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Grouping

The Grid has options to group records by dragging and dropping the column header to the group drop area. When grouping is applied, grid records are organized into a hierarchical structure to facilitate easier expansion and collapse of records.

To enable Grouping in the grid, set the allowGrouping to true. Grouping options can be configured in groupSettings.

To use Grouping, you need to inject Group module in the provide section.

Source
Preview
app.vue
<template>
    <div id="app">
        <ejs-grid :dataSource='data' :allowGrouping='true' height='267px'>
            <e-columns>
                <e-column field='OrderID' headerText='Order ID' textAlign='Right' width=120></e-column>
                <e-column field='CustomerID' headerText='Customer ID' width=150></e-column>
                <e-column field='ShipCity' headerText='Ship City' width=150></e-column>
                <e-column field='ShipName' headerText='Ship Name' width=150></e-column>
            </e-columns>
            </ejs-grid>
        </ejs-grid>
    </div>
</template>
<script>
import Vue from "vue";
import { GridPlugin, Group } from "@syncfusion/ej2-vue-grids";
import { data } from './datasource.js';

Vue.use(GridPlugin);

export default {
  data() {
    return {
      data: data
    };
  },
  provide: {
    grid: [Group]
  }
}
</script>
<style>
 @import "../node_modules/@syncfusion/ej2-vue-grids/styles/material.css";
</style>

Initial group

To apply group at initial rendering, set the column field name in the groupSettings.columns.

Source
Preview
app.vue
<template>
    <div id="app">
        <ejs-grid :dataSource='data' :allowGrouping='true' :groupSettings='groupOptions' height='267px'>
            <e-columns>
                <e-column field='OrderID' headerText='Order ID' textAlign='Right' width=120></e-column>
                <e-column field='CustomerID' headerText='Customer ID' width=150></e-column>
                <e-column field='ShipCity' headerText='Ship City' width=150></e-column>
                <e-column field='ShipName' headerText='Ship Name' width=150></e-column>
            </e-columns>
        </ejs-grid>
    </div>
</template>
<script>
import Vue from "vue";
import { GridPlugin, Group } from "@syncfusion/ej2-vue-grids";
import { data } from './datasource.js';

Vue.use(GridPlugin);

export default {
  data() {
    return {
      data: data,
      groupOptions: { columns: ['CustomerID', 'ShipCity'] }
    };
  },
  provide: {
    grid: [Group]
  }
}
</script>
<style>
 @import "../node_modules/@syncfusion/ej2-vue-grids/styles/material.css";
</style>

Hide drop area

To avoid ungrouping or further grouping of a column after initial column grouping, define the groupSettings.showDropArea as false.

Source
Preview
app.vue
<template>
    <div id="app">
        <ejs-grid :dataSource='data' :allowGrouping='true' :groupSettings='groupOptions' height='267px'>
            <e-columns>
                <e-column field='OrderID' headerText='Order ID' textAlign='Right' width=120></e-column>
                <e-column field='CustomerID' headerText='Customer ID' width=150></e-column>
                <e-column field='ShipCity' headerText='Ship City' width=150></e-column>
                <e-column field='ShipName' headerText='Ship Name' width=150></e-column>
            </e-columns>
        </ejs-grid>
    </div>
</template>
<script>
import Vue from "vue";
import { GridPlugin, Group } from "@syncfusion/ej2-vue-grids";
import { data } from './datasource.js';

Vue.use(GridPlugin);

export default {
  data() {
    return {
      data: data,
      groupOptions: { showDropArea: false, columns: ['CustomerID', 'ShipCity'] }
    };
  },
  provide: {
    grid: [Group]
  }
}
</script>
<style>
 @import "../node_modules/@syncfusion/ej2-vue-grids/styles/material.css";
</style>

Group with Paging

On grouping columns with paging feature, the aggregated information and total items are displayed based on the current page. The grid does not consider aggregated information and total items from other pages. To get additional details (aggregated information and total items) from other pages, set the groupSettings.disablePageWiseAggregates to true.

If remote data is bound to grid dataSource, two requests will be sent when performing grouping action; one for getting the grouped data and another for getting aggregate details and total items count.

Group by format

By default, columns will be grouped by the data or value present for the particular row. To group numeric or datetime column based on the mentioned format, you have to enable the enableGroupByFormat property of the corresponding grid columns.

