如何使用loopback.io在REST中包含相关实体 [英] How to include related entities in REST with loopback.io

问题描述

我正在使用Strongloop的环回工具来创建REST服务.我想知道如何定义请求模型时要返回的相关实体.

I'm using Strongloop's loopback tool to create a REST service. I'm wondering how to define what related entities to return when requesting a model.

我在文档中看到您可以发送诸如GET /api/members?filter[include]=posts之类的请求，并且该请求将返回相关的帖子模型，我发现您可以发出诸如GET /api/members?filter[include]=posts&filter[include]=comments之类的请求来获取帖子和评论，但是这里有一个在代码或生成的json文件中定义您想要某种关系的方法，该方法总是在请求模型时返回的?

I see in the docs that you can send a request like GET /api/members?filter[include]=posts and that will return the related post models, and I discovered that you can make a request like GET /api/members?filter[include]=posts&filter[include]=comments to get posts and comments, but is there a way to define either in code or the generated json file that you'd like a certain relation to always be returned when requesting a model?

推荐答案

预设的过滤器属性称为默认范围.我们有一个待处理的拉取请求来支持这一点.请参阅 https://github.com/strongloop/loopback-datasource-juggler/pull /296 .

The preset filter properties are referred as default scope. We have a pending pull request to support that. Please see https://github.com/strongloop/loopback-datasource-juggler/pull/296.

作为发布此功能之前的解决方法，您可以使用beforeRemote挂钩使用默认范围更新过滤器对象.请参见 http://docs.strongloop.com/display/LB/Defining+remote+钩子.

As a workaround before the feature is released, you can use beforeRemote hooks to update the filter object with your default scope. See http://docs.strongloop.com/display/LB/Defining+remote+hooks.

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