使用图像创建模型类(creating a model class with an image)

 如果你的商店每个都有少于300条记录，并且页面上没有真正“那么多”商店，你应该做的是立即从php返回所有内容（或者更好的是加载所有商店的页面加载本身，但听起来你不能这样做）。 因此，不是你的一个ajax调用获取组合框中所选项的值，而是更像这样： 
 
 为每个商店定义了您的模型： 
 
Ext.define("MyModel1", {
    extend: "Ext.data.Model",
    fields: [
        {name:"field_code", type:"string"},
        {name:"field_value",      type:"string"}
    ]
});
 
 然后以非常简单的方式定义每个商店，注意我遗漏了您当前可能包含的阅读器和代理，为了提高性能，使用Ext.data.ArrayStore，因为它消除了记录中每个项目的必要性有一个命名属性（这会减少从服务器返回的文本以及前端的解析时间）： 
 
var myStore = Ext.create("Ext.data.ArrayStore", {
    model: "MyModel1",
    data:  []
});
 
 现在，在您已定义的ajax请求中，将来自php的响应添加到存储中的所有数据作为返回的json对象中的属性，并将它们作为数组数组执行，确保元素顺序与您定义Ext.data的方式相匹配。模型。 我的示例的返回对象看起来像这样（数据是数组数组）： 
 
{
    my_combobox_value1: "CAD",
    my_combobox_data1: [
        ["CAD","Somthing for display of this record"],
        ["AN","Another Entry]
    ]
}
 
 然后将ajax请求更改为如下所示： 
 
Ext.Ajax.request({
    url: 'url/to/another/PHP/file/',
    scope: this,
    method: 'GET',
    params: {
        code_id: 'myUser',
        number: '12345'
    },

    success: function (response, opts) {
         var result = Ext.decode(response.responseText);
         myStore.loadData(result.my_combobox_data1);
         Ext.getCmp('nameId').setValue(result.my_combobox_value1);
         ... and rinse and repeat for all stores, make sure you set the value for each combobox after the store has been loaded :)
    },

});
 
 这将为您提供最佳性能。 如果这不起作用，则必须使用具有处理服务器端所有内容的代理的存储，并根据需要加载数据。 

If your stores each has less than about 300 records, and there aren't really 'that' many stores on your page, what you should do is return everything from the php at once (or more preferably load all the stores with the page load itself, but it sounds like you can't do that). So, instead of your one ajax call getting the values of the selected item in the combobox, think of it more like this:
 
Defined your models for each of the stores:
 
Ext.define("MyModel1", {
    extend: "Ext.data.Model",
    fields: [
        {name:"field_code", type:"string"},
        {name:"field_value",      type:"string"}
    ]
});
 
Then define each of your stores in a very simple manner, notice that I left out the reader and proxy that you are probably currently including, for improved performance, use Ext.data.ArrayStore because it removes the necessity for each item in a record to have a named attribute (this reduces the text returned from the server and also the parsing time on the frontend):
 
var myStore = Ext.create("Ext.data.ArrayStore", {
    model: "MyModel1",
    data:  []
});
 
Now in the ajax request that you already defined, add in the response from php all the data for the stores as attributes in the json object returned, and do them as array arrays making sure the element order matches how you defined the Ext.data.Model. The return object for my example would look something like this (the data is the array array):
 
{
    my_combobox_value1: "CAD",
    my_combobox_data1: [
        ["CAD","Somthing for display of this record"],
        ["AN","Another Entry]
    ]
}
 
Then change the ajax request to look something like this:
 
Ext.Ajax.request({
    url: 'url/to/another/PHP/file/',
    scope: this,
    method: 'GET',
    params: {
        code_id: 'myUser',
        number: '12345'
    },

    success: function (response, opts) {
         var result = Ext.decode(response.responseText);
         myStore.loadData(result.my_combobox_data1);
         Ext.getCmp('nameId').setValue(result.my_combobox_value1);
         ... and rinse and repeat for all stores, make sure you set the value for each combobox after the store has been loaded :)
    },

});
 
This will give you the best possible performance for you situation. If this does not work, you will have to use stores with proxies that handle everything on the server side and load data as needed.