Issue #1810148 by Matroskeen, tanc, ravi.shankar, AaronBauman, VladimirAus,...

Issue #1810148 by Matroskeen, tanc, ravi.shankar, AaronBauman, VladimirAus, jmickela, edurenye, hugronaphor, erikwebb, dawehner, Lendude, tim.plunkett, drupalninja, mohit_aghera, youfei.sun, Nick Hope, seanmrafferty, pyrello, interdruper, attisan, EclipseGc, Blanca.Esqueda: Grouped exposed taxonomy term filters do not work

core/modules/taxonomy/src/Plugin/views/filter/TaxonomyIndexTid.php

@@ -344,6 +344,12 @@ public function validateExposed(&$form, FormStateInterface $form_state) {
     }
 
     $identifier = $this->options['expose']['identifier'];
+    $input = $form_state->getValue($identifier);
+
+    if ($this->options['is_grouped'] && isset($this->options['group_info']['group_items'][$input])) {
+      $this->validated_exposed_input = $this->options['group_info']['group_items'][$input]['value'];
+      return;
+    }
 
     // We only validate if they've chosen the text field style.
     if ($this->options['type'] != 'textfield') {

core/modules/taxonomy/tests/modules/taxonomy_test_views/test_views/views.view.test_taxonomy_exposed_grouped_filter.yml

+langcode: en
+status: true
+dependencies:
+  config:
+    - node.type.article
+    - taxonomy.vocabulary.tags
+  module:
+    - node
+    - taxonomy
+    - user
+id: test_taxonomy_exposed_grouped_filter
+label: 'Test Taxonomy Exposed Grouped Filter'
+module: views
+description: ''
+tag: ''
+base_table: node_field_data
+base_field: nid
+display:
+  default:
+    display_plugin: default
+    id: default
+    display_title: Default
+    position: 0
+    display_options:
+      access:
+        type: perm
+        options:
+          perm: 'access content'
+      cache:
+        type: tag
+        options: {  }
+      query:
+        type: views_query
+        options:
+          disable_sql_rewrite: false
+          distinct: false
+          replica: false
+          query_comment: ''
+          query_tags: {  }
+      exposed_form:
+        type: basic
+        options:
+          submit_button: Apply
+          reset_button: false
+          reset_button_label: Reset
+          exposed_sorts_label: 'Sort by'
+          expose_sort_order: true
+          sort_asc_label: Asc
+          sort_desc_label: Desc
+      pager:
+        type: mini
+        options:
+          items_per_page: 10
+          offset: 0
+          id: 0
+          total_pages: null
+          expose:
+            items_per_page: false
+            items_per_page_label: 'Items per page'
+            items_per_page_options: '5, 10, 25, 50'
+            items_per_page_options_all: false
+            items_per_page_options_all_label: '- All -'
+            offset: false
+            offset_label: Offset
+          tags:
+            previous: ‹‹
+            next: ››
+      style:
+        type: default
+        options:
+          grouping: {  }
+          row_class: ''
+          default_row_class: true
+          uses_fields: false
+      row:
+        type: fields
+        options:
+          inline: {  }
+          separator: ''
+          hide_empty: false
+          default_field_elements: true
+      fields:
+        title:
+          id: title
+          table: node_field_data
+          field: title
+          entity_type: node
+          entity_field: title
+          label: ''
+          alter:
+            alter_text: false
+            make_link: false
+            absolute: false
+            trim: false
+            word_boundary: false
+            ellipsis: false
+            strip_tags: false
+            html: false
+          hide_empty: false
+          empty_zero: false
+          settings:
+            link_to_entity: true
+          plugin_id: field
+          relationship: none
+          group_type: group
+          admin_label: ''
+          exclude: false
+          element_type: ''
+          element_class: ''
+          element_label_type: ''
+          element_label_class: ''
+          element_label_colon: true
+          element_wrapper_type: ''
+          element_wrapper_class: ''
+          element_default_classes: true
+          empty: ''
+          hide_alter_empty: true
+          click_sort_column: value
+          type: string
+          group_column: value
+          group_columns: {  }
+          group_rows: true
+          delta_limit: 0
+          delta_offset: 0
+          delta_reversed: false
+          delta_first_last: false
+          multi_type: separator
+          separator: ', '
+          field_api_classes: false
+      filters:
+        status:
+          value: '1'
+          table: node_field_data
+          field: status
+          plugin_id: boolean
+          entity_type: node
+          entity_field: status
+          id: status
+          expose:
+            operator: ''
+            operator_limit_selection: false
+            operator_list: {  }
+          group: 1
+        type:
+          id: type
+          table: node_field_data
+          field: type
+          value:
+            article: article
+          entity_type: node
+          entity_field: type
+          plugin_id: bundle
+          expose:
+            operator_limit_selection: false
+            operator_list: {  }
+        field_views_testing_tags_target_id:
+          id: field_views_testing_tags_target_id
+          table: node__field_views_testing_tags
+          field: field_views_testing_tags_target_id
+          relationship: none
+          group_type: group
+          admin_label: ''
+          operator: or
+          value: {  }
+          group: 1
+          exposed: true
+          expose:
+            operator_id: field_views_testing_tags_target_id_op
+            label: 'views_testing_tags (field_views_testing_tags)'
+            description: null
+            use_operator: false
+            operator: field_views_testing_tags_target_id_op
+            operator_limit_selection: false
+            operator_list: {  }
+            identifier: field_views_testing_tags_target_id
+            required: false
+            remember: false
+            multiple: false
+            remember_roles:
+              authenticated: authenticated
+            reduce: false
+          is_grouped: true
+          group_info:
+            label: 'views_testing_tags (field_views_testing_tags)'
+            description: ''
+            identifier: field_views_testing_tags_target_id
+            optional: true
+            widget: radios
+            multiple: false
+            remember: false
+            default_group: All
+            default_group_multiple: {  }
+            group_items:
+              1:
+                title: 'Group 1'
+                operator: or
+                value:
+                  1: '1'
+                  2: '2'
+              2:
+                title: 'Group 2'
+                operator: or
+                value:
+                  3: '3'
+                  4: '4'
+              3:
+                title: 'Group 3'
+                operator: or
+                value:
+                  1: '1'
+                  5: '5'
+          reduce_duplicates: false
+          type: select
+          limit: true
+          vid: tags
+          hierarchy: false
+          error_message: true
+          plugin_id: taxonomy_index_tid
+      sorts:
+        created:
+          id: created
+          table: node_field_data
+          field: created
+          order: DESC
+          entity_type: node
+          entity_field: created
+          plugin_id: date
+          relationship: none
+          group_type: group
+          admin_label: ''
+          exposed: false
+          expose:
+            label: ''
+            field_identifier: ''
+          granularity: second
+      header: {  }
+      footer: {  }
+      empty: {  }
+      relationships: {  }
+      arguments: {  }
+      display_extenders: {  }
+    cache_metadata:
+      max-age: -1
+      contexts:
+        - 'languages:language_content'
+        - 'languages:language_interface'
+        - url
+        - url.query_args
+        - user
+        - 'user.node_grants:view'
+        - user.permissions
+      tags: {  }
+  page_1:
+    display_plugin: page
+    id: page_1
+    display_title: Page
+    position: 1
+    display_options:
+      display_extenders: {  }
+      path: test-taxonomy-exposed-grouped-filter
+    cache_metadata:
+      max-age: -1
+      contexts:
+        - 'languages:language_content'
+        - 'languages:language_interface'
+        - url
+        - url.query_args
+        - user
+        - 'user.node_grants:view'
+        - user.permissions
+      tags: {  }

