Enable namespace support for GridFieldAddNewMultiClass

code/GridFieldAddNewMultiClass.php

@@ -122,7 +122,12 @@ class GridFieldAddNewMultiClass implements GridField_HTMLProvider, GridField_URL
 			}
 		}
 
-		return $result;
+		$sanitised = array();
+		foreach($result as $class=>$title) {
+		    $sanitised[$this->sanitiseClassName($class)] = $title;
+        }
+
+		return $sanitised;
 	}
 
 	/**
@@ -168,8 +173,9 @@ class GridFieldAddNewMultiClass implements GridField_HTMLProvider, GridField_URL
 			throw new SS_HTTPResponse_Exception(400);
 		}
 
+		$unsanitisedClass = $this->unsanitiseClassName($class);
 		$handler = Object::create($this->itemRequestClass,
-			$grid, $component, new $class(), $grid->getForm()->getController(), 'add-multi-class'
+			$grid, $component, new $unsanitisedClass(), $grid->getForm()->getController(), 'add-multi-class'
 		);
 		$handler->setTemplate($component->getTemplate());
 
@@ -219,4 +225,20 @@ class GridFieldAddNewMultiClass implements GridField_HTMLProvider, GridField_URL
 	  $this->itemRequestClass = $class;
 	  return $this;
 	}
+
+    /**
+     * Sanitise a model class' name for inclusion in a link
+     * @return string
+     */
+    protected function sanitiseClassName($class) {
+        return str_replace('\\', '-', $class);
+    }
+
+    /**
+     * Unsanitise a model class' name from a URL param
+     * @return string
+     */
+    protected function unsanitiseClassName($class) {
+        return str_replace('-', '\\', $class);
+    }
 }

tests/GridFieldAddNewMultiClassWithNamespacesTest.php

@@ -0,0 +1,60 @@
+<?php
+
+namespace SilverStripeAustralia\Test;
+
+use SapphireTest;
+use SS_HTTPRequest;
+use Form, Controller, FieldList;
+use GridField, GridFieldDetailForm, GridFieldAddNewMultiClass;
+
+class GridFieldAddNewMultiClassWithNamespacesTest extends SapphireTest {
+
+	public function testGetClassesWithNamespaces() {
+		$grid = new GridField('TestGridField');
+		$grid->setModelClass('SilverStripeAustralia\\Test\\NamespacedClass');
+
+		$component = new GridFieldAddNewMultiClass();
+
+		$this->assertEquals(
+			array(
+				'SilverStripeAustralia-Test-NamespacedClass' => 'NamespacedClass'
+			),
+			$component->getClasses($grid),
+			'Namespaced classes are sanitised'
+		);
+	}
+
+	public function testHandleAddWithNamespaces() {
+		$grid = new GridField('TestGridField');
+		$grid->getConfig()->addComponent(new GridFieldDetailForm());
+		$grid->setModelClass('SilverStripeAustralia\\Test\\NamespacedClass');
+		$grid->setForm(Form::create('test', Controller::create(), FieldList::create(), FieldList::create()));
+
+		$request = new SS_HTTPRequest('POST', 'test');
+		$request->setRouteParams(array('ClassName' => 'SilverStripeAustralia-Test-NamespacedClass'));
+
+		$component = new GridFieldAddNewMultiClass();
+		$response = $component->handleAdd($grid, $request);
+
+		$record = new \ReflectionProperty('GridFieldAddNewMultiClassHandler', 'record');
+		$record->setAccessible(true);
+		$this->assertInstanceOf('SilverStripeAustralia\\Test\\NamespacedClass', $record->getValue($response));
+	}
+
+}
+
+/**#@+
+ * @ignore
+ */
+
+class NamespacedClass {
+	public function i18n_singular_name() {
+		return 'NamespacedClass';
+	}
+
+	public function canCreate() {
+		return true;
+	}
+}
+
+/**#@-*/