FieldtypeMapMarker Module for ProcessWire

This Fieldtype for ProcessWire holds an address or location name, and automatically geocodes the address to latitude/longitude using Google Maps API. The resulting values may be used to populate any kind of map (whether Google Maps or another).

This Fieldtype was created to serve as an example of creating a custom Fieldtype and Inputfield that contains multiple pieces of data. Though the Fieldtype has now gone far beyond that and is relatively full featured. As a result, it may no longer be the simplest example of how to implement a Fieldtype/Inputfield, though it is very effective and useful.

MapMarker also has a corresponding Inputfield and Markup module, named InputfieldMapMarker and MarkupGoogleMap. When you install FieldtypeMapMarker, the Inputfield will also be installed and used for input on the admin side. Installation of MarkupGoogleMap is optional. It provides a simple way to render Google maps with the data managed by FieldtypeMapMarker.

This Fieldtype has a support forum

Using Map Marker

How to install

1. Copy all of the files for this module into /site/modules/FieldtypeMapMarker/

2. In your admin, go to the Modules screen and "check for new modules." Click install for the Map Marker Fieldtype.

3. In your admin, go to Setup > Fields > Add New Field. Choose MapMarker as the type. If you are not sure what to name your field, simply "map" is a good one! Once created, configure the settings on the input tab.

4. Add your new "map" field to one or more templates, as you would any other field.

How to use from the page editor

1. Create or edit a page using one of the templates you added the "map" field to.

2. Type in a location or address into the "address" box for the map field. Then click outside of the address, and the Javascript geocoder should automatically populate the latitude, longitude and map location. The Google geocoder will accept full addresses or known location names. For instance, you could type in "Disney Land" and it knows how to find locations like that.

3. The geocoding also works in reverse. You may drag the map marker wherever you want and it will populate the address field for you. You may also populate the latitude, longitude and zoom fields manually if you like. Unchecking the box between address and latitude disables the geocoder.

How to use from the API, in your template files

In your template files, you can utilize this data for your own Google Maps (or anything else that you might need latitude/longitude for).

Lets assume that your field is called 'map'. Here is how you would access the components of it from the API:

echo $page->map->address;	// outputs the address you entered
echo $page->map->lat; 		// outputs the latitude
echo $page->map->lng; 		// outputs the longitude
echo $page->map->zoom;		// outputs the zoom level

Markup Google Map

This package also comes with a module called MarkupGoogleMap. It provides a simple means of outputting a Google Map based on the data managed by FieldtypeMapMarker. To install, simply click "install" for the Google Maps (Markup) module. This is a Markup module, meaning it exists primarily to generate markup for output on the front-end of your site.

How to use

Add this somewhere before your closing </head> tag:

<script type='text/javascript' src='https://maps.googleapis.com/maps/api/js?sensor=false'></script>

In the location where you want to output your map, place the following in your template file:

$map = $modules->get('MarkupGoogleMap'); 
echo $map->render($page, 'map'); 

In the above, $page is the Page object that has the 'map' field. Replace 'map' with the name of your map field.

To render a map with multiple markers on it, specify a PageArray rather than a single $page:

$items = $pages->find("template=something, map!='', sort=title"); 
$map = $modules->get('MarkupGoogleMap');
echo $map->render($items, 'map'); 

To specify options, provide a 3rd argument with an options array:

$map = $modules->get('MarkupGoogleMap'); 
echo $map->render($items, 'map', array('height' => '500px')); 

Options

Here is a list of all possible options (with defaults shown):

width
Width of the map (type: string; default: 100%).

height
Height of the map (type: string; default: 300px)

zoom
Zoom level 1-25 (type: integer; default: from your field settings)

type
Map type: ROADMAP, HYBRID or SATELLITE (type: string; default: from your field settings)

id
Map ID attribute (type: string; default: mgmap)

class
Map class attribute (type: string; default: MarkupGoogleMap)

lat
Map center latitude (type: string|float; default: from your field settings)

lng
Map center longitude (type: string|float; default: from your field settings)

useStyles
Whether to populate inline styles to the map div for width/height (type: boolean; default: true). Set to false only if you will style the map div yourself.

useMarkerSettings
Makes single-marker map use marker settings rather than map settings (type: boolean; default: true).

markerLinkField
Page field to use for the marker link, or blank to not link (type: string; default: url).

markerTitleField
Page field to use for the marker title, or blank not to use a marker title (type: string; default: title).

fitToMarkers
When multiple markers are present, set map to automatically adjust to fit to the given markers (type: boolean; default: true).