You can install this plugin into your CakePHP application using composer.

composer require mixable/cakephp-locatable

To enable the plugin, just load the plugin using bin/cake:

bin/cake plugin load Locatable

The migrations of this plugin provide the required database structure.

bin/cake migrations migrate -p Locatable

To use the plugin, simply add the Locatable behavior to your table.

$this->addBehavior('Locatable.Locatable');

This will add a hasOne Cocrdinates association to your model.

The associated data is available as Coordinate entity and can be accessed at:

$model->coordinate->latitude;
$model->coordinate->longitude;

Saving the hasOne data is done in the known way of saving associated data. In your view just use the Form helper:

$this->Form->control('coordinate.latitude');
$this->Form->control('coordinate.longitude');