Source
Preview
app.vue
<template>
    <div id="app">
        <ejs-grid :dataSource='data' :allowGrouping='true' :groupSettings='groupOptions' height='315px'>
            <e-columns>
                <e-column field='OrderID' headerText='Order ID' textAlign='Right' width=120></e-column>
                <e-column field='CustomerID' headerText='Customer ID' width=150></e-column>
                <e-column field='OrderDate' headerText='Order Date' format='yMMM' :enableGroupByFormat='true' width=150 type='date'></e-column>
                <e-column field='Freight' headerText='Freight' format='C2' :enableGroupByFormat='true' width=150></e-column>
            </e-columns>
        </ejs-grid>
    </div>
</template>
<script>
import Vue from "vue";
import { GridPlugin, Group } from "@syncfusion/ej2-vue-grids";
import { data } from './datasource.js';

Vue.use(GridPlugin);

export default {
  data() {
    return {
      data: data,
      groupOptions: { columns: ['OrderDate', 'Freight'] }
    };
  },
  provide: {
    grid: [Group]
  }
}
</script>
<style>
 @import "../node_modules/@syncfusion/ej2-vue-grids/styles/material.css";
</style>

Collapse By External Button

To collapse the selected grouped row from an external button by using the expandCollapse method.

Source
Preview
app.vue
<template>
    <div id="app">
        <ejs-button id='collapse' cssClass='e-flat' @click.native='collapse'>Collapse</ejs-button>
        <ejs-grid ref='grid' :dataSource='data' :allowGrouping='true' :groupSettings='groupSettings' height='240px'>
            <e-columns>
                <e-column field='OrderID' headerText='Order ID' textAlign='Right' width=120></e-column>
                <e-column field='CustomerID' headerText='Customer ID' width=150></e-column>
                <e-column field='ShipCity' headerText='Ship City' width=150></e-column>
                <e-column field='ShipName' headerText='Ship Name' width=150></e-column>
            </e-columns>
        </ejs-grid>
    </div>
</template>
<script>
import Vue from "vue";
import { GridPlugin, Group } from "@syncfusion/ej2-vue-grids";
import { ButtonPlugin } from "@syncfusion/ej2-vue-buttons";
import { data } from './datasource.js';

Vue.use(GridPlugin);
Vue.use(ButtonPlugin);

export default {
  data() {
    return {
      data: data,
      groupSettings: { columns: ['CustomerID'] }
    };
  },
  methods: {
    collapse: function() {
        if (this.$refs.grid.getSelectedRowIndexes().length) {
            let currentTr = this.$refs.grid.getRows()[this.$refs.grid.getSelectedRowIndexes()[0]];
            while (currentTr.classList && currentTr.classList.length) {
                currentTr = currentTr.previousSibling;
            }
            let collapseElement = currentTr.querySelector('.e-recordplusexpand');
            this.$refs.grid.ej2Instances.groupModule.expandCollapseRows(collapseElement); // pass the collapse row element.
        }
    }
  },
  provide: {
    grid: [Group]
  }
}
</script>
<style>
 @import "../node_modules/@syncfusion/ej2-vue-grids/styles/material.css";
</style>

Grouping Events

During the group action, the grid component triggers two events. The actionBegin event triggers before the group action starts and the actionComplete event triggers after the group action is completed. Using these events you can perform any action.

Source
Preview
app.vue
<template>
    <div id="app">
        <ejs-grid :dataSource='data' :allowGrouping='true' :actionComplete='actionHandler' :actionBegin='actionHandler' height='260px'>
            <e-columns>
                <e-column field='OrderID' headerText='Order ID' textAlign='Right' width=120></e-column>
                <e-column field='CustomerID' headerText='Customer ID' width=150></e-column>
                <e-column field='ShipCity' headerText='Ship City' width=150></e-column>
                <e-column field='ShipName' headerText='Ship Name' width=150></e-column>
            </e-columns>
        </ejs-grid>
    </div>
</template>
<script>
import Vue from "vue";
import { GridPlugin, Group } from "@syncfusion/ej2-vue-grids";
import { data } from './datasource.js';

Vue.use(GridPlugin);

export default {
  data() {
    return {
      data: data
    };
  },
  methods: {
    actionHandler: function(args) {
        alert(args.requestType + ' ' + args.type); // custom Action
    }
  },
  provide: {
    grid: [Group]
  }
}
</script>
<style>
 @import "../node_modules/@syncfusion/ej2-vue-grids/styles/material.css";
</style>

args.requestType is current action name. For example in grouping, the args.requestType value is ‘grouping’.

See Also