diff --git a/core/modules/field/tests/src/Kernel/EntityReference/Views/EntityReferenceRelationshipTest.php b/core/modules/field/tests/src/Kernel/EntityReference/Views/EntityReferenceRelationshipTest.php
index 5dc096f651c01d73d8590a5cb78d8b86a0afe164..d18d9f30bce3a35a33da5f8e48cfdea41d0329b7 100644
--- a/core/modules/field/tests/src/Kernel/EntityReference/Views/EntityReferenceRelationshipTest.php
+++ b/core/modules/field/tests/src/Kernel/EntityReference/Views/EntityReferenceRelationshipTest.php
@@ -3,6 +3,7 @@
namespace Drupal\Tests\field\Kernel\EntityReference\Views;
use Drupal\entity_test\Entity\EntityTestMulChanged;
+use Drupal\field\Entity\FieldStorageConfig;
use Drupal\field\Tests\EntityReference\EntityReferenceTestTrait;
use Drupal\entity_test\Entity\EntityTest;
use Drupal\entity_test\Entity\EntityTestMul;
@@ -32,6 +33,7 @@ class EntityReferenceRelationshipTest extends ViewsKernelTestBase {
'test_entity_reference_reverse_entity_test_view',
'test_entity_reference_entity_test_mul_view',
'test_entity_reference_reverse_entity_test_mul_view',
+ 'test_entity_reference_group_by_empty_relationships',
);
/**
@@ -71,6 +73,9 @@ protected function setUp($import_test_views = TRUE) {
// @see \Drupal\Core\Entity\Sql\DefaultTableMapping::generateFieldTableName()
$this->createEntityReferenceField('entity_test_mul_changed', 'entity_test_mul_changed', 'field_test_data_with_a_long_name', 'field_test_data_with_a_long_name', 'entity_test');
+ // Create reference from entity_test_mul to entity_test cardinality: infinite.
+ $this->createEntityReferenceField('entity_test_mul', 'entity_test_mul', 'field_data_test_unlimited', 'field_data_test_unlimited', 'entity_test', 'default', array(), FieldStorageConfig::CARDINALITY_UNLIMITED);
+
ViewTestData::createTestViews(get_class($this), array('entity_reference_test_views'));
}
@@ -276,4 +281,56 @@ public function testDataTableRelationshipWithLongFieldName() {
}
}
+ /**
+ * Tests group by with optional and empty relationship.
+ */
+ public function testGroupByWithEmptyRelationships() {
+ $entities = [];
+ // Create 4 entities with name1 and 3 entities with name2.
+ for ($i = 1; $i <= 4; $i++) {
+ $entity = [
+ 'name' => 'name' . $i,
+ ];
+ $entity = EntityTest::create($entity);
+ $entities[] = $entity;
+ $entity->save();
+ }
+
+ $entity = EntityTestMul::create([
+ 'name' => 'name1',
+ ]);
+ $entity->field_data_test_unlimited = [
+ ['target_id' => $entities[0]->id()],
+ ['target_id' => $entities[1]->id()],
+ ['target_id' => $entities[2]->id()],
+ ];
+ $entity->save();
+
+ $entity = EntityTestMul::create([
+ 'name' => 'name2',
+ ]);
+ $entity->field_data_test_unlimited = [
+ ['target_id' => $entities[0]->id()],
+ ['target_id' => $entities[1]->id()],
+ ];
+ $entity->save();
+
+ $entity = EntityTestMul::create([
+ 'name' => 'name3',
+ ]);
+ $entity->field_data_test_unlimited->target_id = $entities[0]->id();
+ $entity->save();
+
+ $view = Views::getView('test_entity_reference_group_by_empty_relationships');
+ $this->executeView($view);
+ $this->assertCount(4, $view->result);
+ // First three results should contain a reference from EntityTestMul.
+ $this->assertNotEmpty($view->getStyle()->getField(0, 'name_2'));
+ $this->assertNotEmpty($view->getStyle()->getField(1, 'name_2'));
+ $this->assertNotEmpty($view->getStyle()->getField(2, 'name_2'));
+ // Fourth result has no reference from EntityTestMul hence the output for
+ // should be empty.
