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Question

我一直在尝试用一个普通的模型来创建两个集合。我得到了以下错误：

"Uncaught enyo.Store.addRecord:添加到存储类app.ImageModel的重复记录，primaryKey设置为id，而67774271的值相同，如果没有将存储的ignoreDuplicates标志设置为true，则无法共存。“

以下是我定义的两个集合..。

enyo.kind({
    name: "app.FeatureCollection",
    kind: "enyo.Collection",
    model: "app.ImageModel",
    defaultSource: "appF",
    ...
    ...
});


enyo.kind({
    name: "app.SearchCollection",
    kind: "enyo.Collection",
    model: "app.ImageModel",
    defaultSource: "appS",
    ...
    ... 
});

我所使用的模型如下：

 enyo.kind({
    name: "app.ImageModel",
    kind: "enyo.Model",
    readOnly: true,
    ....
    ....
 });

有一次，我是这样设置的：

this.set("data", new app.FeatureCollection());

而在另一个，

this.set("data", new app.SearchCollection());

我无法找出什么会产生错误。我甚至尝试将"ignoreDuplicates“设置为model...but中的true，但错误还是出现了。任何我可能出错的建议。

Answer 1

ignoreDuplicates标志应该设置在enyo.Store上，而不是enyo.Model上。

enyo.store.ignoreDuplicates = true;

您是否使用fetch方法enyo.Collection来检索数据？如果是这样的话，您可以考虑在获取调用中将strategy属性设置为merge，这样您就可以为数据集中的每个唯一图像创建一个记录，即：

myCollection.fetch({strategy: "merge", success: function(rec, opts, res) {
    // do something after data is retrieved
}});

Answer 2

我没有发现你提供的代码片段有问题。我在jsFiddle上创建了一个示例，它按预期工作。

http://jsfiddle.net/z7WwZ/

也许问题在你的代码的其他部分？

enyo.kind({
    name: "app.FeatureCollection",
    kind: "enyo.Collection",
    model: "app.MyModel"
});


enyo.kind({ 
    name: "app.SearchCollection",
    kind: "enyo.Collection",
    model: "app.MyModel"
});

enyo.kind({
    name: "app.MyModel",
    kind: "enyo.Model",
    readOnly: true,
    defaults: {
        firstName: "Unknown",
        lastName: "Unknown"
    }
});

enyo.kind({
    name: "App",
    components: [],
        bindings: [],
    create: enyo.inherit(function (sup) {
        return function () {
            sup.apply(this, arguments);
            this.collection1 = new app.FeatureCollection(this.data1);
            enyo.log("Collection1(0) >>> " + this.collection1.at(0).get("lastName"));
            this.collection1.at(0).set("lastName", "Smith");
            enyo.log("Collection1(0) >>> " + this.collection1.at(0).get("lastName"));

        this.collection2 = new app.SearchCollection(this.data2);
        enyo.log("Collection2(0) >>> " + this.collection2.at(0).get("lastName"));
        this.collection1.at(0).set("lastName", "Jones");
        enyo.log("Collection2(0) >>> " + this.collection1.at(0).get("lastName"));
        };
    }),
    data1: [{
        firstName: "Hall",
        lastName: "Caldwell"
    }, {
        firstName: "Felicia",
        lastName: "Fitzpatrick"
    }, {
        firstName: "Delgado",
        lastName: "Cole"
    }],

    data2: [{
        firstName: "Alejandra",
        lastName: "Walsh"
    }, {
        firstName: "Marquez",
        lastName: "James"
    }, {
        firstName: "Barr",
        lastName: "Lott"
    }]

});

new App().renderInto(document.body);