主干关系的事件不触发？ [英] Backbone relational events not firing?

问题描述

class TheModel extends Backbone.RelationalModel
    relations:[
        type: Backbone.HasMany
        key: 'subModels'
        relatedModel: SubModel
        collectionType: SubModels
        reverseRelation:
            key: 'TheModel'
    ]

themodel = new the TheModel({subModels:[{#stuff},{#stuff},{#stuff}]})

我对 createModels让 themodel.get（'子模型'）返回模型的集合。

I have createModels on so themodel.get('subModels') returns a collection of models.

现在如果我通过改变子模型数据转换成为MyModel

Now if I pass changed subModel data into mymodel

themodel.set({subModels:[{changedstuff},{stuff},{stuff}]})

不应该 themodel 抛出一个变更事件？它并不适合我。

Shouldn't themodel throw a change event? It doesn't for me.

更何况，如果我通过相同的数据转换成为MyModel

More so if I pass identical data into mymodel

themodel.set({subModels:[{samestuff},{samestuff},{samestuff}]})

themodel.attributes.subModels 抛出添加和更新事件，即使没有什么是新的。

themodel.attributes.subModels throws add and update events, even though nothing is new.

我不知道为什么这些问题发生，任何帮助将是巨大的，谢谢!!!!

I'm not sure why these issues are happening, any help would be great, thanks!!!!

推荐答案

如果您通过设置一个新的集合，骨干关系的意愿（目前）复位这样的整体关系只需更换而不是检查整个采集，差异。所以它会火删除事件目前所有的子模型，然后火添加为每个新的事件。

If you reset a whole relation like that by setting a new collection, Backbone-relational will (at the moment) just replace the whole collection, instead of checking for differences. So it'll fire a remove event for all current subModels, then fire add events for each new one.

我得到更改事件虽然与下面code（如果贴code包含一个完整的例子，虽然它会帮助;）

I do get change events though, with the following code (it would help if posted code contains a complete example though ;)

var SubModel = Backbone.RelationalModel.extend({});

var TheModel = Backbone.RelationalModel.extend({
    relations: [{
        type: Backbone.HasMany,
        key: 'subModels',
        relatedModel: SubModel,
        reverseRelation: {
            key: 'TheModel'
        }
    }]
});

themodel = new TheModel({subModels: [{ id: 5 },{id: 7},{id: 8}]})

themodel.bind( 'change', function() {
        console.debug( 'change; args=%o', arguments );
    });
themodel.bind( 'change:subModels', function() {
        console.debug( 'change:subModels; args=%o', arguments );
    });
themodel.bind( 'update:subModels', function() {
        console.debug( 'update:subModels; args=%o', arguments );
    });
themodel.bind( 'add:subModels', function() {
        console.debug( 'add:subModels; args=%o', arguments );
    });
themodel.bind( 'remove:subModels', function() {
        console.debug( 'remove:subModels; args=%o', arguments );
    }); 


console.debug( 'set new subModels' );
themodel.set( {subModels: [{ id: 5 },{id: 7},{id: 9}] } )

这将产生以下的输出：

set new subModels
change:subModels; args=[Object { _queue={...}, attributes={...}, _escapedAttributes={...}, more...}, [Object { id=5}, Object { id=7}, Object { id=9}], Object {}]
change; args=[Object { _queue={...}, attributes={...}, _escapedAttributes={...}, more...}, undefined]
remove:subModels; args=[Object { _queue={...}, attributes={...}, _escapedAttributes={...}, more...}, Object { length=3, models=[3], _byId={...}, more...}, Object { _related={...}}]
remove:subModels; args=[Object { _queue={...}, attributes={...}, _escapedAttributes={...}, more...}, Object { length=3, models=[3], _byId={...}, more...}, Object { _related={...}}]
remove:subModels; args=[Object { _queue={...}, attributes={...}, _escapedAttributes={...}, more...}, Object { length=3, models=[3], _byId={...}, more...}, Object { _related={...}}]
add:subModels; args=[Object { _queue={...}, attributes={...}, _escapedAttributes={...}, more...}, Object { length=3, models=[3], _byId={...}, more...}, Object {}]
add:subModels; args=[Object { _queue={...}, attributes={...}, _escapedAttributes={...}, more...}, Object { length=3, models=[3], _byId={...}, more...}, Object {}]
add:subModels; args=[Object { _queue={...}, attributes={...}, _escapedAttributes={...}, more...}, Object { length=3, models=[3], _byId={...}, more...}, Object {}]
update:subModels; args=[Object { _queue={...}, attributes={...}, _escapedAttributes={...}, more...}, Object { length=3, models=[3], _byId={...}, more...}, Object {}]

如果您没有看到这些变化的事件，你可以检查其骨干网和骨干网的关系，你正在使用的版本？

If you don't see these change events, could you check which versions of backbone and backbone-relational you're using?

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