Question

使用Backgrid的客户端过滤器扩展程序执行搜索时，无法从我的集合中获取正确的totalRecords值。

具体来说，当我在键盘上使用退格键时。

如果我不使用退格键并慢慢输入，这似乎工作正常：

//Search input field - keyup event
$("input[name='q']").keyup(function () {

    console.log('searchcontainer input - keyup event');
    console.log($(this).val())
    console.log($(this).val().length)

    var key = event.keyCode || event.charCode;
    if (key == 8) { //'8' == backspace key 
        console.log('backspace was keyed!')

        //how do I refresh the 'totalRecords' property on the collection?
    }

    console.log((_myCollection.state.totalRecords || "0") + " records found."));

    $("#lblRecordsFound").text((_myCollection.state.totalRecords || "0") + " records found.");
});

看起来，当触发退格时，totalRows会跳过集合更新（？）？

如何在使用退格键时获取当前的totalRows？我是否需要重置，获取或刷新集合？我不确定。帮助

我只需要随时在网格中显示的totalRows。

Answer 1

我最终＆＃34;改变＆＃34; backgrid-filter.js扩展名。

我改变了搜索功能，如下所示：

/**
   Takes the query from the search box, constructs a matcher with it and
   loops through collection looking for matches. Reset the given collection
   when all the matches have been found.

   If the collection is a PageableCollection, searching will go back to the
   first page.
*/
search: function () {
  var matcher = _.bind(this.makeMatcher(this.query()), this);
  var col = this.collection;
  if (col.pageableCollection) col.pageableCollection.getFirstPage({ silent: true });
  col.reset(this.shadowCollection.filter(matcher), { reindex: false });
  var message = " items found.";
  if (col.pageableCollection.state.totalRecords == 1) {
      message = " item found.";
  }
  $("#lblRecordsFound").text((col.pageableCollection.state.totalRecords || "0") + message);
},

运作良好。我不明白为什么Backgrid没有公开的属性来轻松访问当前的总行。

如何从Backgrid客户端搜索获取totalRows

1 个答案: