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Introduction
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Route Syntax
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Router
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Path-based Routing
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Name-based Routing
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Route Data
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Route Data Validation
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Route Conflicts
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Plumatic Schema
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Clojure.spec
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Data-specs
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Ring-router
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Reverse-routing
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Static Resources
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Dynamic Extensions
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Data-driven Middleware
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Transforming Middleware Chain
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Middleware Registry
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Default Middleware
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Pluggable Coercion
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Route Data Validation
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Compiling Middleware
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Swagger Support
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Interceptors
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Pedestal
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Sieppari
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Default Interceptors
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Basics
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Browser integration
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Controllers
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Configuring Routers
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Composing Routers
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Different Routers
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Route Validation
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<h1 id="introduction">Introduction</h1>
<p><a href="https://github.com/metosin/reitit" target="_blank">Reitit</a> is a fast data-driven router for Clojure(Script).</p>
<ul>
<li>Simple data-driven <a href="basics/route_syntax.html">route syntax</a></li>
<li><a href="basics/route_conflicts.html">Route conflict resolution</a></li>
<li>First-class <a href="basics/route_data.html">route data</a></li>
<li>Bi-directional routing</li>
<li><a href="coercion/coercion.html">Pluggable coercion</a> (<a href="https://github.com/plumatic/schema" target="_blank">schema</a> &amp; <a href="https://clojure.org/about/spec" target="_blank">clojure.spec</a>)</li>
<li>Helpers for <a href="ring/ring.html">ring</a>, <a href="http/interceptors.html">http</a> &amp; <a href="frontend/basics.html">the browser</a></li>
<li>Extendable</li>
<li>Modular</li>
<li><a href="performance.html">Fast</a></li>
</ul>
<p>Modules:</p>
<ul>
<li><code>reitit</code> - all bundled</li>
<li><code>reitit-core</code> - the routing core</li>
<li><code>reitit-ring</code> - a <a href="ring/ring.html">ring router</a></li>
<li><code>reitit-middleware</code> - <a href="ring/default_middleware.html">common middleware</a> for <code>reitit-ring</code></li>
<li><code>reitit-spec</code> <a href="https://clojure.org/about/spec" target="_blank">clojure.spec</a> coercion</li>
<li><code>reitit-schema</code> <a href="https://github.com/plumatic/schema" target="_blank">Schema</a> coercion</li>
<li><code>reitit-swagger</code> <a href="https://swagger.io/" target="_blank">Swagger2</a> apidocs</li>
<li><code>reitit-swagger-ui</code> Integrated <a href="https://github.com/swagger-api/swagger-ui" target="_blank">Swagger UI</a>.</li>
<li><code>reitit-frontend</code> Tools for <a href="frontend/basics.html">frontend routing</a></li>
<li><code>reitit-http</code> http-routing with Pedestal-style Interceptors</li>
