Ext.GridPanel的columns里添加的items如何隐藏?

Question

Extjs为3.3
如果可以按条件隐藏某一行的那再好不过了，哪位大牛告知一下？

Answer 1

http://docs.sencha.com/extjs/3.4.0/#!/api/Ext.grid.ActionColumn-cfg-items
配置getClass ，依据传入的此列的值返回一个hidden样式名称隐藏，说是3.4才有，其实3.3也支持。
CSS

         .hideop{display:none}

              {
                    xtype: 'actioncolumn', header: 'operate', items: [{
                        icon: '1.png', getClass: function (v, meta, r) {
                            if (r.get('price') > 50) return 'hideop';
                                return ''
                        }
                    }]
                }

 items : Array★
An Array which may contain multiple icon definitions, each element of which may contain:

icon : String
The url of an image to display as the clickable element in the column.
iconCls : String
A CSS class to apply to the icon image. To determine the class dynamically, configure the item with a getClass function.
getClass : Function
A function which returns the CSS class to apply to the icon image. The function is passed the following parameters:
v : Object
The value of the column's configured field (if any).
metadata : Object
An object in which you may set the following attributes:

css : String
A CSS class name to add to the cell's TD element.
attr : String
An HTML attribute definition string to apply to the data container element within the table cell (e.g. 'style="color:red;"').
r : Ext.data.Record
The Record providing the data.
rowIndex : Number
The row index..
colIndex : Number
The column index.
store : Ext.data.Store
The Store which is providing the data Model.
handler : Function
A function called when the icon is clicked.
scope : Scope
The scope (this reference) in which the handler and getClass functions are executed. Fallback defaults are this Column's configured scope, then this Column.
tooltip : String
A tooltip message to be displayed on hover. Ext.QuickTips must have been initialized.