Добавляем массовые операции в грид ExtJS

modExtra.grid.Items = function(config) {
    config = config || {};
    this.sm = new Ext.grid.CheckboxSelectionModel();
	Ext.applyIf(config,{
		id: 'impart-grid-items'
		,url: impArt.config.connector_url
		,baseParams: {
			action: 'mgr/item/getlist'
		}
		,fields: ['id', 'pagetitle', 'longtitle', 'content', 'alias', 'parent', 'alias_dublicate', 'imported']
		,autoHeight: true
		,paging: true
		,remoteSort: true
        ,sm: this.sm
...

...
    ,getSelectedAsList: function() {
        var sels = this.getSelectionModel().getSelections();
        if (sels.length <= 0) return false;

        var cs = '';
        for (var i=0;i<sels.length;i++) {
            cs += ','+sels[i].data.id;
        }
        cs = cs.substr(1);
        return cs;
    }

    ,removeSelected: function(act,btn,e) {
        var cs = this.getSelectedAsList();
        if (cs === false) return false;

    	MODx.msg.confirm({
			title: _('modextra_items_remove')
			,text: _('modextra_items_remove_confirm')
			,url: this.config.url
			,params: {
                action: 'mgr/item/multiremove'
                ,resources: cs
            }
            ,listeners: {
                'success': {fn:function® {
                    this.getSelectionModel().clearSelections(true);
                    this.refresh();
                       var t = Ext.getCmp('modx-resource-tree');
                       if (t) { t.refresh(); }
                },scope:this}
            }
        });
        return true;
    }
...

...
		,tbar: [{
    		text: _('modextra_item_create')
			,handler: this.createItem
			,scope: this
		},{
    		text: _('modextra_items_remove')
			,handler: this.removeSelected
			,scope: this
		]}
		,listeners: {
			rowDblClick: function(grid, rowIndex, e) {
				var row = grid.store.getAt(rowIndex);
				this.updateItem(grid, e, row);
			}
		}
...

<?php
class modExtraItemMultyRemoveProcessor extends modProcessor {
	public $checkRemovePermission = true;
	public $objectType = 'modExtraItem';
	public $classKey = 'modExtraItem';
	public $languageTopics = array('modextra');

	public function process() {

        $processorProps = array('processors_path' => dirname(__FILE__) . '/');
        foreach (explode(',',$this->getProperty('resources')) as $id) {
            $response = $this->modx->runProcessor('remove', array('id' => $id), $processorProps);
            if ($response->isError()) {
                return $response->response;
            }
        }
        return $this->success();

	}

}

return 'modExtraItemMultyRemoveProcessor';

...
	,getMenu: function() {
        var cs = this.getSelectedAsList();
        var m = [];
        if (cs.split(',').length > 1) {
        	m.push({
    			text: _('modextra_items_remove')
    			,handler: this.removeSelected
    		});
        } else {
    		m.push({
    			text: _('modextra_item_update')
    			,handler: this.updateItem
    		});
    		m.push('-');
    		m.push({
    			text: _('modextra_item_remove')
    			,handler: this.removeItem
    		});
        }
		this.addContextMenuItem(m);
    }
...