您需要在列选项中添加该选项，例如

You need to add the option in the column options like

colModel: [{
    name: 'documentName',
    index: 'documentName',
    width: 200,
    editable: false,

    //add the following in one of the colModel config
    formatter: 'actions',
    formatoptions: {
        keys: true,
        editformbutton: true
    }
}

演示