JsonStore和JsonReader的问题

Question

在我的ExtJS应用程序中，我使用EditorGridPanel来显示来自服务器的数据。

var applicationsGrid = new Ext.grid.EditorGridPanel({
    region: 'west',
    layout: 'fit',
    title: '<img src="../../Content/img/app.png" />  Приложения',
    collapsible: true,
    margins: '0 0 5 5',
    split: true,
    width: '30%',
    listeners: { 'viewready': { fn: function() { applicationsGridStatusBar.setText('Приложений: ' + applicationsStore.getTotalCount()); } } },
    store: applicationsStore,
    loadMask: { msg: 'Загрузка...' },
    sm: new Ext.grid.RowSelectionModel({
        singleSelect: true,
        listeners: { 'rowselect': { fn: applicationsGrid_onRowSelect} }
    }),
    viewConfig: { forceFit: true },
    tbar: [{
        icon: '../../Content/img/add.gif',
        text: 'Добавить'
    }, '-', {
        icon: '../../Content/img/delete.gif',
        text: 'Удалить'
    }, '-'],
    bbar: applicationsGridStatusBar,
    columns: [{
        header: 'Приложения',
        dataIndex: 'ApplicationName',
        tooltip: 'Наименование приложения',
        sortable: true,
        editor: {
            xtype: 'textfield',
            allowBlank: false
        }
    }, {
        header: '<img src="../../Content/img/user.png" />',
        dataIndex: 'UsersCount',
        align: 'center',
        fixed: true,
        width: 50,
        tooltip: 'Количество пользователей приложения',
        sortable: true
    }, {
        header: '<img src="../../Content/img/role.gif" />',
        dataIndex: 'RolesCount',
        align: 'center',
        fixed: true,
        width: 50,
        tooltip: 'Количество ролей приложения',
        sortable: true}]
    });

当我在没有阅读器的情况下使用JsonStore时，它可以工作，但当我试图更新任何字段时，它会使用我的“创建”url而不是“更新”。

var applicationsStore = new Ext.data.JsonStore({
    root: 'applications',
    totalProperty: 'total',
    idProperty: 'ApplicationId',
    messageProperty: 'message',
    fields: [{ name: 'ApplicationId' }, { name: 'ApplicationName', allowBlank: false }, { name: 'UsersCount', allowBlank: false }, { name: 'RolesCount', allowBlank: false}],
    id: 'app1234',
    proxy: new Ext.data.HttpProxy({
        api: {
            create: '/api/applications/getapplicationslist1',
            read: '/api/applications/getapplicationslist',
            update: '/api/applications/getapplicationslist2',
            destroy: '/api/applications/getapplicationslist3'
        }
    }),        
    autoSave: true,
    autoLoad: true,
    writer: new Ext.data.JsonWriter({
        encode: false,
        listful: false,
        writeAllFields: false
    })
});

我认为问题在于我没有使用reader，但当我使用JsonReader时，网格将完全停止显示任何数据。

var applicationReader = new Ext.data.JsonReader({
    root: 'applications',
    totalProperty: 'total',
    idProperty: 'ApplicationId',
    messageProperty: 'message',
    fields: [{ name: 'ApplicationId' }, { name: 'ApplicationName', allowBlank: false }, { name: 'UsersCount', allowBlank: false }, { name: 'RolesCount', allowBlank: false}]
});

var applicationsStore = new Ext.data.JsonStore({
    id: 'app1234',
    proxy: new Ext.data.HttpProxy({
        api: {
            create: '/api/applications/getapplicationslist1',
            read: '/api/applications/getapplicationslist',
            update: '/api/applications/getapplicationslist2',
            destroy: '/api/applications/getapplicationslist3'
        }
    }),
    reader: applicationReader,
    autoSave: true,
    autoLoad: true,
    writer: new Ext.data.JsonWriter({
        encode: false,
        listful: false,
        writeAllFields: false
    })
});

那么，有没有人知道问题可能是什么以及如何解决它。从我的服务器返回的数据是Json格式的，并且没有问题。

{"message":"test","total":2,"applications":[{"ApplicationId":"f82dc920-17e7-45b5-98ab-03416fdf52b2","ApplicationName":"Archivist","UsersCount":6,"RolesCount":3},{"ApplicationId":"054e2e78-e15f-4609-a9b2-81c04aa570c8","ApplicationName":"Test","UsersCount":1,"RolesCount":0}]}

Answer 1

据我所知，Store 'id‘配置选项被取消了。

Answer 2

我也有同样的问题..我解决了这个问题:在json存储中建立成功属性，并在我的create方法的响应中返回Success true。这是我的代码。希望能有所帮助

var EStore = new Ext.data.JsonStore
                ({
                   api: { read: 'getAssignedJobs',
                        create: 'createAssignedJobs',
                        update: 'updateAssignedJobs',
                        destroy: 'destroyAssignedJobs'},
                    root: 'jobData',
                    idProperty: 'Id',
                    autoSave: false,
                    autoLoad: true,
                    batch: true,
                    successProperty: 'success',
                    writer: new Ext.data.JsonWriter({ encode: true, writeAllFields: true }),
                    fields: [
                        { name: 'Id', type: 'int', mapping: 'Id' },
                        { name: 'ResourceId', type: 'int', mapping: 'fitter_id' },
                        { name: 'StartDate', type: 'date', dateFormat: "Y-m-d\\TH:i:s" },
                        { name: 'EndDate', type: 'date', dateFormat: "Y-m-d\\TH:i:s" },
                        { name: 'status', type: 'int' },
                        { name: 'job_id', type: 'int' }
                                ]
                });

这是我在服务器端的Create方法。

public JsonResult createAssignedJobs(string jobData)
    {
        var Jsondata = (JobfitterToScheduler)new JavaScriptSerializer().Deserialize<JobfitterToScheduler>(jobData);
        JobToFitterRepo jobtofitter = new JobToFitterRepo();
        if (Jsondata != null)
        {
            jobtofitter.insertJobToFitter(13, Jsondata.fitter_id, 0, DateTime.Now, DateTime.Now);
            return this.Json(new { success = true, jobData = Jsondata });
        }
        return null;
    }

Answer 3

看一下Ext.data.Api的源代码，我会说动词搞砸了：

restActions : { create : 'POST', read : 'GET', update : 'PUT', destroy : 'DELETE' },

对我来说，创建应该是一个PUT，更新应该是一个POST。但我猜Sencha的人有不同的想法。顺便说一句，源代码取自Ext 3.3.1

我猜您可以重写restActions对象，使其按照您的预期工作：

Ext.data.Api.restActions = {
create  : 'PUT',
read    : 'GET',
update  : 'POST',
destroy : 'DELETE' };