FHIR：根据最后一个返回患者资源列表

Question

Need some advice and help from you!

Two questions.

1. how can I retrieve a list of patient resources with 30 _counts and sorted by last modified date? I don't have any searching parameters such as identifier, family and given;

2. since my application in browser is a single page application, when the user scroll down and all the first 30 patients have been shown, I will make another call to get the next 30 patients. I don't need the first 30 patients and just want the records from 31 to 60. What parameters should I used in this paging search? Do we have something like "?_count=30& _page=2 ". Similarly, if I need the page 100, I don't want the servers sending me the first 99 pages.

Thanks in advance. Autorun

Answer 1

GET [baseUrl]/Patient?_count=30&sort=_lastUpdated

The response will be a Bundle. Look at the Bundle.link with a Bundle.link.relation of "next". The Bundle.link.url will be the URL to use to get the next "page" of content. The format of the URL is undefined and will be server-specific.

Be aware that _count only constrains the base resource. If you query Patient and do a _revinclude on Observation, you'll get 30 patients - but you'll also get all the observations for all 30 of those patients - which could be 10k+ rows in your result set - so be careful with _include and _revinclude.