feat: Add group by to collection view (Issue 3614) (#4486)

cypress/integration/view_filters_spec.js

@@ -1,10 +1,11 @@
 import { login } from '../utils/steps';
 
 const filter = term => {
-  cy.get('[class*=FilterButton]').click();
+  cy.contains('span', 'Filter by').click();
   cy.contains(term).click();
   cy.contains('Contents').click();
 };
+
 const assertEntriesCount = count => {
   cy.get('[class*=ListCardLink]').should('have.length', count);
 };

cypress/integration/view_groups_spec.js

@@ -0,0 +1,71 @@
+import { login } from '../utils/steps';
+
+const group = term => {
+  cy.contains('span', 'Group by').click();
+  cy.contains(term).click();
+  cy.contains('Contents').click();
+};
+
+const assertGroupsCount = count => {
+  cy.get('[class*=GroupContainer]').should('have.length', count);
+};
+
+const assertEachGroupCount = (id, count) => {
+  cy.get(`[id='${id}']`).within(() => {
+    assertEntriesCount(count);
+  });
+};
+
+const assertEntriesCount = count => {
+  cy.get('[class*=ListCardLink]').should('have.length', count);
+};
+
+const assertInEntries = text => {
+  cy.get('[class*=ListCardLink]').within(() => {
+    cy.contains('h2', text);
+  });
+};
+
+describe('View Group', () => {
+  before(() => {
+    Cypress.config('defaultCommandTimeout', 4000);
+    cy.task('setupBackend', { backend: 'test' });
+  });
+
+  after(() => {
+    cy.task('teardownBackend', { backend: 'test' });
+  });
+
+  beforeEach(() => {
+    login();
+  });
+
+  it('can apply string group', () => {
+    // enable group
+    group('Year');
+
+    assertGroupsCount(2);
+    assertEachGroupCount('Year2020', 20);
+    assertEachGroupCount('Year2015', 3);
+
+    //disable group
+    group('Year');
+
+    assertEntriesCount(23);
+    for (let i = 1; i <= 20; i++) {
+      assertInEntries(`This is post # ${i} --`);
+    }
+    assertInEntries('This is a YAML front matter post');
+    assertInEntries('This is a JSON front matter post');
+    assertInEntries('This is a TOML front matter post');
+
+    //enable group
+    group('Drafts');
+
+    assertEntriesCount(23);
+    assertGroupsCount(3);
+    assertEachGroupCount('Draftstrue', 10);
+    assertEachGroupCount('Draftsfalse', 10);
+    assertEachGroupCount('missing_value', 3);
+  });
+});

dev-test/backends/test/config.yml

@@ -27,6 +27,12 @@ collections: # A list of collections the CMS should be able to edit
       - label: Drafts
         field: draft
         pattern: true
+    view_groups:
+      - label: Year
+        field: date
+        pattern: \d{4}
+      - label: Drafts
+        field: draft
     fields: # The fields each document in this collection have
       - { label: 'Title', name: 'title', widget: 'string', tagname: 'h1' }
       - { label: 'Draft', name: 'draft', widget: 'boolean', default: false }

dev-test/config.yml

@@ -27,6 +27,12 @@ collections: # A list of collections the CMS should be able to edit
       - label: Drafts
         field: draft
         pattern: true
+    view_groups:
+      - label: Year
+        field: date
+        pattern: \d{4}
+      - label: Drafts
+        field: draft
     fields: # The fields each document in this collection have
       - { label: 'Title', name: 'title', widget: 'string', tagname: 'h1' }
       - { label: 'Draft', name: 'draft', widget: 'boolean', default: false }

packages/netlify-cms-core/src/actions/__tests__/config.spec.js

@@ -528,6 +528,7 @@ describe('config', () => {
             meta: {},
             publish: true,
             view_filters: [],
+            view_groups: [],
           },
           {
             sortable_fields: [],
@@ -557,6 +558,7 @@ describe('config', () => {
             ],
             publish: true,
             view_filters: [],
+            view_groups: [],
           },
         ],
       });

packages/netlify-cms-core/src/actions/config.js

@@ -112,6 +112,19 @@ const throwOnMissingDefaultLocale = i18n => {
   }
 };
 
+const setViewPatternsDefaults = (key, collection) => {
+  if (!collection.has(key)) {
+    collection = collection.set(key, fromJS([]));
+  } else {
+    collection = collection.set(
+      key,
+      collection.get(key).map(v => v.set('id', `${v.get('field')}__${v.get('pattern')}`)),
+    );
+  }
+
+  return collection;
+};
+
 const defaults = {
   publish_mode: publishModes.SIMPLE,
 };
@@ -256,16 +269,8 @@ export function applyDefaults(config) {
             collection = collection.set('sortable_fields', fromJS(defaultSortable));
           }
 
-          if (!collection.has('view_filters')) {
+          collection = setViewPatternsDefaults('view_filters', collection);
-            collection = collection.set('view_filters', fromJS([]));
+          collection = setViewPatternsDefaults('view_groups', collection);
-          } else {
-            collection = collection.set(
-              'view_filters',
-              collection
-                .get('view_filters')
-                .map(v => v.set('id', `${v.get('field')}__${v.get('pattern')}`)),
-            );
-          }
 
           if (map.hasIn(['editor', 'preview']) && !collection.has('editor')) {
             collection = collection.setIn(['editor', 'preview'], map.getIn(['editor', 'preview']));

packages/netlify-cms-core/src/actions/entries.ts

@@ -20,6 +20,7 @@ import {
   EntryField,
   SortDirection,
   ViewFilter,
+  ViewGroup,
   Entry,
 } from '../types/redux';
 
