我使用一个函数从Lists对象中下载一些选项作为CSV。我想对连接到Lists对象的整个数据源执行相同的操作,但不确定如何扩展它以使用100,000个行作为示例。在按钮下载列表数据为CSV我有:
var rows = widget.root.descendants.MainTableBody.children._values;
var csvdata = [];
csvdata.push([["Email"],["Last Login"],["Sku ID"],["Sku Name"],["Docs Added Recently"]]);
for (var i in rows) {
var t = [];
t.push(rows[i].children.EmailField.text);
t.push(rows[i].children.LastLoginField.text);
t.push(rows[i].children.SkuIdField.text);
t.push(rows[i].children.SkuNameField.text);
t.push(rows[i].children.DocsAddedField.text);
csvdata.push(t);
}
console.log(csvdata);
exportToCsv("LMexport",csvdata);
导出函数取自this answer.I基本上需要rows
var来覆盖整个表,但这是很多数据。
有问题的数据源的架构:
以下是UI中用于参考的表格:
.reduce
将它们转换为csvfunction exportCsv(){
var query = app.models.Employees.newQuery();
//query.filters.... use query used to populate the datasource
var records = query.run(); //[{},{},{}...]
var csv = records.reduce(function(str, rec){
var email = rec.Email;
var login = rec.LastLogin;
var skuId = rec.SkuId;
return str + '"' + [email,login,skuId].join('","') + '"\n'; // result: "email","login","skuId"\n
},'');
return csv;
}