How-to add a layer search
=========================

Search operations are only supported on ``vector``, ``geojson``,
``ags-vector``, ``wfs``, and ``mapserver-wfs`` map-source types.

You can also add search operations to ``ags``, ``wms``, and  ``mapserver`` mapsources using the query-as technique.

Add a supported vector map-source
---------------------------------

This how-to references the ``firestations`` source and ``fire_stations``
layer. For more information on setting those up in your local demo, read
the :doc:`/howto/addlayer/add-a-layer` guide. This example
creates a WFS-source for the Firestations layer.

Add the following to ``mapbook.xml``:

::

    <map-source name="firestations-wfs" type="mapserver-wfs">
        <file>./demo/firestations/firestations.map</file>
        <param name="typename" value="ms:fire_stations" />
        <layer name="fire_stations" selectable="true" title="Firestations">
            <template name="search"><![CDATA[
            <div class="result-item">
                <div class="result-title">
                Firestation
                </div>
                <b>Station City:</b> {{ properties.Dak_GIS__4 }}<br>
                <b>Station Number:</b> {{ properties.Dak_GIS__5 }}<br>
            <div>
            ]]></template>
        </layer>
    </map-source>

Configure a search service
--------------------------

In ``app.js``, a new search service needs configured for that layer:

.. code:: javascript

    // Add a search service
    app.registerService('search-firestations', SearchService, {
        // search only the firestations-wfs/fire_stations layer.
        searchLayers: ['firestations-wfs/fire_stations'],
        // Dak_GIS__4 stores the name of the Firestation's city.
        fields: [
            {type: 'text', label: 'Station city', name: 'Dak_GIS__4'}
        ]
    });

Add the search service to the toolbar
-------------------------------------

In the ``mapbook.xml``:

1. Find the ``<toolbar>`` element.
2. Inside the ``<toolbar>`` element, add the follow entry for the new
   search service:

   .. code:: xml

       <tool name="search-firestations" title="Search Firestations" type="service"/>