<li><code>reitit-interceptors</code> - <a href="http/default_interceptors.html">common interceptors</a> for <code>reitit-http</code></li>
<li><code>reitit-sieppari</code> support for <a href="https://github.com/metosin/sieppari" target="_blank">Sieppari</a> Interceptors</li>
</ul>
<h2 id="latest-version">Latest version</h2>
<p>All bundled:</p>
<pre><code class="lang-clj">[metosin/reitit <span class="hljs-string">&quot;0.2.9&quot;</span>]
</code></pre>
<p>Optionally, the parts can be required separately:</p>
<pre><code class="lang-clj">[metosin/reitit-core <span class="hljs-string">&quot;0.2.9&quot;</span>]
<span class="hljs-comment">;; coercion</span>
[metosin/reitit-spec <span class="hljs-string">&quot;0.2.9&quot;</span>]
[metosin/reitit-schema <span class="hljs-string">&quot;0.2.9&quot;</span>]
<span class="hljs-comment">;; ring helpers</span>
[metosin/reitit-ring <span class="hljs-string">&quot;0.2.9&quot;</span>]
[metosin/reitit-middleware <span class="hljs-string">&quot;0.2.9&quot;</span>]
<span class="hljs-comment">;; swagger-support for ring &amp; http</span>
[metosin/reitit-swagger <span class="hljs-string">&quot;0.2.9&quot;</span>]
[metosin/reitit-swagger-ui <span class="hljs-string">&quot;0.2.9&quot;</span>]
<span class="hljs-comment">;; frontend helpers</span>
[metosin/reitit-frontend <span class="hljs-string">&quot;0.2.9&quot;</span>]
<span class="hljs-comment">;; http with interceptors</span>
[metosin/reitit-http <span class="hljs-string">&quot;0.2.9&quot;</span>]
[metosin/reitit-interceptors <span class="hljs-string">&quot;0.2.9&quot;</span>]
[metosin/reitit-sieppari <span class="hljs-string">&quot;0.2.9&quot;</span>]
</code></pre>
<p>There is <a href="https://clojurians.slack.com/messages/reitit/" target="_blank">#reitit</a> in <a href="http://clojurians.net/" target="_blank">Clojurians Slack</a> for discussion &amp; help.</p>
<h1 id="examples">Examples</h1>
<h2 id="simple-router">Simple router</h2>
<pre><code class="lang-clj">(<span class="hljs-name">require</span> &apos;[reitit.core <span class="hljs-symbol">:as</span> r])
(<span class="hljs-name"><span class="hljs-builtin-name">def</span></span> router
(<span class="hljs-name">r/router</span>
[[<span class="hljs-string">&quot;/api/ping&quot;</span> <span class="hljs-symbol">::ping</span>]
[<span class="hljs-string">&quot;/api/orders/:id&quot;</span> <span class="hljs-symbol">::order-by-id</span>]]))
</code></pre>
<p>Routing:</p>
<pre><code class="lang-clj">(<span class="hljs-name">r/match-by-path</span> router <span class="hljs-string">&quot;/api/ipa&quot;</span>)
<span class="hljs-comment">; nil</span>
(<span class="hljs-name">r/match-by-path</span> router <span class="hljs-string">&quot;/api/ping&quot;</span>)
<span class="hljs-comment">; #Match{:template &quot;/api/ping&quot;</span>
<span class="hljs-comment">; :data {:name ::ping}</span>
<span class="hljs-comment">; :result nil</span>
<span class="hljs-comment">; :path-params {}</span>
<span class="hljs-comment">; :path &quot;/api/ping&quot;}</span>
(<span class="hljs-name">r/match-by-path</span> router <span class="hljs-string">&quot;/api/orders/1&quot;</span>)
<span class="hljs-comment">; #Match{:template &quot;/api/orders/:id&quot;</span>
<span class="hljs-comment">; :data {:name ::order-by-id}</span>
<span class="hljs-comment">; :result nil</span>
<span class="hljs-comment">; :path-params {:id &quot;1&quot;}</span>
<span class="hljs-comment">; :path &quot;/api/orders/1&quot;}</span>
</code></pre>
<p>Reverse-routing:</p>
<pre><code class="lang-clj">(<span class="hljs-name">r/match-by-name</span> router <span class="hljs-symbol">::ipa</span>)
<span class="hljs-comment">; nil</span>
(<span class="hljs-name">r/match-by-name</span> router <span class="hljs-symbol">::ping</span>)
<span class="hljs-comment">; #Match{:template &quot;/api/ping&quot;</span>
<span class="hljs-comment">; :data {:name ::ping}</span>
<span class="hljs-comment">; :result nil</span>
<span class="hljs-comment">; :path-params {}</span>
<span class="hljs-comment">; :path &quot;/api/ping&quot;}</span>
(<span class="hljs-name">r/match-by-name</span> router <span class="hljs-symbol">::order-by-id</span>)
<span class="hljs-comment">; #PartialMatch{:template &quot;/api/orders/:id&quot;</span>
<span class="hljs-comment">; :data {:name :user/order-by-id}</span>
