Best Practices in Retrieving Related Data in a REST API

问题

So I have a REST API in which I Have a resource in which other resources are linked to (related models, in programming point of view).

So how I am doing it right now is that whenever I request for a resource, related resources are referenced via URLs ('/related_data/related_data_id/').

However, I worry that, let's say there are 5 related resources to the one I'm retrieving, is that I would perform 5 GET requests. I am writing an iPhone client and I'm wondering if this is how to properly do it using REST (that I'm returning URLs). A sample JSON response is this:

{
"meta": {
            "limit": 20, 
            "next": null, 
            "offset": 0, 
            "previous": null, 
            "total_count": 2
        }, 
"objects": [
    {
        "away_team": "/api/team/3/", 
        "country": "/api/country/1/", 
        "event_date": "2011-08-16", 
        "event_time": "06:00:00", 
        "event_timezone": "GMT", 
        "home_team": "/api/team/4/", 
        "id": "1", 
        "level": "/api/level/4/", 
        "resource_uri": "/api/event/1/", 
        "tournament": "/api/tournament/1/"
    }, 
    {
        "away_team": "/api/team/4/", 
        "country": "/api/country/1/", 
        "event_date": "2011-09-29", 
        "event_time": "12:00:00", 
        "event_timezone": "UTC", 
        "home_team": "/api/team/3/", 
        "id": "2", 
        "level": "/api/level/1/", 
        "resource_uri": "/api/event/2/", 
        "tournament": "/api/tournament/6/"
    }
]
}

Is this a proper way of doing it in REST, considering that "each URI must map to a resource" and all those things?

I am using Django and django-tastypie

Thanks in advance!

回答1:

Yes; that is proper if the related resources are updated independently. REST architectures depend on caching for performance, and therefore work best with resources which act as atomic entities (see more here). That way, you can update resource B and have its representation be fresh without having to update resource A. See this SO comment for more design details.

来源：https://stackoverflow.com/questions/7460934/best-practices-in-retrieving-related-data-in-a-rest-api

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rest

tastypie