In Ext JS 6.6 Classic, group grid rows by setting groupField on the store and adding the grid’s grouping feature. The code differs in other toolkits: Ext JS 7.0 Modern documents a grouped grid configuration instead. Check your toolkit and release before copying either pattern.
Group rows in an Ext JS 6.6 Classic grid
Sencha’s Ext JS 6.6 grid guide describes a two-part setup: tell the store which field groups its records, then enable the grouping feature on the grid.
- Set the store’s
groupField. Use the record field whose values should define the groups. - Add the grouping feature to the grid. Configure
features: [{ ftype: 'grouping' }].
This adapted example groups employees by department even though Department is not a displayed column. It follows Sencha’s Ext JS 6.6 Classic Grouping API example; confirm the syntax against your project’s exact release.
var store = Ext.create('Ext.data.Store', {
fields: ['name', 'seniority', 'department'],
groupField: 'department',
data: [
{ name: 'Michael Scott', seniority: 7, department: 'Management' },
{ name: 'Dwight Schrute', seniority: 2, department: 'Sales' },
{ name: 'Jim Halpert', seniority: 3, department: 'Sales' }
]
});
Ext.create('Ext.grid.Panel', {
title: 'Employees',
store: store,
columns: [
{ text: 'Name', dataIndex: 'name', flex: 1 },
{ text: 'Seniority', dataIndex: 'seniority', flex: 1 }
],
features: [{ ftype: 'grouping' }],
renderTo: Ext.getBody()
});Customize group headings and summaries
Change the group heading
In the Classic Grouping API, groupHeaderTpl controls the text shown for a group. For example, groupHeaderTpl: 'Subject: {name}' adds a label before the group value. See the Ext JS 6.6 Classic Grouping API for the documented configuration.
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Show a summary row
The API also documents showSummaryRow: true and per-column summary settings. Its examples use summaryType: 'count' and summaryType: 'average' to display aggregates. Enable a summary only when the aggregate helps interpret the records in that group.
Check toolkit and Ext JS version
The code above is for Classic, not a universal Ext JS recipe. Sencha’s Ext JS 7.0 Modern grouping guide describes a different interface: stores can be grouped under program control, and the grid has a grouped configuration. It also documents grouping by a field or a function. Do not substitute the Modern configuration into a Classic grid, or assume Classic examples apply unchanged to Modern.
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The Ext JS 8.0 documentation index includes a grid-grouping tutorial section, but its landing page alone does not establish that older examples have identical APIs. Consult the specific guide for the toolkit and release in your application.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.Account for collapsible groups and locked columns
The Ext JS 7.8 Classic Grouping API describes groups as expandable and collapsible, documents group expansion and collapse events, and covers column-menu grouping options and configuration for whether users can disable grouping.
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For a Classic grid with locked columns, that API notes that grouping should be supplied as a config object so the grid can create two instances of the feature. Treat this as a version-specific implementation detail and verify it against the release you use. The same API documents a grouping function for more complex grouping cases; available interfaces can differ across releases and toolkits.
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