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How would you programmatically generate a self link for a resource in a REST API if you have the base URL and resource ID? Choose the best approach.

hard🚀 Application Q9 of Q15
Rest API - HATEOAS and Linking
How would you programmatically generate a self link for a resource in a REST API if you have the base URL and resource ID? Choose the best approach.
AConcatenate base URL string with '/' and resource ID converted to string
BAdd resource ID as a query parameter to the base URL
CUse the base URL only without resource ID
DAppend '/self' to the base URL
Step-by-Step Solution
Solution:
  1. Step 1: Understand self link URL format

    Self link URL is the base URL plus the resource ID as a path segment.
  2. Step 2: Choose the correct method to build URL

    Concatenating base URL, '/' and resource ID string forms the correct URL.
  3. Final Answer:

    Concatenate base URL string with '/' and resource ID converted to string -> Option A
  4. Quick Check:

    Build self link by string concatenation [OK]
Quick Trick: Build self link by joining base URL and ID with slash [OK]
Common Mistakes:
MISTAKES
  • Using query parameters instead of path
  • Ignoring resource ID in URL
  • Appending '/self' incorrectly

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