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ExtJS,store,HasMany - BelongsTo和更新過程:howto?

[英]ExtJS, store, HasMany - BelongsTo and update process: howto?

我有兩個數據模型: Writer.AttributValeurWriter.Produit

Writer.Produit擁有HasMany / BelongsTo與關系Writer.AttributValeur

因此定義是這樣的:

Ext.define('Writer.AttributValeur', {
    extend: 'Ext.data.Model',
    fields: [{
            name: 'id',
            type: 'int',
            useNull: true
        },  
        'description',
        'val'
    ],  
    belongsTo: 'Writer.Produit'
});

Ext.define('Writer.Produit', {
    extend: 'Ext.data.Model',
    fields: [{
            name: 'id',
            type: 'int',
            useNull: true
        },  
        'titre',
        'description'
    ],
    hasMany: {
        model: 'Writer.AttributValeur',
        name: 'attributs'
    }   
});

var store = Ext.create('Ext.data.Store', {
    model: 'Writer.Produit',
    autoLoad: true,
    autoSync: true,
    proxy: {
        type: 'ajax',
        api: {
            read: 'json/liste_view/',
            create:  'json/item/?mode=create',
            update:  'json/item/?mode=update',
            destroy: 'json/item/?mode=destroy'
        },
        reader: {
            type: 'json',
            successProperty: 'success',
            root: 'data',
            messageProperty: 'message'
        },
        writer: {
            type: 'json',
            writeAllFields: true,
            root: 'data'
        }
    }
});

現在,當我閱讀文件,詢問“Produits”時,有一個完美的AJAX答案:

AJAX的答案非常有效

在每個“行”中,有許多Writer.AttributValeur (我把它們別名為“attributs”見圖):

很多Writer.AttributValeur

問題是當我在這個“ attributs ”字段中插入Writer.AttributValeur時,如下所示:

form.getRecord().attributs().add(newrecord);

它工作得很好但是當我調用store.sync()沒有任何反應。 所以我手工將記錄標記為dirty

form.getRecord().attributs().add(newrecord);
form.getRecord().setDirty();
form.getRecord().store.sync();

現在已經發送了,但是發送的是attributs 看到:

顯示沒有發送attributs

如何將此“添加”到更新過程中?

這是覆蓋的東西:

Ext.data.writer.Json.override({
  {*/*
     * This function overrides the default implementation of
     * json writer. Any hasMany relationships will be submitted
     * as nested objects
     */*}
    getRecordData: function(record) {
        var me = this, i, association, childStore, data = {}; 
        data = me.callParent([record]);

        /* Iterate over all the hasMany associations */
        for (i = 0; i < record.associations.length; i++) {
            association = record.associations.get(i);
            if (association.type == 'hasMany')  {
                data[association.name] = []; 
                childStore = eval('record.'+association.name+'()');

                //Iterate over all the children in the current association
                childStore.each(function(childRecord) {

                    //Recursively get the record data for children (depth first)
                    var childData = this.getRecordData.call(this, childRecord);
                    if (childRecord.dirty | childRecord.phantom | (childData != null)){
                        data[association.name].push(childData);
                        record.setDirty();
                    }   
                }, me);
            }   
        }   
        return data;
    }   
}); 

這是我如何使用它的一個例子:

var store = Ext.create('Ext.data.Store', {
    model: 'Writer.Produit',
    autoLoad: true,
    autoSync: true,
    proxy: {
        type: 'ajax',
        api: {
            read: 'json/liste_view/',
            create:  'json/item/?mode=create',
            update:  'json/item/?mode=update',
            destroy: 'json/item/?mode=destroy'
        },
        reader: {
            type: 'json',
            successProperty: 'success',
            root: 'data',
            messageProperty: 'message'
        },
        writer: new Ext.data.writer.Json( {
            type: 'json',
            writeAllFields: true,
            root: 'data'
        })
    }
});

當我在這里添加一個嵌套記錄時,我是如何使用attributs oneToMany關聯的attributs (請參閱我的問題)。 重要的是要注意我設置Dirty 所有嵌套記錄,以便我確定它們已被發送:

var rec = this.formDst.getRecord(),
    atts = rec.attributs();
atts.add(sel);
for (var i = 0; i <atts.data.items.length; i++) {
    atts.data.items[i].setDirty();
};
rec.setDirty();
rec.store.sync();
this.close();

我喜歡簡單的解決方案所以我還添加了belongsTo支持:

Ext.data.writer.Json.override({
getRecordData:function (record) {

    var me = this, i, association, childStore, data = {};
    data = me.callParent([record]);

    /* Iterate over all the hasMany associations */
    for (i = 0; i < record.associations.length; i++) {

        association = record.associations.get(i);
        if (association.type == 'hasMany') {
            data[association.name] = [];
            childStore = eval('record.' + association.name + '()');

            //Iterate over all the children in the current association
            childStore.each(function (childRecord) {

                //Recursively get the record data for children (depth first)
                var childData = this.getRecordData.call(this, childRecord);
                if (childRecord.dirty | childRecord.phantom | (childData != null)) {
                    data[association.name].push(childData);
                    record.setDirty();
                }
            }, me);
        }

        if(association.type == 'belongsTo') {

            // we need ucfirst
            var method = 'get' + association.name.charAt(0).toUpperCase() + association.name.slice(1);
            var childRecord = eval('record.' + method + '()');
            var childData = this.getRecordData.call(this, childRecord);

            if (childRecord.dirty | childRecord.phantom | (childData != null)) {
                data[association.name] = childData;
                record.setDirty();
            }

        }

    }
    return data;
}

});

從sencha文檔 - 看起來你需要在form.getRecord().attributs()上調用sync而不是在主記錄上。 你能試試嗎?

http://docs.sencha.com/ext-js/4-0/#!/api/Ext.data.HasManyAssociation

4.0x中不支持此功能,據我所知,尚未在4.1的功能路徑上使用此功能。 然而,已經有一些嘗試解決了這個問題,請看這個主題: http//www.sencha.com/forum/showthread.php? 141957-Saving-objects-that-are-linked-hasMany-relation-with-a- single -商店

表格的另一個有趣的方法:Jamie Sutherland的https://stackoverflow.com/a/9891694/834424

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