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Folder Structure
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<a href="https://github.com/vapor/documentation/edit/beta/3.0/docs/getting-started/structure.md" title="Edit this page" class="md-icon md-content__icon">&#xE3C9;</a>
<h1 id="structure">Structure<a class="headerlink" href="#structure" title="Permanent link">&para;</a></h1>
<p>This section explains the structure of a typical Vapor application to help get
you familiar with where things go.</p>
<h2 id="folder-structure">Folder Structure<a class="headerlink" href="#folder-structure" title="Permanent link">&para;</a></h2>
<p>Vapor's folder structure builds on top of <a href="../spm#folder-structure">SPM's folder structure</a>.</p>
<div class="codehilite"><pre><span></span>.
├── Public
├── Sources
│ ├── App
│ │ ├── Controllers
│ │ ├── Models
│ │ ├── boot.swift
│ │ ├── configure.swift
│ │ └── routes.swift
│ └── Run
│ └── main.swift
├── Tests
│ └── AppTests
└── Package.swift
</pre></div>
<p>Let's take a look at what each of these folders and files does.</p>
<h2 id="public">Public<a class="headerlink" href="#public" title="Permanent link">&para;</a></h2>
<p>This folder contains any public files that will be served by your app.
This is usually images, style sheets, and browser scripts.</p>
<p>Whenever Vapor responds to a request, it will first check if the requested
item is in this folder. If it is, it skips your application logic and returns
the file immediately.</p>
<p>For example, a request to <code>localhost:8080/favicon.ico</code> will check to see
if <code>Public/favicon.ico</code> exists. If it does, Vapor will return it.</p>
<h2 id="sources">Sources<a class="headerlink" href="#sources" title="Permanent link">&para;</a></h2>
<p>This folder contains all of the Swift source files for your project.
The top level folders (<code>App</code> and <code>Run</code>) reflect your package's modules,
as declared in the <a href="../spm#targets">package manifest</a>.</p>
<h3 id="app">App<a class="headerlink" href="#app" title="Permanent link">&para;</a></h3>
<p>This is the most important folder in your application, it's where all of
the application logic goes!</p>
<h4 id="controllers">Controllers<a class="headerlink" href="#controllers" title="Permanent link">&para;</a></h4>
<p>Controllers are great way of grouping together application logic. Most controllers
have many functions that accept a request and return some sort of response.</p>
<div class="admonition tip">
<p class="admonition-title">Tip</p>
<p>Vapor supports, but does not enforce the MVC pattern</p>
</div>
<h4 id="models">Models<a class="headerlink" href="#models" title="Permanent link">&para;</a></h4>
<p>The <code>Models</code> folder is a great place to store your <a href="../content/"><code>Content</code></a> structs or
Fluent <a href="../fluent/getting-started/models.md"><code>Model</code></a>s.</p>
<h4 id="bootswift">boot.swift<a class="headerlink" href="#bootswift" title="Permanent link">&para;</a></h4>
<p>This file contains a function that will be called <em>after</em> your application has booted,
but <em>before</em> it has started running. This is a great place do things that should happen
every time your application starts.</p>
<p>You have access to the <a href="../application/"><code>Application</code></a> here which you can use to create
any <a href="../application/#services">services</a> you might need.</p>
<h4 id="configureswift">configure.swift<a class="headerlink" href="#configureswift" title="Permanent link">&para;</a></h4>
<p>This file contains a function that receives the config, environment, and services for your
application as input. This is a great place to make changes to your config or register
<a href="../application/#services">services</a> to your application.</p>
<h4 id="routesswift">routes.swift<a class="headerlink" href="#routesswift" title="Permanent link">&para;</a></h4>
<p>This file contains the main route collection for your app. This is where you should assign routes
for your controller methods.</p>
<p>You'll notice there's one example route in there that returns the "hello, world" response we saw earlier.</p>
<p>You can create as many route collections as you want to further organize your code. Just make sure
to register them in this main route collection. </p>
<h2 id="tests">Tests<a class="headerlink" href="#tests" title="Permanent link">&para;</a></h2>
<p>Each non-executable module in your <code>Sources</code> folder should have a corresponding <code>...Tests</code> folder.</p>
<h3 id="apptests">AppTests<a class="headerlink" href="#apptests" title="Permanent link">&para;</a></h3>
<p>This folder contains the unit tests for code in your <code>App</code> module.
Learn more about testing in <a href="../testing/getting-started.md">Testing &rarr; Getting Started</a>.</p>
<h2 id="packageswift">Package.swift<a class="headerlink" href="#packageswift" title="Permanent link">&para;</a></h2>
<p>Finally is SPM's <a href="../spm/#package-manifest">package manifest</a>.</p>
</article>
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