ExtJS 4 - 动态模型字段

Question

我想动态创建我的模型字段(在ExtJS 4中).例如,有时它是0到3,有时它是0到7.这些数据来自JSON文件(和存储).这是我的模特:

Ext.define('MyApp.model.User', {
    extend: 'Ext.data.Model',
    fields: ['0','1','2','3','4','5']
});

我尝试了很多方法来手动获取模型并创建字段,但是当涉及网格时,我有空行数据而没有任何错误.例如,网格中有8个空行.

任何帮助,将不胜感激

Answer 1

我使用商店加载回调返回的记录动态生成我的模型.以下是我使用记录动态创建字段的方法.

roomTypesStore_Loaded: function (records) {
    var roomType;
    var fields = [
        { name: 'Id', type: 'int' },
        { name: 'Date', type: 'date' }
    ];

    for (var i = 0; i < records.length; i++) {
        roomType = records[i].data;
        fields[2 + (3 * i) + 0] = { name: roomType.Name + 'Rates', type: 'string' };
        fields[2 + (3 * i) + 1] = { name: roomType.Name + 'Selling', type: 'string' };
        fields[2 + (3 * i) + 2] = { name: roomType.Name + 'Booked', type: 'string' };
    }

    var model = {
        extend: 'Ext.data.Model',
        fields: fields
    };
    Ext.define('HEB.store.Schedule', model);
    var scheduleGrid = this.getScheduleGrid();
    var scheduleStore = this.getScheduleStore();
    if (scheduleGrid != null && scheduleStore != null) {
        scheduleGrid.reconfigure(scheduleStore, columns);
    }
},