+ $this->assertEqual('', $view->getStyle()->getField(3, 'name_2'));
+ }
+
}
diff --git a/core/modules/system/tests/modules/entity_reference_test_views/test_views/views.view.test_entity_reference_group_by_empty_relationships.yml b/core/modules/system/tests/modules/entity_reference_test_views/test_views/views.view.test_entity_reference_group_by_empty_relationships.yml
new file mode 100644
index 0000000000000000000000000000000000000000..5c9352412a86e9a29401932e67fb4ef7c25c018c
--- /dev/null
+++ b/core/modules/system/tests/modules/entity_reference_test_views/test_views/views.view.test_entity_reference_group_by_empty_relationships.yml
@@ -0,0 +1,128 @@
+langcode: en
+status: true
+dependencies: { }
+id: test_entity_reference_group_by_empty_relationships
+label: ''
+module: views
+description: ''
+tag: ''
+base_table: entity_test
+base_field: id
+core: '8'
+display:
+ default:
+ display_options:
+ access:
+ type: none
+ cache:
+ type: tag
+ exposed_form:
+ type: basic
+ query:
+ type: views_query
+ options:
+ disable_sql_rewrite: false
+ distinct: false
+ replica: false
+ query_comment: ''
+ query_tags: { }
+ fields:
+ name_1:
+ id: name_1
+ table: entity_test
+ field: name
+ entity_type: entity_test
+ entity_field: name
+ plugin_id: field
+ relationship: none
+ group_type: group
+ group_column: value
+ group_columns: { }
+ group_rows: true
+ exclude: false
+ delta_limit: 0
+ delta_offset: 0
+ delta_reversed: false
+ delta_first_last: false
+ multi_type: separator
+ name_2:
+ id: name_2
+ table: entity_test_mul_property_data
+ field: name
+ entity_type: entity_test_mul
+ entity_field: name
+ plugin_id: field
+ relationship: reverse__entity_test_mul__field_data_test_unlimited
+ group_type: group
+ group_column: entity_id
+ group_columns: { }
+ group_rows: false
+ exclude: false
+ delta_limit: 0
+ delta_offset: 0
+ delta_reversed: false
+ delta_first_last: false
+ multi_type: separator
+ sorts:
+ name:
+ table: entity_test
+ field: name
+ id: name
+ entity_type: entity_test
+ entity_field: field_test
+ order: ASC
+ plugin_id: standard
+ pager:
+ type: some
+ style:
+ type: table
+ options:
+ grouping: { }
+ row_class: ''
+ default_row_class: true
+ override: true
+ sticky: false
+ caption: ''
+ summary: ''
+ description: ''
+ columns:
+ name_1: name_1
+ name_2: name_2
+ info:
+ name_1:
+ sortable: false
+ default_sort_order: asc
+ align: ''
+ separator: ''
+ empty_column: false
+ responsive: ''
+ name_2:
+ sortable: false
+ default_sort_order: asc
+ align: ''
+ separator: ''
+ empty_column: false
+ responsive: ''
+ default: '-1'
+ empty_table: false
+ row:
+ type: fields
+ options:
+ inline: { }
+ separator: ''
+ hide_empty: false
+ default_field_elements: true
+ relationships:
+ reverse__entity_test_mul__field_data_test_unlimited:
+ id: reverse__entity_test_mul__field_data_test_unlimited
+ table: entity_test
+ field: reverse__entity_test_mul__field_data_test_unlimited
+ entity_type: entity_test
+ plugin_id: entity_reverse
+ group_type: group
+ required: false
+ group_by: true
+ display_plugin: block
+ display_title: Master
+ id: default
+ position: 0
diff --git a/core/modules/views/src/Plugin/views/field/EntityField.php b/core/modules/views/src/Plugin/views/field/EntityField.php
index 4c8032d3eb5f2415a3c4b0f0529089e9d48be118..dfabda3a3f93be764602285fcf730a7bedd3186f 100644
--- a/core/modules/views/src/Plugin/views/field/EntityField.php
+++ b/core/modules/views/src/Plugin/views/field/EntityField.php
@@ -818,10 +818,17 @@ public function getItems(ResultRow $values) {
'settings' => $this->options['settings'],
'label' => 'hidden',
];
- // Some bundles might not have a specific field, in which case the faked
- // entity doesn't have it either.
- $entity = $this->createEntityForGroupBy($this->getEntity($values), $values);
- $build_list = isset($entity->{$this->definition['field_name']}) ? $entity->{$this->definition['field_name']}->view($display) : NULL;
+ // Optional relationships may not provide an entity at all. So we can't
+ // use createEntityForGroupBy() for those rows.
+ if ($entity = $this->getEntity($values)) {
+ $entity = $this->createEntityForGroupBy($entity, $values);
+ // Some bundles might not have a specific field, in which case the faked
+ // entity doesn't have it either.
+ $build_list = isset($entity->{$this->definition['field_name']}) ? $entity->{$this->definition['field_name']}->view($display) : NULL;
+ }
+ else {
+ $build_list = NULL;
+ }
}
if (!$build_list) {