Extjs - how can I add subtotal/summary for each Grid Grouping row?

问题

Using an ExtJS 3.4 grid, how can I achieve the neat sub-total row under every Grouped section as in the following example:

http://dev.sencha.com/playpen/gxt/totals/

I'm unable to upgrade as 3.4 is the version used by the CMS I use (MODX).

回答1:

Never mind, the same example is given for 3.4:

http://dev.sencha.com/deploy/ext-3.4.0/examples/grid/totals.html

来源：https://stackoverflow.com/questions/10908120/extjs-how-can-i-add-subtotal-summary-for-each-grid-grouping-row