ember.js – 使用Ember Data将REST请求发送到嵌套的API端点URL

如果你想象两个模型定义如下：

App.User = DS.Model.extend({
    emails: DS.hasMany('email',{embedded: 'always'}),});

App.Email = DS.Model.extend({
    address: DS.attr('string'),alias: DS.attr('string'),user: DS.belongsTo('user')
});

…和REST适配器：

App.UserAdapter = DS.RESTAdapter.extend({
    url: 'http://whatever.com',namespace: 'api/v1'
});

…路由设置如下：

App.Router.map(function () {
    this.route('index',{ path: '/' });
    this.resource('users',function () {
        this.route('index');
        this.route('add');
        this.resource('user',{ path: ':user_id' },function () {
            this.route('delete');
            this.route('edit');
            this.resource('emails',function () {
                this.route('index');
                this.route('add');
                this.resource('email',{ path: ':email_id' },function () {
                    this.route('delete');
                    this.route('edit');
                });
            });
        });
    });
});

…以及用于保存已编辑电子邮件的控制器操作,如下所示：

App.EmailEditController = Ember.ObjectController.extend({
    actions: {
        save: function () {
            var self = this;
            var email = this.get('model');
            email.save().then(function(){
                self.transitionToRoute('email',email);
            });
        }
    }
});

这个问题是……

PUT请求被发送到：http://whatever.com/api/v1/emails/[email_id]

但是,正确的API端点是：http://whatever.com/api/v1/users/[user_id]/emails/[email_id]

解决此问题的正确方法是什么？

解决方法

我想出的解决方案就是在REST适配器中重写createRecord,updateRecord和deleteRecord.

我为受影响的模型添加了“父”属性.在* Record钩子中,我可以检查是否已设置并相应地编辑发送到buildURL的路径.

我的createRecord,updateRecord和deleteRecord挂钩现在看起来类似于：

App.UserAdapter = DS.RESTAdapter.extend({

    createRecord: function (store,type,record) {

        if (!record.get('parent') || null === record.get('parent')) {
            return this._super(store,record);
        }

        var data = {};
        var serializer = store.serializerFor(type.typeKey);

        var parent_type = record.get('parent');
        var parent_id = record.get(parent_type).get('id');
        var child_type = Ember.String.camelize(
            Ember.String.pluralize(
                type.typeKey.split(
                    record.get('parent')
                ).pop()
            )
        );

        var path = Ember.String.pluralize(parent_type) + '/' + parent_id + '/' + child_type;

        serializer.serializeIntoHash(data,record,{ includeId: true });

        return this.ajax(this.buildURL(path),"POST",{ data: data });
    },updateRecord: function(store,record) {

        if(!record.get('parent') || null === record.get('parent')){
            return this._super(store,record);
        var id = record.get('id');

        return this.ajax(this.buildURL(path,id),"PUT",deleteRecord: function (store,record) {

        if (!record.get('parent')) {
            return this._super(store,record);
        }

        var parent_type = record.get('parent');
        var parent_id = record.get('parent_id');
        var child_type = Ember.String.camelize(
            Ember.String.pluralize(
                type.typeKey.split(
                    record.get('parent')
                ).pop()
            )
        );

        var path = Ember.String.pluralize(parent_type) + '/' + parent_id + '/' + child_type;
        var id = record.get('id');

        return this.ajax(this.buildURL(path,"DELETE");
    }

});

示例中的电子邮件模型类似于：

App.Email = DS.Model.extend({
    address: DS.attr('string'),user: DS.belongsTo('user'),parent: 'user'
});