@@ -54,6 +55,10 @@ export const FILTER_ENTRIES_REQUEST = 'FILTER_ENTRIES_REQUEST';
 export const FILTER_ENTRIES_SUCCESS = 'FILTER_ENTRIES_SUCCESS';
 export const FILTER_ENTRIES_FAILURE = 'FILTER_ENTRIES_FAILURE';
 
+export const GROUP_ENTRIES_REQUEST = 'GROUP_ENTRIES_REQUEST';
+export const GROUP_ENTRIES_SUCCESS = 'GROUP_ENTRIES_SUCCESS';
+export const GROUP_ENTRIES_FAILURE = 'GROUP_ENTRIES_FAILURE';
+
 export const DRAFT_CREATE_FROM_ENTRY = 'DRAFT_CREATE_FROM_ENTRY';
 export const DRAFT_CREATE_EMPTY = 'DRAFT_CREATE_EMPTY';
 export const DRAFT_DISCARD = 'DRAFT_DISCARD';
@@ -244,6 +249,44 @@ export function filterByField(collection: Collection, filter: ViewFilter) {
   };
 }
 
+export function groupByField(collection: Collection, group: ViewGroup) {
+  return async (dispatch: ThunkDispatch<State, {}, AnyAction>, getState: () => State) => {
+    const state = getState();
+    const isFetching = selectIsFetching(state.entries, collection.get('name'));
+    dispatch({
+      type: GROUP_ENTRIES_REQUEST,
+      payload: {
+        collection: collection.get('name'),
+        group,
+      },
+    });
+    if (isFetching) {
+      return;
+    }
+
+    try {
+      const entries = await getAllEntries(state, collection);
+      dispatch({
+        type: GROUP_ENTRIES_SUCCESS,
+        payload: {
+          collection: collection.get('name'),
+          group,
+          entries,
+        },
+      });
+    } catch (error) {
+      dispatch({
+        type: GROUP_ENTRIES_FAILURE,
+        payload: {
+          collection: collection.get('name'),
+          group,
+          error,
+        },
+      });
+    }
+  };
+}
+
 export function changeViewStyle(viewStyle: string) {
   return {
     type: CHANGE_VIEW_STYLE,

packages/netlify-cms-core/src/components/Collection/Collection.js

@@ -11,9 +11,18 @@ import CollectionTop from './CollectionTop';
 import EntriesCollection from './Entries/EntriesCollection';
 import EntriesSearch from './Entries/EntriesSearch';
 import CollectionControls from './CollectionControls';
-import { sortByField, filterByField, changeViewStyle } from '../../actions/entries';
+import { sortByField, filterByField, changeViewStyle, groupByField } from '../../actions/entries';
-import { selectSortableFields, selectViewFilters } from '../../reducers/collections';
+import {
-import { selectEntriesSort, selectEntriesFilter, selectViewStyle } from '../../reducers/entries';
+  selectSortableFields,
+  selectViewFilters,
+  selectViewGroups,
+} from '../../reducers/collections';
+import {
+  selectEntriesSort,
+  selectEntriesFilter,
+  selectEntriesGroup,
+  selectViewStyle,
+} from '../../reducers/entries';
 
 const CollectionContainer = styled.div`
   margin: ${lengths.pageMargin};
@@ -74,10 +83,13 @@ export class Collection extends React.Component {
       onSortClick,
       sort,
       viewFilters,
+      viewGroups,
       filterTerm,
       t,
       onFilterClick,
+      onGroupClick,
       filter,
+      group,
       onChangeViewStyle,
       viewStyle,
     } = this.props;
@@ -118,9 +130,12 @@ export class Collection extends React.Component {
                 onSortClick={onSortClick}
                 sort={sort}
                 viewFilters={viewFilters}
+                viewGroups={viewGroups}
                 t={t}
                 onFilterClick={onFilterClick}
+                onGroupClick={onGroupClick}
                 filter={filter}
+                group={group}
               />
             </>
           )}
@@ -139,7 +154,9 @@ function mapStateToProps(state, ownProps) {
   const sort = selectEntriesSort(state.entries, collection.get('name'));
   const sortableFields = selectSortableFields(collection, t);
   const viewFilters = selectViewFilters(collection);
+  const viewGroups = selectViewGroups(collection);
   const filter = selectEntriesFilter(state.entries, collection.get('name'));
+  const group = selectEntriesGroup(state.entries, collection.get('name'));
   const viewStyle = selectViewStyle(state.entries);
 
   return {
@@ -152,7 +169,9 @@ function mapStateToProps(state, ownProps) {
     sort,
     sortableFields,
     viewFilters,
+    viewGroups,
     filter,
+    group,
     viewStyle,
   };
 }
@@ -161,6 +180,7 @@ const mapDispatchToProps = {
   sortByField,
   filterByField,
   changeViewStyle,
+  groupByField,
 };
 
