[Solved] Which of the following is the correct way to represent a link to a 'self' resource in HAL JSON? — Ans: "_links": { "self": { "href": "/orders/123" } } | Rest API

Rest API - HATEOAS and Linking

Which of the following is the correct way to represent a link to a 'self' resource in HAL JSON?

A"_links": { "self": { "href": "/orders/123" } }

B"links": { "self": "/orders/123" }

C"_links": { "self": "/orders/123" }

D"_link": { "href": "/orders/123" }

Step-by-Step Solution

Solution:

Step 1: Recall HAL syntax for links
HAL requires a _links object with named links, each having an href property.
Step 2: Check each option's structure
"_links": { "self": { "href": "/orders/123" } } correctly uses _links with self containing an object with href. Others miss underscores, use wrong keys, or omit href.
Final Answer:
"_links": { "self": { "href": "/orders/123" } } -> Option A
Quick Check:
HAL link = _links + href [OK]

Quick Trick: HAL links always use _links and href keys [OK]

Common Mistakes:

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Which of the following is the correct way to represent a link to a 'self' resource in HAL JSON?