How to add a map with leaflet programmatically
Sometimes you would like to add a map to a node or block without the need for detailled configuration options. You simply want to display a map and be done with it.
Fortunately this is an easy task using Leaflet.
Say you have a value for the location and one for the country and would like to print this "address" in a map.
So you need to first install Leaflet and Geocoder and then use this function to generate the map:
<?php
/** * Generate a simple map with a location pointer. * * @param string $location * Location to use (for example the address). * @param string $country * Name of the country to use. * * @return string * The rendered map. */
function mysimplemap_map_create($location, $country) { $map = ''; // Join the address parts to something geocoder / google maps understands. $address = sprintf('%s, %s', $location, $country); // Try to create a geographic point out of the given location values. if ($geo_point = geocoder('google', $address)) { // Create a JSON equivalent to the point. $geo_json = $geo_point->out('json'); // Get map implementation provided by http://drupal.org/project/leaflet_googlemaps. $map = leaflet_map_get_info('google-maps-roadmap'); // Set initial zoom level. $map['settings']['zoom'] = 16; // Decode the JSON string. $geo_data = json_decode($geo_json); // Create settings for the map. $map_features = array( array( 'type' => 'point', 'lon' => $geo_data->coordinates[0], 'lat' => $geo_data->coordinates[1], ), ); // Render the map with a fixed height of 250 pixels. $map = leaflet_render_map($map, $features, '250px'); } return $map;
}
?>
Easy, isn't it?