 const mergeProps = (stateProps, dispatchProps, ownProps) => {
@@ -170,6 +190,7 @@ const mergeProps = (stateProps, dispatchProps, ownProps) => {
     onSortClick: (key, direction) =>
       dispatchProps.sortByField(stateProps.collection, key, direction),
     onFilterClick: filter => dispatchProps.filterByField(stateProps.collection, filter),
+    onGroupClick: group => dispatchProps.groupByField(stateProps.collection, group),
     onChangeViewStyle: viewStyle => dispatchProps.changeViewStyle(viewStyle),
   };
 };

packages/netlify-cms-core/src/components/Collection/CollectionControls.js

@@ -4,6 +4,7 @@ import ViewStyleControl from './ViewStyleControl';
 import SortControl from './SortControl';
 import FilterControl from './FilterControl';
 import { lengths } from 'netlify-cms-ui-default';
+import GroupControl from './GroupControl';
 
 const CollectionControlsContainer = styled.div`
   display: flex;
@@ -25,13 +26,19 @@ const CollectionControls = ({
   onSortClick,
   sort,
   viewFilters,
+  viewGroups,
   onFilterClick,
+  onGroupClick,
   t,
   filter,
+  group,
 }) => {
   return (
     <CollectionControlsContainer>
       <ViewStyleControl viewStyle={viewStyle} onChangeViewStyle={onChangeViewStyle} />
+      {viewGroups.length > 0 && (
+        <GroupControl viewGroups={viewGroups} onGroupClick={onGroupClick} t={t} group={group} />
+      )}
       {viewFilters.length > 0 && (
         <FilterControl
           viewFilters={viewFilters}

packages/netlify-cms-core/src/components/Collection/ControlButton.js

@@ -0,0 +1,27 @@
+import React from 'react';
+import { css } from '@emotion/core';
+import styled from '@emotion/styled';
+import { buttons, StyledDropdownButton, colors } from 'netlify-cms-ui-default';
+
+const Button = styled(StyledDropdownButton)`
+  ${buttons.button};
+  ${buttons.medium};
+  ${buttons.grayText};
+  font-size: 14px;
+
+  &:after {
+    top: 11px;
+  }
+`;
+
+export const ControlButton = ({ active, title }) => {
+  return (
+    <Button
+      css={css`
+        color: ${active ? colors.active : undefined};
+      `}
+    >
+      {title}
+    </Button>
+  );
+};

packages/netlify-cms-core/src/components/Collection/Entries/EntriesCollection.js

@@ -2,21 +2,65 @@ import React from 'react';
 import PropTypes from 'prop-types';
 import ImmutablePropTypes from 'react-immutable-proptypes';
 import { connect } from 'react-redux';
+import styled from '@emotion/styled';
+import { translate } from 'react-polyglot';
 import { partial } from 'lodash';
 import { Cursor } from 'netlify-cms-lib-util';
+import { colors } from 'netlify-cms-ui-default';
 import {
   loadEntries as actionLoadEntries,
   traverseCollectionCursor as actionTraverseCollectionCursor,
 } from 'Actions/entries';
-import { selectEntries, selectEntriesLoaded, selectIsFetching } from '../../../reducers/entries';
+import {
+  selectEntries,
+  selectEntriesLoaded,
+  selectIsFetching,
+  selectGroups,
+} from '../../../reducers/entries';
 import { selectCollectionEntriesCursor } from 'Reducers/cursors';
 import Entries from './Entries';
 
+const GroupHeading = styled.h2`
+  font-size: 23px;
+  font-weight: 600;
+  color: ${colors.textLead};
+`;
+
+const GroupContainer = styled.div``;
+
+const getGroupEntries = (entries, paths) => {
+  return entries.filter(entry => paths.has(entry.get('path')));
+};
+
+const getGroupTitle = (group, t) => {
+  const { label, value } = group;
+  if (value === undefined) {
+    return t('collection.groups.other');
+  }
+  if (typeof value === 'boolean') {
+    return value ? label : t('collection.groups.negateLabel', { label });
+  }
+  return `${label} ${value}`.trim();
+};
+
+const withGroups = (groups, entries, EntriesToRender, t) => {
+  return groups.map(group => {
+    const title = getGroupTitle(group, t);
+    return (
+      <GroupContainer key={group.id} id={group.id}>
+        <GroupHeading>{title}</GroupHeading>
+        <EntriesToRender entries={getGroupEntries(entries, group.paths)} />
+      </GroupContainer>
+    );
+  });
+};
+
 export class EntriesCollection extends React.Component {
   static propTypes = {
     collection: ImmutablePropTypes.map.isRequired,
     page: PropTypes.number,
     entries: ImmutablePropTypes.list,
+    groups: PropTypes.array,
     isFetching: PropTypes.bool.isRequired,
     viewStyle: PropTypes.string,
     cursor: PropTypes.object.isRequired,
@@ -45,20 +89,28 @@ export class EntriesCollection extends React.Component {
   };
 
   render() {
-    const { collection, entries, isFetching, viewStyle, cursor, page } = this.props;
+    const { collection, entries, groups, isFetching, viewStyle, cursor, page, t } = this.props;
 
-    return (
+    const EntriesToRender = ({ entries }) => {
-      <Entries
+      return (
-        collections={collection}
+        <Entries
-        entries={entries}
+          collections={collection}
-        isFetching={isFetching}
+          entries={entries}
-        collectionName={collection.get('label')}
+          isFetching={isFetching}
-        viewStyle={viewStyle}
+          collectionName={collection.get('label')}
-        cursor={cursor}
+          viewStyle={viewStyle}
-        handleCursorActions={partial(this.handleCursorActions, cursor)}
+          cursor={cursor}
-        page={page}
+          handleCursorActions={partial(this.handleCursorActions, cursor)}
-      />
+          page={page}
-    );
+        />
+      );
+    };
+
+    if (groups && groups.length > 0) {
+      return withGroups(groups, entries, EntriesToRender, t);
+    }
+
+    return <EntriesToRender entries={entries} />;
   }
 }
 
