Extjs Restful Store,批量发送请求?

发布于 2024-10-06 07:17:05 字数 2651 浏览 6 评论 0原文

我创建了一个带有如下存储配置的网格组件:

    //Create the store
    config.store = new Ext.data.Store({
        restful: true,
        autoSave: false,
        batch: true,
        writer: new Ext.data.JsonWriter({
            encode: false
        }),
        reader: new Ext.data.JsonReader({
            totalProperty: 'total',
            root: 'data',
            fields: cfg.fields
        }),
        proxy: new Ext.data.HttpProxy({
            url:cfg.rest,
            listeners:{
                exception: {
                    fn: function(proxy, type, action, options, response, arg) {
                        this.fireEvent('exception', proxy, type, action, options, response, arg);
                    },
                    scope: this
                }
            }
        }),
        remoteSort: true,
        successProperty: 'success',
        baseParams: {
            start: 0,
            limit: cfg.pageSize || 15
        },
        autoLoad: true,
        listeners: {
            load: {
                fn: function() {
                    this.el.unmask();
                },
                scope: this
            },

            beforeload: {
                fn: function() {
                    this.el.mask("Working");
                },
                scope: this
            },
            save: {
                fn: function(store, batch, data) {
                    this.el.unmask();
                    this.fireEvent('save', store, batch, data);
                },
                scope: this
            },

            beforewrite: {
                fn: function(){
                    this.el.mask("Working...");
                },
                scope: this
            }

        }
    });

注意:忽略 fireEvents。该商店正在共享的自定义网格组件中进行配置。

然而,我这里有一个问题:无论我做了什么 CRUD 操作,我总是向服务器发出 N 个请求,这等于我选择的 N 行。即,如果我选择 10 行并点击“删除”,则会向服务器发出 10 个删除请求。

例如,这就是我删除记录的方式:

/**
 * Call this to delete selected items. No confirmation needed
 */
_deleteSelectedItems: function() {
    var selections = this.getSelectionModel().getSelections();
    if (selections.length > 0) {
        this.store.remove(selections);
    }
    this.store.save();
    this.store.reload();
},

注意:“this”的范围是一个网格组件。

那么,事情应该是这样的吗?还是我的配置问题? 我使用的是Extjs 3.3.1,根据Ext.data.Store下的batch文档,

如果 Store 是 RESTful,则 DataProxy 也是 RESTful,并且会为每条记录生成唯一的事务。

我希望这是我的配置问题。

注意:我尝试在 Ext.data 中使用 listfulencodewriteAllFieldsencodeDelete .JsonWriter...没有希望

I created a Grid component with the store configuration like this:

    //Create the store
    config.store = new Ext.data.Store({
        restful: true,
        autoSave: false,
        batch: true,
        writer: new Ext.data.JsonWriter({
            encode: false
        }),
        reader: new Ext.data.JsonReader({
            totalProperty: 'total',
            root: 'data',
            fields: cfg.fields
        }),
        proxy: new Ext.data.HttpProxy({
            url:cfg.rest,
            listeners:{
                exception: {
                    fn: function(proxy, type, action, options, response, arg) {
                        this.fireEvent('exception', proxy, type, action, options, response, arg);
                    },
                    scope: this
                }
            }
        }),
        remoteSort: true,
        successProperty: 'success',
        baseParams: {
            start: 0,
            limit: cfg.pageSize || 15
        },
        autoLoad: true,
        listeners: {
            load: {
                fn: function() {
                    this.el.unmask();
                },
                scope: this
            },

            beforeload: {
                fn: function() {
                    this.el.mask("Working");
                },
                scope: this
            },
            save: {
                fn: function(store, batch, data) {
                    this.el.unmask();
                    this.fireEvent('save', store, batch, data);
                },
                scope: this
            },

            beforewrite: {
                fn: function(){
                    this.el.mask("Working...");
                },
                scope: this
            }

        }
    });

Note: Ignore the fireEvents. This store is being configured in a shared custom Grid Component.

However, I have one problem here: Whatever CRUD actions I did, I always come out with N requests to the server which is equal to N rows I selected. i.e., if I select 10 rows and hit Delete, 10 DELETE requests will be made to the server.

For example, this is how I delete records:

/**
 * Call this to delete selected items. No confirmation needed
 */
_deleteSelectedItems: function() {
    var selections = this.getSelectionModel().getSelections();
    if (selections.length > 0) {
        this.store.remove(selections);
    }
    this.store.save();
    this.store.reload();
},

Note: The scope of "this" is a Grid Component.

So, is it suppose to be like that? Or my configuration problem?
I'm using Extjs 3.3.1, and according to the documentation of batch under Ext.data.Store,

If Store is RESTful, the DataProxy is also RESTful, and a unique transaction is generated for each record.

I wish this is my configuration problem.

Note: I tried with listful, encode, writeAllFields, encodeDelete in Ext.data.JsonWriter... with no hope

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评论(2

关于从前 2024-10-13 07:17:05

只是对于那些可能想知道为什么它不是批处理的人:

至于文档所述,

如果 Store 是 RESTful,则 DataProxy 也是 RESTful,并且会为每条记录生成唯一的事务。

如果您查看 /src/data/Store.jsExt.data.Store 的源代码,这是正确的,

第 309 行,在 @constructor

// If Store is RESTful, so too is the DataProxy
if (this.restful === true && this.proxy) {
    // When operating RESTfully, a unique transaction is generated for each record.
    // TODO might want to allow implemention of faux REST where batch is possible using RESTful routes only.
    this.batch = false;
    Ext.data.Api.restify(this.proxy);
}

就是为什么我意识到当我使用restful时,我的batch永远不会更改为true

Just for those who might wonder why it's not batch:

As for the documentation stated,

If Store is RESTful, the DataProxy is also RESTful, and a unique transaction is generated for each record.

Which is true if you look into the source code of Ext.data.Store in /src/data/Store.js

Line 309, in @constructor

// If Store is RESTful, so too is the DataProxy
if (this.restful === true && this.proxy) {
    // When operating RESTfully, a unique transaction is generated for each record.
    // TODO might want to allow implemention of faux REST where batch is possible using RESTful routes only.
    this.batch = false;
    Ext.data.Api.restify(this.proxy);
}

And so this is why I realize when I use restful, my batch will never get changed to true.

极致的悲 2024-10-13 07:17:05

您正确阅读了文档;它应该是这样工作的。每当选择是否在网格上使用 RESTful 存储时,都需要考虑这一点。如果您需要批量操作,那么 RESTful 商店不是您的朋友。对不起。

You read the docs correctly; it is supposed to work that way. It's something to consider whenever choosing whether to use RESTful stores on your grids. If you're going to need batch operations, RESTful stores are not your friends. Sorry.

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