Ext.data.Store、Javascript数组和Ext.grid.ColumnModel

this_column ),将该阵列推到另一个阵列的末端( columns ),并最终将其传递给Ext.grid.ColumnModel对象。

我遇到的问题是——无论我测试的是哪个查询(我有很多查询,大小和复杂度各不相同),columns数组始终按预期工作到 columns[15] columns[16] ,则从该点到上一个点的所有索引都将填充 栏目[15]

下面是一些代码:

columns = [];
this_column = [];

var MetaData = Ext.data.Record.create([
    {name: 'id'},
    {name: 'table'},
    {name: 'field'},
    {name: 'title'}
]);
// Query the server for metadata for the query we're about to run
metaDataStore = new Ext.data.Store({
    autoLoad: true,
    reader: new Ext.data.JsonReader({
        totalProperty: 'results',
        root: 'fields',
        id: 'id'
    }, MetaData),
    proxy: new Ext.data.HttpProxy({
        url: 'index.php/' + type + '/' + slug
    }),
    listeners: {
        'load': function () {
            metaDataStore.each(function(r) {
                this_column['id'] = r.data['id'];
                this_column['header'] = r.data['title'];
                this_column['sortable'] = true;
                this_column['dataIndex'] = r.data['table'] + '.' + r.data['field'];
                // This display valid information, through the entire process
                console.info(this_column['id'] + ' : ' + this_column['header'] + ' : ' + this_column['sortable'] + ' : ' + this_column['dataIndex']);
                columns.push(this_column);
            });

            // This goes nuts at columns[15]
            console.info(columns);

            gridColModel = new Ext.grid.ColumnModel({
                columns: columns
            });