@@ -87,6 +139,7 @@ function mapStateToProps(state, ownProps) {
   const page = state.entries.getIn(['pages', collection.get('name'), 'page']);
 
   let entries = selectEntries(state.entries, collection);
+  const groups = selectGroups(state.entries, collection);
 
   if (collection.has('nested')) {
     const collectionFolder = collection.get('folder');
@@ -98,7 +151,7 @@ function mapStateToProps(state, ownProps) {
   const rawCursor = selectCollectionEntriesCursor(state.cursors, collection.get('name'));
   const cursor = Cursor.create(rawCursor).clearData();
 
-  return { collection, page, entries, entriesLoaded, isFetching, viewStyle, cursor };
+  return { collection, page, entries, groups, entriesLoaded, isFetching, viewStyle, cursor };
 }
 
 const mapDispatchToProps = {
@@ -106,4 +159,6 @@ const mapDispatchToProps = {
   traverseCollectionCursor: actionTraverseCollectionCursor,
 };
 
-export default connect(mapStateToProps, mapDispatchToProps)(EntriesCollection);
+const ConnectedEntriesCollection = connect(mapStateToProps, mapDispatchToProps)(EntriesCollection);
+
+export default translate()(ConnectedEntriesCollection);

packages/netlify-cms-core/src/components/Collection/FilterControl.js

@@ -1,25 +1,7 @@
 import React from 'react';
-import { css } from '@emotion/core';
-import styled from '@emotion/styled';
 import { translate } from 'react-polyglot';
-import {
+import { Dropdown, DropdownCheckedItem } from 'netlify-cms-ui-default';
-  buttons,
+import { ControlButton } from './ControlButton';
-  Dropdown,
-  DropdownCheckedItem,
-  StyledDropdownButton,
-  colors,
-} from 'netlify-cms-ui-default';
-
-const FilterButton = styled(StyledDropdownButton)`
-  ${buttons.button};
-  ${buttons.medium};
-  ${buttons.grayText};
-  font-size: 14px;
-
-  &:after {
-    top: 11px;
-  }
-`;
 
 const FilterControl = ({ viewFilters, t, onFilterClick, filter }) => {
   const hasActiveFilter = filter
@@ -31,13 +13,7 @@ const FilterControl = ({ viewFilters, t, onFilterClick, filter }) => {
     <Dropdown
       renderButton={() => {
         return (
-          <FilterButton
+          <ControlButton active={hasActiveFilter} title={t('collection.collectionTop.filterBy')} />
-            css={css`
-              color: ${hasActiveFilter ? colors.active : undefined};
-            `}
-          >
-            {t('collection.collectionTop.filterBy')}
-          </FilterButton>
         );
       }}
       closeOnSelection={false}

packages/netlify-cms-core/src/components/Collection/GroupControl.js

@@ -0,0 +1,38 @@
+import React from 'react';
+import { translate } from 'react-polyglot';
+import { Dropdown, DropdownItem } from 'netlify-cms-ui-default';
+import { ControlButton } from './ControlButton';
+
+const GroupControl = ({ viewGroups, t, onGroupClick, group }) => {
+  const hasActiveGroup = group
+    ?.valueSeq()
+    .toJS()
+    .some(f => f.active === true);
+
+  return (
+    <Dropdown
+      renderButton={() => {
+        return (
+          <ControlButton active={hasActiveGroup} title={t('collection.collectionTop.groupBy')} />
+        );
+      }}
+      closeOnSelection={false}
+      dropdownTopOverlap="30px"
+      dropdownWidth="160px"
+      dropdownPosition="left"
+    >
+      {viewGroups.map(viewGroup => {
+        return (
+          <DropdownItem
+            key={viewGroup.id}
+            label={viewGroup.label}
+            onClick={() => onGroupClick(viewGroup)}
+            isActive={group.getIn([viewGroup.id, 'active'], false)}
+          />
+        );
+      })}
+    </Dropdown>
+  );
+};
+
+export default translate()(GroupControl);

packages/netlify-cms-core/src/components/Collection/SortControl.js

@@ -1,26 +1,8 @@
 import React from 'react';
-import { css } from '@emotion/core';
-import styled from '@emotion/styled';
 import { translate } from 'react-polyglot';
-import {
+import { Dropdown, DropdownItem } from 'netlify-cms-ui-default';
-  buttons,
-  Dropdown,
-  DropdownItem,
-  StyledDropdownButton,
-  colors,
-} from 'netlify-cms-ui-default';
 import { SortDirection } from '../../types/redux';
-
+import { ControlButton } from './ControlButton';
-const SortButton = styled(StyledDropdownButton)`
-  ${buttons.button};
-  ${buttons.medium};
-  ${buttons.grayText};
-  font-size: 14px;
-
-  &:after {
-    top: 11px;
-  }
-`;
 
 function nextSortDirection(direction) {
   switch (direction) {
@@ -54,15 +36,11 @@ const SortControl = ({ t, fields, onSortClick, sort }) => {
 
