Geocoding Field

A Symphony CMS extension that populates fields with geocoding information using the combined values of other fields.

Installation

1. Upload the 'geocodingfield' folder in this archive to your Symphony 'extensions' folder.
2. Enable it by selecting the "Field: Geocoding", choose Enable from the with-selected menu, then click Apply.
3. You can now add the "Geocoding" field to your sections.

Configuration

In the field settings you define an XPath to create a new value from the XML data of other fields which then gets geocoded.

For example, if you have a section with two fields "Country" and "City", you could use the Geocoding Field to get the location by setting its expression to {entry/country}, {entry/city}.

Data Source Filtering

The field provides a single syntax for radius-based searches. Use the following as a DS filter:

within DISTANCE UNIT of ORIGIN

• DISTANCE is an integer
• UNIT is the distance unit: km, mile or miles
• ORIGIN is the centre of the radius. Accepts either a latitude/longitude pair or an address

Examples:

within 20 km of 10.545,-103.1
within 1km of 1 West Street, Burleigh Heads, Australia
within 500 miles of London

To make the filters dynamic, use the parameter syntax like any other filter. For example using querystring parameters:

within {$url-distance} {$url-unit} of {$url-origin}

Attached to a page invoked as:

/?distance=30&unit=km&origin=London,England

Data Source XML result

The XML output of the field looks like this:

<location latitude="51.6614" longitude="-0.40042"/>

The two attributes are the latitude/longitude of the location.

If you are filtering using the Geocoding Field using a "within" filter then you will see an additional <distance> element:

<location latitude="51.6614" longitude="-0.40042">
    <distance from="51.6245572,-0.4674079" distance="3.8" unit="miles" />
</location>

The from attribute is the latitude/longitude resolved from the DS filter (the origin), the unit shows either "km" or "miles" depending on what you use in your filter, and distance is the distance between your map marker and the origin.

Credits

This extensions is heavily based on the Reflection Field and the Map Location Field.