smindel / silverstripe-gis

src/Forms/GridFieldMap.php

<?php

namespace Smindel\GIS\Forms;

use SilverStripe\Core\Config\Configurable;
use SilverStripe\Forms\GridField\GridField;
use SilverStripe\Forms\GridField\GridField_HTMLProvider;
use SilverStripe\Forms\GridField\GridField_DataManipulator;
use SilverStripe\View\Requirements;
use SilverStripe\Core\Injector\Injectable;
use SilverStripe\Core\Config\Config;
use SilverStripe\ORM\SS_List;
use Smindel\GIS\GIS;
use proj4php\Proj4php;
use proj4php\Proj;
use proj4php\Point;

/**
 * GridFieldPaginator paginates the {@link GridField} list and adds controls
 * to the bottom of the {@link GridField}.
 */
class GridFieldMap implements GridField_HTMLProvider, GridField_DataManipulator
{
    use Injectable;

    use Configurable;

    protected $attribute;

    public function __construct($attribute = null)
    {
        $this->attribute = $attribute;
    }

    /**
     *
     * @param GridField $gridField
     * @return array
     */
    public function getHTMLFragments($gridField)
    {
        $srid = GIS::config()->default_srid;
        $proj = GIS::config()->projections[$srid];

        Requirements::javascript('smindel/silverstripe-gis: client/dist/js/leaflet.js');
        Requirements::javascript('smindel/silverstripe-gis: client/dist/js/leaflet.markercluster.js');
        Requirements::javascript('smindel/silverstripe-gis: client/dist/js/leaflet-search.js');
        Requirements::javascript('smindel/silverstripe-gis: client/dist/js/proj4.js');
        Requirements::customScript(sprintf('proj4.defs("EPSG:%s", "%s");', $srid, $proj), 'EPSG:' . $srid);
        Requirements::javascript('smindel/silverstripe-gis: client/dist/js/GridFieldMap.js');
        Requirements::css('smindel/silverstripe-gis: client/dist/css/leaflet.css');
        Requirements::css('smindel/silverstripe-gis: client/dist/css/MarkerCluster.css');
        Requirements::css('smindel/silverstripe-gis: client/dist/css/MarkerCluster.Default.css');
        Requirements::css('smindel/silverstripe-gis: client/dist/css/leaflet-search.css');

        $defaultLocation = Config::inst()->get(MapField::class, 'default_location');

        return array(
            'before' => sprintf(
                '<div class="grid-field-map" data-map-center="%s" data-list="%s" style="z-index:0;"></div>',
                GIS::create([$defaultLocation['lon'], $defaultLocation['lat']]),
                htmlentities(
                    self::get_geojson_from_list(
                        $gridField->getList(),
                        $this->attribute ?: GIS::of($gridField->getList()->dataClass())

The method dataClass() does not exist on SilverStripe\ORM\SS_List. It seems like you code against a sub-type of said class. However, the method does not exist in SilverStripe\ORM\Sortable or SilverStripe\ORM\Filterable or SilverStripe\ORM\Relation or SilverStripe\ORM\Limitable or SilverStripe\ORM\Relation or SilverStripe\ORM\Relation or SilverStripe\ORM\Relation. Are you sure you never get one of those?

                    ),
                    ENT_QUOTES,
                    'UTF-8'
                )
            ),
        );
    }

    public static function get_geojson_from_list($list, $geometryField = null)
    {
        $modelClass = $list->dataClass();

        $geometryField = $geometryField ?: GIS::of($modelClass);

        $collection = [];

        foreach ($list as $item) {
            if (!$item->canView()) {
                continue;
            }

            $geo = GIS::create($item->$geometryField)->reproject(4326);

            $collection[$item->ID] = [
                $item->Title,
                $geo->type,
                $geo->coordinates,
            ];
        }

        return json_encode($collection);
    }

    /**
     * Manipulate the {@link DataList} as needed by this grid modifier.
     *
     * @param GridField $gridField
     * @param SS_List $dataList
     * @return \SilverStripe\ORM\DataList
     */
    public function getManipulatedData(GridField $gridField, SS_List $dataList)
    {
        return $dataList;
    }
}