   return (
     <Dropdown
-      renderButton={() => (
+      renderButton={() => {
-        <SortButton
+        return (
-          css={css`
+          <ControlButton active={hasActiveSort} title={t('collection.collectionTop.sortBy')} />
-            color: ${hasActiveSort ? colors.active : undefined};
+        );
-          `}
+      }}
-        >
-          {t('collection.collectionTop.sortBy')}
-        </SortButton>
-      )}
       closeOnSelection={false}
       dropdownTopOverlap="30px"
       dropdownWidth="160px"

packages/netlify-cms-core/src/components/Collection/__tests__/Collection.spec.js

@@ -21,7 +21,12 @@ const renderWithRedux = (component, { store } = {}) => {
 };
 
 describe('Collection', () => {
-  const collection = fromJS({ name: 'pages', sortable_fields: [], view_filters: [] });
+  const collection = fromJS({
+    name: 'pages',
+    sortable_fields: [],
+    view_filters: [],
+    view_groups: [],
+  });
   const props = {
     collections: fromJS([collection]).toOrderedMap(),
     collection,

packages/netlify-cms-core/src/components/Collection/__tests__/__snapshots__/Collection.spec.js.snap

@@ -14,8 +14,8 @@ exports[`Collection should render connected component 1`] = `
     class="emotion-2 emotion-3"
   >
     <mock-sidebar
-      collection="Map { \\"name\\": \\"pages\\", \\"sortable_fields\\": List [], \\"view_filters\\": List [] }"
+      collection="Map { \\"name\\": \\"pages\\", \\"sortable_fields\\": List [], \\"view_filters\\": List [], \\"view_groups\\": List [] }"
-      collections="OrderedMap { 0: Map { \\"name\\": \\"pages\\", \\"sortable_fields\\": List [], \\"view_filters\\": List [] } }"
+      collections="OrderedMap { 0: Map { \\"name\\": \\"pages\\", \\"sortable_fields\\": List [], \\"view_filters\\": List [], \\"view_groups\\": List [] } }"
       filterterm=""
       searchterm=""
     />
@@ -23,16 +23,18 @@ exports[`Collection should render connected component 1`] = `
       class="emotion-0 emotion-1"
     >
       <mock-collection-top
-        collection="Map { \\"name\\": \\"pages\\", \\"sortable_fields\\": List [], \\"view_filters\\": List [] }"
+        collection="Map { \\"name\\": \\"pages\\", \\"sortable_fields\\": List [], \\"view_filters\\": List [], \\"view_groups\\": List [] }"
         newentryurl=""
       />
       <mock-collection-controls
         filter="Map {}"
+        group="Map {}"
         sortablefields=""
         viewfilters=""
+        viewgroups=""
       />
       <mock-entries-collection
-        collection="Map { \\"name\\": \\"pages\\", \\"sortable_fields\\": List [], \\"view_filters\\": List [] }"
+        collection="Map { \\"name\\": \\"pages\\", \\"sortable_fields\\": List [], \\"view_filters\\": List [], \\"view_groups\\": List [] }"
         filterterm=""
       />
     </main>
@@ -54,19 +56,19 @@ exports[`Collection should render with collection with create url 1`] = `
     class="emotion-2 emotion-3"
   >
     <mock-sidebar
-      collection="Map { \\"name\\": \\"pages\\", \\"sortable_fields\\": List [], \\"view_filters\\": List [], \\"create\\": true }"
+      collection="Map { \\"name\\": \\"pages\\", \\"sortable_fields\\": List [], \\"view_filters\\": List [], \\"view_groups\\": List [], \\"create\\": true }"
-      collections="OrderedMap { 0: Map { \\"name\\": \\"pages\\", \\"sortable_fields\\": List [], \\"view_filters\\": List [] } }"
+      collections="OrderedMap { 0: Map { \\"name\\": \\"pages\\", \\"sortable_fields\\": List [], \\"view_filters\\": List [], \\"view_groups\\": List [] } }"
     />
     <main
       class="emotion-0 emotion-1"
     >
       <mock-collection-top
-        collection="Map { \\"name\\": \\"pages\\", \\"sortable_fields\\": List [], \\"view_filters\\": List [], \\"create\\": true }"
+        collection="Map { \\"name\\": \\"pages\\", \\"sortable_fields\\": List [], \\"view_filters\\": List [], \\"view_groups\\": List [], \\"create\\": true }"
         newentryurl="/collections/pages/new"
       />
       <mock-collection-controls />
       <mock-entries-collection
-        collection="Map { \\"name\\": \\"pages\\", \\"sortable_fields\\": List [], \\"view_filters\\": List [], \\"create\\": true }"
+        collection="Map { \\"name\\": \\"pages\\", \\"sortable_fields\\": List [], \\"view_filters\\": List [], \\"view_groups\\": List [], \\"create\\": true }"
       />
     </main>
   </div>
@@ -87,20 +89,20 @@ exports[`Collection should render with collection with create url and path 1`] =
     class="emotion-2 emotion-3"
   >
     <mock-sidebar
-      collection="Map { \\"name\\": \\"pages\\", \\"sortable_fields\\": List [], \\"view_filters\\": List [], \\"create\\": true }"
+      collection="Map { \\"name\\": \\"pages\\", \\"sortable_fields\\": List [], \\"view_filters\\": List [], \\"view_groups\\": List [], \\"create\\": true }"
-      collections="OrderedMap { 0: Map { \\"name\\": \\"pages\\", \\"sortable_fields\\": List [], \\"view_filters\\": List [] } }"
+      collections="OrderedMap { 0: Map { \\"name\\": \\"pages\\", \\"sortable_fields\\": List [], \\"view_filters\\": List [], \\"view_groups\\": List [] } }"
       filterterm="dir1/dir2"
     />
     <main
       class="emotion-0 emotion-1"
     >
       <mock-collection-top
-        collection="Map { \\"name\\": \\"pages\\", \\"sortable_fields\\": List [], \\"view_filters\\": List [], \\"create\\": true }"
+        collection="Map { \\"name\\": \\"pages\\", \\"sortable_fields\\": List [], \\"view_filters\\": List [], \\"view_groups\\": List [], \\"create\\": true }"
         newentryurl="/collections/pages/new?path=dir1/dir2"
       />
       <mock-collection-controls />
       <mock-entries-collection
-        collection="Map { \\"name\\": \\"pages\\", \\"sortable_fields\\": List [], \\"view_filters\\": List [], \\"create\\": true }"
+        collection="Map { \\"name\\": \\"pages\\", \\"sortable_fields\\": List [], \\"view_filters\\": List [], \\"view_groups\\": List [], \\"create\\": true }"
         filterterm="dir1/dir2"
       />
     </main>
@@ -122,19 +124,19 @@ exports[`Collection should render with collection without create url 1`] = `
     class="emotion-2 emotion-3"
   >
     <mock-sidebar
-      collection="Map { \\"name\\": \\"pages\\", \\"sortable_fields\\": List [], \\"view_filters\\": List [], \\"create\\": false }"
+      collection="Map { \\"name\\": \\"pages\\", \\"sortable_fields\\": List [], \\"view_filters\\": List [], \\"view_groups\\": List [], \\"create\\": false }"
-      collections="OrderedMap { 0: Map { \\"name\\": \\"pages\\", \\"sortable_fields\\": List [], \\"view_filters\\": List [] } }"
+      collections="OrderedMap { 0: Map { \\"name\\": \\"pages\\", \\"sortable_fields\\": List [], \\"view_filters\\": List [], \\"view_groups\\": List [] } }"
     />
     <main
       class="emotion-0 emotion-1"
     >
       <mock-collection-top
-        collection="Map { \\"name\\": \\"pages\\", \\"sortable_fields\\": List [], \\"view_filters\\": List [], \\"create\\": false }"
+        collection="Map { \\"name\\": \\"pages\\", \\"sortable_fields\\": List [], \\"view_filters\\": List [], \\"view_groups\\": List [], \\"create\\": false }"
         newentryurl=""
       />
       <mock-collection-controls />
       <mock-entries-collection
-        collection="Map { \\"name\\": \\"pages\\", \\"sortable_fields\\": List [], \\"view_filters\\": List [], \\"create\\": false }"
+        collection="Map { \\"name\\": \\"pages\\", \\"sortable_fields\\": List [], \\"view_filters\\": List [], \\"view_groups\\": List [], \\"create\\": false }"
       />
     </main>
   </div>