core/modules/taxonomy/tests/src/Functional/Views/TaxonomyIndexTidUiTest.php

@@ -24,7 +24,11 @@ class TaxonomyIndexTidUiTest extends UITestBase {
    *
    * @var array
    */
-  public static $testViews = ['test_filter_taxonomy_index_tid', 'test_taxonomy_term_name'];
+  public static $testViews = [
+    'test_filter_taxonomy_index_tid',
+    'test_taxonomy_term_name',
+    'test_taxonomy_exposed_grouped_filter',
+  ];
 
   /**
    * {@inheritdoc}
@@ -230,6 +234,50 @@ public function testExposedFilter() {
     $this->assertSession()->elementNotExists('xpath', "//div[@class='view-content']");
   }
 
+  /**
+   * Tests exposed grouped taxonomy filters.
+   */
+  public function testExposedGroupedFilter() {
+    // Create a content type with a taxonomy field.
+    $this->drupalCreateContentType(['type' => 'article']);
+    $field_name = 'field_views_testing_tags';
+    $this->createEntityReferenceField('node', 'article', $field_name, NULL, 'taxonomy_term');
+
+    $nodes = [];
+    for ($i = 0; $i < 3; $i++) {
+      $node = [];
+      $node['type'] = 'article';
+      $node['field_views_testing_tags'][0]['target_id'] = $this->terms[$i][0]->id();
+      $nodes[] = $this->drupalCreateNode($node);
+    }
+
+    $this->drupalGet('/admin/structure/views/nojs/handler/test_taxonomy_exposed_grouped_filter/page_1/filter/field_views_testing_tags_target_id');
+    $edit = [
+      'options[group_info][group_items][1][value][]' => [$this->terms[0][0]->id(), $this->terms[1][0]->id()],
+      'options[group_info][group_items][2][value][]' => [$this->terms[1][0]->id(), $this->terms[2][0]->id()],
+      'options[group_info][group_items][3][value][]' => [$this->terms[2][0]->id(), $this->terms[0][0]->id()],
+    ];
+    $this->submitForm($edit, 'Apply');
+    $this->submitForm([], 'Save');
+
+    // Visit the view's page url and validate the results.
+    $this->drupalGet('/test-taxonomy-exposed-grouped-filter');
+    $this->submitForm(['field_views_testing_tags_target_id' => 1], 'Apply');
+    $this->assertSession()->pageTextContains($nodes[0]->getTitle());
+    $this->assertSession()->pageTextContains($nodes[1]->getTitle());
+    $this->assertSession()->pageTextNotContains($nodes[2]->getTitle());
+
+    $this->submitForm(['field_views_testing_tags_target_id' => 2], 'Apply');
+    $this->assertSession()->pageTextContains($nodes[1]->getTitle());
+    $this->assertSession()->pageTextContains($nodes[2]->getTitle());
+    $this->assertSession()->pageTextNotContains($nodes[0]->getTitle());
+
+    $this->submitForm(['field_views_testing_tags_target_id' => 3], 'Apply');
+    $this->assertSession()->pageTextContains($nodes[0]->getTitle());
+    $this->assertSession()->pageTextContains($nodes[2]->getTitle());
+    $this->assertSession()->pageTextNotContains($nodes[1]->getTitle());
+  }
+
   /**
    * Tests that an exposed taxonomy filter doesn't show unpublished terms.
    */