<span class="hljs-comment">; :result nil</span>
<span class="hljs-comment">; :path-params nil</span>
<span class="hljs-comment">; :required #{:id}}</span>
(<span class="hljs-name">r/partial-match?</span> (<span class="hljs-name">r/match-by-name</span> router <span class="hljs-symbol">::order-by-id</span>))
<span class="hljs-comment">; true</span>
(<span class="hljs-name">r/match-by-name</span> router <span class="hljs-symbol">::order-by-id</span> {<span class="hljs-symbol">:id</span> <span class="hljs-number">2</span>})
<span class="hljs-comment">; #Match{:template &quot;/api/orders/:id&quot;,</span>
<span class="hljs-comment">; :data {:name ::order-by-id},</span>
<span class="hljs-comment">; :result nil,</span>
<span class="hljs-comment">; :path-params {:id 2},</span>
<span class="hljs-comment">; :path &quot;/api/orders/2&quot;}</span>
</code></pre>
<h2 id="ring-router">Ring-router</h2>
<p>Ring-router adds support for <code>:handler</code> functions, <code>:middleware</code> and routing based on <code>:request-method</code>. It also supports pluggable parameter coercion (<code>clojure.spec</code>), data-driven middleware, route and middleware compilation, dynamic extensions and more.</p>
<pre><code class="lang-clj">(<span class="hljs-name">require</span> &apos;[reitit.ring <span class="hljs-symbol">:as</span> ring])
(<span class="hljs-name"><span class="hljs-builtin-name">defn</span></span> handler [_]
{<span class="hljs-symbol">:status</span> <span class="hljs-number">200</span>, <span class="hljs-symbol">:body</span> <span class="hljs-string">&quot;ok&quot;</span>})
(<span class="hljs-name"><span class="hljs-builtin-name">defn</span></span> wrap [handler id]
(<span class="hljs-name"><span class="hljs-builtin-name">fn</span></span> [request]
(<span class="hljs-name">update</span> (<span class="hljs-name">handler</span> request) <span class="hljs-symbol">:wrap</span> (<span class="hljs-name">fnil</span> conj &apos;()) id)))
(<span class="hljs-name"><span class="hljs-builtin-name">def</span></span> app
(<span class="hljs-name">ring/ring-handler</span>
(<span class="hljs-name">ring/router</span>
[<span class="hljs-string">&quot;/api&quot;</span> {<span class="hljs-symbol">:middleware</span> [[wrap <span class="hljs-symbol">:api</span>]]}
[<span class="hljs-string">&quot;/ping&quot;</span> {<span class="hljs-symbol">:get</span> handler
<span class="hljs-symbol">:name</span> <span class="hljs-symbol">::ping</span>}]
[<span class="hljs-string">&quot;/admin&quot;</span> {<span class="hljs-symbol">:middleware</span> [[wrap <span class="hljs-symbol">:admin</span>]]}
[<span class="hljs-string">&quot;/users&quot;</span> {<span class="hljs-symbol">:get</span> handler
<span class="hljs-symbol">:post</span> handler}]]])))
</code></pre>
<p>Routing:</p>
<pre><code class="lang-clj">(<span class="hljs-name">app</span> {<span class="hljs-symbol">:request-method</span> <span class="hljs-symbol">:get</span>, <span class="hljs-symbol">:uri</span> <span class="hljs-string">&quot;/api/admin/users&quot;</span>})
<span class="hljs-comment">; {:status 200, :body &quot;ok&quot;, :wrap (:api :admin}</span>
(<span class="hljs-name">app</span> {<span class="hljs-symbol">:request-method</span> <span class="hljs-symbol">:put</span>, <span class="hljs-symbol">:uri</span> <span class="hljs-string">&quot;/api/admin/users&quot;</span>})
<span class="hljs-comment">; nil</span>
</code></pre>
<p>Reverse-routing:</p>
<pre><code class="lang-clj">(<span class="hljs-name">require</span> &apos;[reitit.core <span class="hljs-symbol">:as</span> r])
(<span class="hljs-name"><span class="hljs-builtin-name">-&gt;</span></span> app (<span class="hljs-name">ring/get-router</span>) (<span class="hljs-name">r/match-by-name</span> <span class="hljs-symbol">::ping</span>))
<span class="hljs-comment">; #Match{:template &quot;/api/ping&quot;</span>
<span class="hljs-comment">; :data {:middleware [[#object[user$wrap] :api]]</span>
<span class="hljs-comment">; :get {:handler #object[user$handler]}</span>
<span class="hljs-comment">; :name ::ping}</span>
<span class="hljs-comment">; :result #Methods{...}</span>
<span class="hljs-comment">; :path-params nil</span>
<span class="hljs-comment">; :path &quot;/api/ping&quot;}</span>
</code></pre>
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