packages/netlify-cms-core/src/constants/configSchema.js

@@ -97,6 +97,21 @@ const viewFilters = {
   },
 };
 
+const viewGroups = {
+  type: 'array',
+  minItems: 1,
+  items: {
+    type: 'object',
+    properties: {
+      label: { type: 'string' },
+      field: { type: 'string' },
+      pattern: { type: 'string' },
+    },
+    additionalProperties: false,
+    required: ['label', 'field'],
+  },
+};
+
 /**
  * The schema had to be wrapped in a function to
  * fix a circular dependency problem for WebPack,
@@ -234,6 +249,7 @@ const getConfigSchema = () => ({
             },
           },
           view_filters: viewFilters,
+          view_groups: viewGroups,
           nested: {
             type: 'object',
             properties: {

packages/netlify-cms-core/src/reducers/collections.ts

@@ -13,6 +13,7 @@ import {
   State,
   EntryMap,
   ViewFilter,
+  ViewGroup,
 } from '../types/redux';
 import { selectMediaFolder } from './entries';
 import { stringTemplate } from 'netlify-cms-lib-widgets';
@@ -430,6 +431,11 @@ export const selectViewFilters = (collection: Collection) => {
   return viewFilters;
 };
 
+export const selectViewGroups = (collection: Collection) => {
+  const viewGroups = collection.get('view_groups').toJS() as ViewGroup[];
+  return viewGroups;
+};
+
 export const selectFieldsComments = (collection: Collection, entryMap: EntryMap) => {
   let fields: EntryField[] = [];
   if (collection.has('folder')) {

packages/netlify-cms-core/src/reducers/cursors.js

@@ -1,6 +1,11 @@
 import { fromJS } from 'immutable';
 import { Cursor } from 'netlify-cms-lib-util';
-import { ENTRIES_SUCCESS, SORT_ENTRIES_SUCCESS } from 'Actions/entries';
+import {
+  ENTRIES_SUCCESS,
+  SORT_ENTRIES_SUCCESS,
+  FILTER_ENTRIES_SUCCESS,
+  GROUP_ENTRIES_SUCCESS,
+} from 'Actions/entries';
 
