Javascript 如何更改extjs中特定列中的所有值？

我有一个带列的可编辑网格面板，我想在按下applyToAll按钮时将列中的每个值更改为相同的值。似乎没有任何api调用使我能够获取列中的所有值，甚至网格面板中的所有值

//Model that defines my column named fileName
var colModel = new Ext.grid.ColumnModel([{
    header:'File Name', 
    dataIndex:'fileName'
    }
]);

// Editable grid panel:
var myGrid = new Ext.grid.EditorGridPanel({          
    store: store,
    colModel: colModel,
    clicksToEdit: 1,
    autoWidth: true,
    autoHeight: true
});

// Button that changes all the column names
var applyToAll = new Ext.Button({
  text: "Apply to All",
  handler: function(){
    var record = myGrid.getSelectionModel().getSelected();

    //Change the values of the column here somehow.

  }
});

//Form which holds everything
var gridForm = new Ext.FormPanel({
  id: 'mainForm',
  frame: true,
  items: [{
    columnWidth: 0.6,
    layout: 'fit',
    items: [myGrid],
    buttons: [applyToAll]
 });

---

单击ApplyAll按钮时，如何更改列中的所有值？

要知道选择了哪个单元格，请使用单元格选择模型

var myGrid = new Ext.grid.EditorGridPanel({          
    // ...
    selModel: new Ext.grid.CellSelectionModel(),
    // ...
});

然后，您可以调用存储区的每条记录并更改所需的值：

// Button that changes all the column names
var applyToAll = new Ext.Button({
    text: "Apply to All",
    handler: function(){
        var record = myGrid.getSelectionModel().getSelected();
        var row = myGrid.getSelectionModel().getSelectedCell()[0];
        var col = myGrid.getSelectionModel().getSelectedCell()[1];
        var column_name = myGrid.getColumnModel().getColumnAt(col).dataIndex;


        myGrid.getStore().each(function(rec){
            rec.set(column_name, myGrid.getStore().getAt(row).get(column_name));
        });
    }
});

我最终做了什么：

var myGrid = new Ext.grid.EditorGridPanel({
  //...
  //I needed RowSelectionModel for another portion of my code
  selModel: new Ext.grid.RowSelectionModel()
  //...
)};

var applyToAll = new Ext.Button({
  text: "Apply to All",
  handler: function(){
    var record = myGrid.getSelectionModel().getSelected();
    myGrid.stopEditing();

    var gridStore = myGrid.getStore();
    var records = gridStore.getRange(0, gridStore.getTotalCount());

    for(var ii=0; ii<records.length; ii++){
      var curRecord = records[ii];
      curRecord.set('testCell', record.get('testCell'));
    }

    gridStore.removeAll(true);
    gridStore.add(records);

    myGrid.startEditing(0, 0);
  }
});

var myGrid=new Ext.grid.EditorGridPanel({
//...
//我的代码的另一部分需要RowSelectionModel
selModel:new Ext.grid.RowSelectionModel（）
//...
)};
var applyToAll=新建外部按钮({
文本：“适用于所有人”，
处理程序：函数（）{
var record=myGrid.getSelectionModel（）.getSelected（）；
停止编辑（）；
var gridStore=myGrid.getStore（）；
var records=gridStore.getRange（0，gridStore.getTotalCount（））；
对于（var ii=0；ii