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    Question GroupingStore - How many groups exist based on the current grouping and sorting?

    GroupingStore - How many groups exist based on the current grouping and sorting?


    I would like to either collapse or expand each group based on the number of groups and the number of rows in each group. I have found the methods to expand or collapse all groups, however, I can't seem to figure out how to determine how many groups exist or a way to iterate through the groups and ask each group for how many rows exist within that group. I am trying to do this inside of the 'load' listener - maybe there is a better place to put this code?

    Any help or examples would be very much appreciated!

    Thanks,
    -Dan

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    That doesn't seem to be built in, however you could try these overrides:

    Code:
    Ext.override(Ext.data.GroupingStore, {
        getGroupNames : function() {
            return this.collect(this.groupField);
        },
        getNumberOfGroups : function() {
            return this.getGroupNames().length;
        },
        getRecordsInGroup : function (group) {
            return this.queryBy(function(r) {
                return r.get(this.groupField) === group;
            }, this);
        }
    });

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