: bold">import</span> {Grid, Row, Col, Panel, Pagination,Button, Well, Label} from <span>'react-bootstrap'</span>;
<span style="color: #008800; font-weight: bold">import</span> {LinkContainer} from <span>'react-router-bootstrap'</span>;
<span style="color: #008800; font-weight: bold">import</span> auth from <span>'./../../services/Authentication'</span>;
<span style="color: #008800; font-weight: bold">function</span> getArticle() {
<span style="color: #008800; font-weight: bold">return</span> {article<span style="color: #333333">:</span> ArticleStore.getArticle()}
}
<span style="color: #008800; font-weight: bold">class</span> ViewArticle <span style="color: #008800; font-weight: bold">extends</span> React.Component {
constructor(props, context){
<span style="color: #008800; font-weight: bold">super</span>(props, context);
ArticleStore.fetchArticle(props.params.id);
ArticleStore.fetchArticleList();
<span style="color: #008800; font-weight: bold">this</span>.state <span style="color: #333333">=</span> {};
<span style="color: #008800; font-weight: bold">this</span>.state.article <span style="color: #333333">=</span> {};
<span style="color: #008800; font-weight: bold">this</span>.state.loggedIn <span style="color: #333333">=</span> auth.loggedIn();
<span style="color: #008800; font-weight: bold">this</span>.state.articleID <span style="color: #333333">=</span> <span style="color: #008800; font-weight: bold">this</span>.props.params.id;
<span style="color: #008800; font-weight: bold">this</span>._onChange <span style="color: #333333">=</span> <span style="color: #008800; font-weight: bold">this</span>._onChange.bind( <span style="color: #008800; font-weight: bold">this</span> );
<span style="color: #008800; font-weight: bold">this</span>.deleteArticle <span style="color: #333333">=</span> <span style="color: #008800; font-weight: bold">this</span>.deleteArticle.bind(<span style="color: #008800; font-weight: bold">this</span>);
}
componentWillMount() {
ArticleStore.onChange(<span style="color: #008800; font-weight: bold">this</span>._onChange);
}
componentWillUnmount() {
ArticleStore.removeChangeListener(<span style="color: #008800; font-weight: bold">this</span>._onChange);
}
_onChange() {
<span style="color: #008800; font-weight: bold">this</span>.setState( getArticle());
}
deleteArticle() {
ArticleStore.deleteArticle(<span style="color: #008800; font-weight: bold">this</span>.state.articleID, <span style="color: #008800; font-weight: bold">this</span>.props.history);
}
render(){
<span style="color: #008800; font-weight: bold">var</span> article <span style="color: #333333">=</span> <span style="color: #008800; font-weight: bold">this</span>.state.article;
<span style="color: #008800; font-weight: bold">return</span> (
<span style="color: #333333"><</span>Grid<span style="color: #333333">></span>
<span style="color: #333333"><</span>Row<span style="color: #333333">></span>
<span style="color: #333333"><</span>Col md<span style="color: #333333">=</span>{<span style="color: #0000DD; font-weight: bold">12</span>} lg<span style="color: #333333">=</span>{<span style="color: #0000DD; font-weight: bold">12</span>} sm<span style="color: #333333">=</span>{<span style="color: #0000DD; font-weight: bold">12</span>} xs<span style="color: #333333">=</span>{<span style="color: #0000DD; font-weight: bold">12</span>}<span style="color: #333333">></span>
<span style="color: #333333"><</span>h1<span style="color: #333333">></span>{article.title}<span style="color: #333333"><</span><span>/h1></span>
<span style="color: #333333"><</span>hr<span style="color: #333333">><</span><span>/hr></span>
<span style="color: #333333"><</span><span>/Col></span>
<span style="color: #333333"><</span>Col md<span style="color: #333333">=</span>{<span style="color: #0000DD; font-weight: bold">8</span>} lg<span style="color: #333333">=</span>{<span style="color: #0000DD; font-weight: bold">8</span>} sm<span style="color: #333333">=</span>{<span style="color: #0000DD; font-weight: bold">8</span>} xs<span style="color: #333333">=</span>{<span style="color: #0000DD; font-weight: bold">8</span>}<span style="color: #333333">></span>
<span style="color: #333333"><</span>h3<span style="color: #333333">></span>{article.content}<span style="color: #333333"><</span><span>/h3></span>
<span style="color: #333333"><</span><span>/Col></span>
