checkcolumn get count

Question

In a table column I have check boxes which gives me indicator whether i make any changes in it, I want to show the changes made in the message text. e.g (000 unsaved changes). I have used xtype:'checkcolumn'. How to get count for changes i made in check box.

{
            xtype: 'checkcolumn',
            header: 'Select',
            align:'center',
            dataIndex: 'mapped',
            flex:1,
            listeners : 
                        {
                            checkchange : function(column, recordIndex, checked) 
                                        {
                                            alert(checked);
                                            //or send a request
                                        } 
                        }

        },

Answer 1

You may try using these four store methods:

• getModifiedRecords() - Gets all records added or updated since the last commit. columns
• getNewRecords( ) - Gets all new records.
• getUpdatedRecords( ) - Returns all Model instances that have been updated in the Store but not yet synchronized with the Proxy.
• getRemovedRecords( ) - Returns any records that have been removed from the store but not yet destroyed on the proxy.

maybe something like this:

var store = Ext.getStore('yourStore'),
    modified = store.getUpdatedRecords(),
    count = modified.lenght;
console.log(count + ' changes made');