REFACTOR Locator - getTrigger (#220)

* REFACTOR Locator - getTrigger

Check if any GET vars exist, or if static $db ResultsOnLoad is true. If so, display results.

closes #219

* travis tweak

* phpcs

Author: jsirish

src/pages/Locator.php

@@ -4,6 +4,7 @@
 
 use Dynamic\SilverStripeGeocoder\AddressDataExtension;
 use SilverStripe\Core\Manifest\ModuleResourceLoader;
+use SilverStripe\Forms\CheckboxField;
 use SilverStripe\Forms\FieldList;
 use SilverStripe\Forms\GridField\GridFieldAddExistingAutocompleter;
 use SilverStripe\Forms\HeaderField;
@@ -46,6 +47,7 @@ class Locator extends \Page
      */
     private static $db = array(
         'Unit' => 'Enum("m,km","m")',
+        'ResultsOnLoad' => 'Boolean',
     );
 
     /**
@@ -55,6 +57,13 @@ class Locator extends \Page
         'Categories' => LocationCategory::class,
     );
 
+    /**
+     * @var array
+     */
+    private static $defaults = [
+        'ResultsOnLoad' => 0,
+    ];
+
     /**
      * @var string
      */
@@ -75,6 +84,10 @@ public function getCMSFields()
             $fields->addFieldsToTab('Root.Settings', array(
                 HeaderField::create('DisplayOptions', 'Display Options', 3),
                 OptionsetField::create('Unit', 'Unit of measure', array('m' => 'Miles', 'km' => 'Kilometers')),
+                CheckboxField::create('ResultsOnLoad', 'Show results on page load')
+                    ->setDescription('For larger collections of locations, it is
+                        recommended to only show a limited amount of results after a location
+                        search.')
             ));
 
             // Filter categories

src/pages/LocatorController.php

@@ -65,13 +65,6 @@ class LocatorController extends \PageController
      */
     private static $list_container = 'loc-list';
 
-    /**
-     * GET variable which, if isset, will trigger storeLocator init and return XML
-     *
-     * @var string
-     */
-    private static $query_trigger = 'action_doFilterLocations';
-
     /**
      * @var DataList|ArrayList
      */
@@ -186,9 +179,7 @@ public function getTrigger(HTTPRequest $request = null)
         if ($request === null) {
             $request = $this->getRequest();
         }
-        $trigger = $request->getVar(Config::inst()->get(LocatorController::class, 'query_trigger'));
-
-        return isset($trigger);
+        return !empty($this->getRequest()->getVars()) || $this->data()->ResultsOnLoad;
     }
 
     /**