<span style="color: #333333"><</span>Col md<span style="color: #333333">=</span>{<span style="color: #0000DD; font-weight: bold">4</span>} lg<span style="color: #333333">=</span>{<span style="color: #0000DD; font-weight: bold">4</span>} sm<span style="color: #333333">=</span>{<span style="color: #0000DD; font-weight: bold">4</span>} xs<span style="color: #333333">=</span>{<span style="color: #0000DD; font-weight: bold">4</span>}<span style="color: #333333">></span>
{<span style="color: #008800; font-weight: bold">this</span>.state.loggedIn <span style="color: #333333">&&</span> <span style="color: #333333"><</span>div className<span style="color: #333333">=</span><span>"pull-right"</span><span style="color: #333333">></span>
<span style="color: #333333"><</span>LinkContainer className<span style="color: #333333">=</span><span>"editBtnCSS"</span> to<span style="color: #333333">=</span>{<span>`</span><span style="color: #333333">/</span>articles<span style="color: #333333">/</span>edit<span style="color: #333333">/</span>${article._id}<span>`</span>}<span style="color: #333333">><</span>Button bsStyle<span style="color: #333333">=</span><span>"primary"</span><span style="color: #333333">></span>Edit<span style="color: #333333"><</span><span>/Button></LinkContainer></span>
<span style="color: #333333"><</span>Button onClick<span style="color: #333333">=</span>{<span style="color: #008800; font-weight: bold">this</span>.deleteArticle} bsStyle<span style="color: #333333">=</span><span>"danger"</span><span style="color: #333333">></span>Delete<span style="color: #333333"><</span><span>/Button></span>
<span style="color: #333333"><</span><span>/div></span>
}
<span style="color: #333333"><</span><span>/Col></span>
<span style="color: #333333"><</span><span>/Row></span>
<span style="color: #333333"><</span><span>/Grid></span>
)
}
}
<span style="color: #008800; font-weight: bold">export</span> <span style="color: #008800; font-weight: bold">default</span> ViewArticle;
</pre></td></tr></table></div>
<p id = "serverSideArticle">
Inside the <span class="codeInsidePgrph">render(){...} this.state.loggedIn &&</span> shows the Edit & Delete Button if the user logged in.
</p>
</div>
<!-- /*********************** new component backend start**********************/ -->
<div>
<h2>Server Side (Article)</h2>
<p class="l-sub-section">
The <span class="codeInsidePgrph">Article.js</span> contains the article schema using mongoose.
</p>
<div class="example-title">Article.js</div>
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<span style="color: #008800; font-weight: bold">var</span> Schema <span style="color: #333333">=</span> mongoose.Schema;
<span style="color: #008800; font-weight: bold">var</span> ArticleSchema <span style="color: #333333">=</span> {
title<span style="color: #333333">:</span> {
type<span style="color: #333333">:</span> <span style="color: #007020">String</span>,
<span style="color: #008800; font-weight: bold">default</span><span style="color: #333333">:</span> <span>''</span>,
trim<span style="color: #333333">:</span> <span style="color: #008800; font-weight: bold">true</span>
},
content<span style="color: #333333">:</span> {
type<span style="color: #333333">:</span> <span style="color: #007020">String</span>,
<span style="color: #008800; font-weight: bold">default</span><span style="color: #333333">:</span> <span>''</span>,
trim<span style="color: #333333">:</span> <span style="color: #008800; font-weight: bold">true</span>
},
user<span style="color: #333333">:</span> {
type<span style="color: #333333">:</span> Schema.ObjectId,
ref<span style="color: #333333">:</span> <span>'User'</span>
},
created<span style="color: #333333">:</span> {
type<span style="color: #333333">:</span> <span style="color: #007020">Date</span>,
<span style="color: #008800; font-weight: bold">default</span><span style="color: #333333">:</span> <span style="color: #007020">Date</span>.now
}
}
<span style="color: #008800; font-weight: bold">var</span> Article <span style="color: #333333">=</span> mongoose.model(<span>'Article'</span>, ArticleSchema, <span>'articles'</span>);
module.exports <span style="color: #333333">=</span> Article;
</pre></td></tr></table>
</div>
<p class="l-sub-section">
Backend API routes are written in <span class="codeInsidePgrph">server.routes.js</span>. Depending on the route being called, the appropriate function will be executed.
</p>
<div class="example-title">article.server.routes.js</div>
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