 // Since pagination can be used for a variety of views (collections
 // and searches are the most common examples), we namespace cursors by
@@ -16,6 +21,8 @@ const cursors = (state = fromJS({ cursorsByType: { collectionEntries: {} } }), a
         Cursor.create(action.payload.cursor).store,
       );
     }
+    case FILTER_ENTRIES_SUCCESS:
+    case GROUP_ENTRIES_SUCCESS:
     case SORT_ENTRIES_SUCCESS: {
       return state.deleteIn(['cursorsByType', 'collectionEntries', action.payload.collection]);
     }

packages/netlify-cms-core/src/reducers/entries.ts

@@ -1,4 +1,4 @@
-import { Map, List, fromJS, OrderedMap } from 'immutable';
+import { Map, List, fromJS, OrderedMap, Set } from 'immutable';
 import { dirname, join } from 'path';
 import {
   ENTRY_REQUEST,
@@ -14,6 +14,9 @@ import {
   FILTER_ENTRIES_REQUEST,
   FILTER_ENTRIES_SUCCESS,
   FILTER_ENTRIES_FAILURE,
+  GROUP_ENTRIES_REQUEST,
+  GROUP_ENTRIES_SUCCESS,
+  GROUP_ENTRIES_FAILURE,
   CHANGE_VIEW_STYLE,
 } from '../actions/entries';
 import { SEARCH_ENTRIES_SUCCESS } from '../actions/search';
@@ -40,14 +43,19 @@ import {
   Sort,
   SortDirection,
   Filter,
+  Group,
   FilterMap,
+  GroupMap,
   EntriesFilterRequestPayload,
   EntriesFilterFailurePayload,
   ChangeViewStylePayload,
+  EntriesGroupRequestPayload,
+  EntriesGroupFailurePayload,
+  GroupOfEntries,
 } from '../types/redux';
 import { folderFormatter } from '../lib/formatters';
 import { isAbsolutePath, basename } from 'netlify-cms-lib-util';
-import { trim, once, sortBy, set, orderBy } from 'lodash';
+import { trim, once, sortBy, set, orderBy, groupBy } from 'lodash';
 import { selectSortDataPath } from './collections';
 import { stringTemplate } from 'netlify-cms-lib-widgets';
 import { VIEW_STYLE_LIST } from '../constants/collectionViews';
@@ -239,6 +247,7 @@ const entries = (
       return newState;
     }
 
+    case GROUP_ENTRIES_SUCCESS:
     case FILTER_ENTRIES_SUCCESS:
     case SORT_ENTRIES_SUCCESS: {
       const payload = action.payload as { collection: string; entries: EntryObject[] };
@@ -298,6 +307,30 @@ const entries = (
       return newState;
     }
 
+    case GROUP_ENTRIES_REQUEST: {
+      const payload = action.payload as EntriesGroupRequestPayload;
+      const { collection, group } = payload;
+      const newState = state.withMutations(map => {
+        const current: GroupMap = map.getIn(['group', collection, group.id], fromJS(group));
+        map.deleteIn(['group', collection]);
+        map.setIn(
+          ['group', collection, current.get('id')],
+          current.set('active', !current.get('active')),
+        );
+      });
+      return newState;
+    }
+
+    case GROUP_ENTRIES_FAILURE: {
+      const payload = action.payload as EntriesGroupFailurePayload;
+      const { collection, group } = payload;
+      const newState = state.withMutations(map => {
+        map.deleteIn(['group', collection, group.id]);
+        map.setIn(['pages', collection, 'isFetching'], false);
+      });
+      return newState;
+    }
+
     case CHANGE_VIEW_STYLE: {
       const payload = (action.payload as unknown) as ChangeViewStylePayload;
       const { style } = payload;
@@ -323,6 +356,17 @@ export const selectEntriesFilter = (entries: Entries, collection: string) => {
   return filter?.get(collection) || Map();
 };
 
+export const selectEntriesGroup = (entries: Entries, collection: string) => {
+  const group = entries.get('group') as Group | undefined;
+  return group?.get(collection) || Map();
+};
+
+export const selectEntriesGroupField = (entries: Entries, collection: string) => {
+  const groups = selectEntriesGroup(entries, collection);
+  const value = groups?.valueSeq().find(v => v?.get('active') === true);
+  return value;
+};
+
 export const selectEntriesSortFields = (entries: Entries, collection: string) => {
   const sort = selectEntriesSort(entries, collection);
   const values =
@@ -354,12 +398,17 @@ export const selectEntry = (state: Entries, collection: string, slug: string) =>
 export const selectPublishedSlugs = (state: Entries, collection: string) =>
   state.getIn(['pages', collection, 'ids'], List<string>());
 
-export const selectEntries = (state: Entries, collection: Collection) => {
+const getPublishedEntries = (state: Entries, collectionName: string) => {
-  const collectionName = collection.get('name');
   const slugs = selectPublishedSlugs(state, collectionName);
-  let entries =
+  const entries =
     slugs &&
     (slugs.map(slug => selectEntry(state, collectionName, slug as string)) as List<EntryMap>);
+  return entries;
+};
+
+export const selectEntries = (state: Entries, collection: Collection) => {
+  const collectionName = collection.get('name');
+  let entries = getPublishedEntries(state, collectionName);
 
   const sortFields = selectEntriesSortFields(state, collectionName);
   if (sortFields && sortFields.length > 0) {
@@ -391,6 +440,75 @@ export const selectEntries = (state: Entries, collection: Collection) => {
   return entries;
 };
 
