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{% block title %}Configuration | Merest{% endblock %}
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<h1 class="page-title">API Configuration</h1>
<section>
    <article>
  <a name='router'></a>
  <h3>Router configuration</h3>
      <p>
        To expose <code>mongoose.Model</code> you should create an API Router.
        It could be done in two ways:
        <ul>
          <li>By calling <code>ModelAPIExpress.expose</code> method</li>
          <li>By creating <code>ModelAPIRouter</code> and then attaching it with method
            <code>attachTo</code> to <code>ModelAPIExpress</code>
          </li>
        </ul>
      </p>

      <p>Using <code>ModelAPIExpress.expose</code>:</p>
<pre class="prettyprint source lang-javascript"><code>const api = new merest.ModelAPIExpress();

api.expose(models.Vector, {
  // router configuration parameters should be here
});</code></pre>

<p>Creating <code>ModelAPIRouter</code> explicitly:</p>
<pre class="prettyprint source lang-javascript">const api = new merest.ModelAPIExpress();
const vectorApi = new merest.ModelAPIRouter(models.Vector, {
  // router configuration parameters should be here
});

vectorApi.attachTo(api);</code></pre>

<p><strong>merest</strong> supports wide range of router configuration parameters:</p>
<pre class="prettyprint source lang-javascript"><code>var api = new merest.ModelAPIExpress();
api.expose(models.Vector, {
  path: '/cool-vectors', // overrides standard /model-plural-name path
  options: false, // disables end-point for OPTIONS method
  create: 'get', // mounts the CREATE end-point on the HTTP GET method
  search: 'post', // mounts the SEARCH end-point on the HTTP POST to resolve path-conflict with CREATE end-point
  details: 'Show details for a vector', // assigns the description for DETAILS end-point
  update: 'put', // mounts UPDATE end-point to the HTTP PUT
  delete: false, // disables to delete vectors
  fields: 'x y', // forces to response with x, y and _id fields
  matchId: '\d+' // configures the /:id routes with integer (not uuid) :id parameter
});</code></pre>


<h4>All router configuration parameters are:</h4><ul>
<li><strong>path</strong>: <code>String</code> -  the base path for all router end-points. It is relative to the api mounted path</li>
<li><strong>middlewares</strong>: <code>Function|Array(Function)</code> -  the middleware(s) that should be mounted on the base path of all end-points</li>
<li><strong>matchId</strong>: <code>String|RegExp</code> - the pattern to match values of <code>id</code> (<code>_id</code>) field in the end-point path. The default is <code>'[a-f\\d]{24}'</code></li>
<li><strong>options</strong>: <code>Boolean|String|Object</code> -  configuration for OPTIONS HTTP-method</li>
<li><strong>create</strong>: <code>Boolean|String|Object</code> - configuration for Instance creation</li>
<li><strong>search</strong>: <code>Boolean|String|Object</code> - configuration for searching of instances-</li>
<li><strong>details</strong>: <code>Boolean|String|Object</code> - configuration for instance details end-point</li>
<li><strong>update</strong>: <code>Boolean|String|Object</code> - configuration for instance update</li>
<li><strong>delete</strong>: <code>Boolean|String|Object</code> - configuration for instance removing</li>
<a name="expose"></a>
<li><strong>expose</strong>: <code>Object</code> - configuration for instance method(s) exposition. (see. <a href="conf-methods.html">Model methods</a> for details)</li>
<li><strong>exposeStatic</strong>: <code>Object</code> - configuration for static method(s) exposition (see. <a href="conf-methods.html">Model methods</a> for details)</li>
</ul>
<p>Additionally some of end-point parameters could be specified on the router configuration level:
  <code>fields</code>, <code>populate</code>, <code>filter</code>, <code>readonly</code>
</p>
<p>Also some of end-points parameters are applicable exactly for one end-point <code>SEARCH</code>.
So it is reasonable to define them in the router level. These parameters are:
<code>queryFields</code>, <code>sort</code>, <code>limit</code>, <code>skip</code>,
</p>

<p>Parameters named as end-points (create, search, etc.) could be one of: <code>Boolean</code>, <code>String</code> and <code>Object</code>.</p>
<h5>In case of <code>Boolean</code>:</h5><ul>
<li><code>false</code>: appropriate end-point is disabled</li>
<li><code>true</code>: the end-point is allowed and default or common (see further) options will be used to configure it</li>
</ul>
<h5>In case of <code>String</code>:</h5><p>If value is some of HTTP-method supported by Express (<code>checkout</code>, <code>copy</code>, <code>delete</code>, <code>get</code>, <code>head</code>, <code>lock</code>, <code>merge</code>, <code>mkactivity</code>, <code>mkcol</code>, <code>move</code>, <code>'m-search'</code>, <code>notify</code>, <code>options</code>, <code>patch</code>, <code>post</code>, <code>purge</code>, <code>put</code>, <code>report</code>, <code>search</code>, <code>subscribe</code>, <code>trace</code>, <code>unlock</code>, <code>unsubscribe</code>), then the appropriate method is allowed and will be
mounted on specified HTTP-method.
Otherwise the value will be used as a description of the appropriate end-point returned
by the OPTIONS HTTP-method and swagger api-documentation</p>
<h5>In case of <code>Object</code>:</h5>
<p>The appropriate end-point is allowed and keys of the value will be used to configure this end-point.</p>
<p>The end-point configuration options are bellow.</p>

<br class="clear">
<hr>
<a href='installation.html'>Next (Installation) ></a>
</article>
</section>
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