+const getGroup = (entry: EntryMap, selectedGroup: GroupMap) => {
+  const label = selectedGroup.get('label');
+  const field = selectedGroup.get('field');
+
+  const fieldData = entry.getIn(['data', ...keyToPathArray(field)]);
+  if (fieldData === undefined) {
+    return {
+      id: 'missing_value',
+      label,
+      value: fieldData,
+    };
+  }
+
+  const dataAsString = String(fieldData);
+  if (selectedGroup.has('pattern')) {
+    const pattern = selectedGroup.get('pattern');
+    let value = '';
+    try {
+      const regex = new RegExp(pattern);
+      const matched = dataAsString.match(regex);
+      if (matched) {
+        value = matched[0];
+      }
+    } catch (e) {
+      console.warn(`Invalid view group pattern '${pattern}' for field '${field}'`, e);
+    }
+    return {
+      id: `${label}${value}`,
+      label,
+      value,
+    };
+  }
+
+  return {
+    id: `${label}${fieldData}`,
+    label,
+    value: typeof fieldData === 'boolean' ? fieldData : dataAsString,
+  };
+};
+
+export const selectGroups = (state: Entries, collection: Collection) => {
+  const collectionName = collection.get('name');
+  const entries = getPublishedEntries(state, collectionName);
+
+  const selectedGroup = selectEntriesGroupField(state, collectionName);
+  if (selectedGroup === undefined) {
+    return [];
+  }
+
+  let groups: Record<
+    string,
+    { id: string; label: string; value: string | boolean | undefined }
+  > = {};
+  const groupedEntries = groupBy(entries.toArray(), entry => {
+    const group = getGroup(entry, selectedGroup);
+    groups = { ...groups, [group.id]: group };
+    return group.id;
+  });
+
+  const groupsArray: GroupOfEntries[] = Object.entries(groupedEntries).map(([id, entries]) => {
+    return {
+      ...groups[id],
+      paths: Set(entries.map(entry => entry.get('path'))),
+    };
+  });
+
+  return groupsArray;
+};
+
 export const selectEntryByPath = (state: Entries, collection: string, path: string) => {
   const slugs = selectPublishedSlugs(state, collection);
   const entries =

packages/netlify-cms-core/src/types/redux.ts

@@ -1,6 +1,6 @@
 import { Action } from 'redux';
 import { StaticallyTypedRecord } from './immutable';
-import { Map, List, OrderedMap } from 'immutable';
+import { Map, List, OrderedMap, Set } from 'immutable';
 import AssetProxy from '../valueObjects/AssetProxy';
 import { MediaFile as BackendMediaFile } from '../backend';
 
@@ -66,8 +66,19 @@ export type Sort = Map<string, SortMap>;
 
 export type FilterMap = StaticallyTypedRecord<ViewFilter & { active: boolean }>;
 
+export type GroupMap = StaticallyTypedRecord<ViewGroup & { active: boolean }>;
+
 export type Filter = Map<string, Map<string, FilterMap>>; // collection.field.active
 
+export type Group = Map<string, Map<string, GroupMap>>; // collection.field.active
+
+export type GroupOfEntries = {
+  id: string;
+  label: string;
+  value: string | boolean | undefined;
+  paths: Set<string>;
+};
+
 export type Entities = StaticallyTypedRecord<EntitiesObject>;
 
 export type Entries = StaticallyTypedRecord<{
@@ -75,6 +86,7 @@ export type Entries = StaticallyTypedRecord<{
   entities: Entities & EntitiesObject;
   sort: Sort;
   filter: Filter;
+  group: Group;
   viewStyle: string;
 }>;
 
@@ -152,6 +164,14 @@ export type ViewFilter = {
   pattern: string;
   id: string;
 };
+
+export type ViewGroup = {
+  label: string;
+  field: string;
+  pattern: string;
+  id: string;
+};
+
 type NestedObject = { depth: number };
 
 type Nested = StaticallyTypedRecord<NestedObject>;
@@ -194,6 +214,7 @@ type CollectionObject = {
   label: string;
   sortable_fields: List<string>;
   view_filters: List<StaticallyTypedRecord<ViewFilter>>;
+  view_groups: List<StaticallyTypedRecord<ViewGroup>>;
   nested?: Nested;
   meta?: Meta;
   i18n: i18n;
@@ -359,6 +380,17 @@ export interface EntriesFilterFailurePayload {
   error: Error;
 }
 
+export interface EntriesGroupRequestPayload {
+  group: ViewGroup;
+  collection: string;
+}
+
+export interface EntriesGroupFailurePayload {
+  group: ViewGroup;
+  collection: string;
+  error: Error;
+}
+
 export interface ChangeViewStylePayload {
   style: string;
 }

packages/netlify-cms-locales/src/en/index.js

@@ -47,6 +47,7 @@ const en = {
       searchResults: 'Search Results for "%{searchTerm}"',
       searchResultsInCollection: 'Search Results for "%{searchTerm}" in %{collection}',
       filterBy: 'Filter by',
+      groupBy: 'Group by',
     },
     entries: {
       loadingEntries: 'Loading Entries...',
@@ -54,6 +55,10 @@ const en = {
       longerLoading: 'This might take several minutes',
       noEntries: 'No Entries',
     },
+    groups: {
+      other: 'Other',
+      negateLabel: 'Not %{label}',
+    },
     defaultFields: {
       author: {
         label: 'Author',