Rest API - Error Handling
You want to design an error response structure that includes an error code, a message, and optionally a list of field errors for validation issues. Which JSON structure below correctly supports this?
You want to design an error response structure that includes an error code, a message, and optionally a list of field errors for validation issues. Which JSON structure below correctly supports this?
hard📝 Application Q15 of 15
Step-by-Step Solution
Solution:
Step 1: Understand the need for multiple field errors
We want a list of objects, each with a field name and its error message.Step 2: Check each option's fields format
{"error": {"code": 422, "message": "Validation failed", "fields": [{"field": "email", "error": "Invalid format"}]}} uses an array of objects with field and error keys, which is clear and extensible.Step 3: Identify why others are incorrect
{"error": {"code": 422, "message": "Validation failed", "fields": "email: Invalid format"}} uses a string instead of structured data; {"error": {"code": 422, "message": "Validation failed", "fields": {"email": "Invalid format"}}} uses an object but not a list; {"error": {"code": 422, "message": "Validation failed", "fields": ["email", "Invalid format"]}} uses a list mixing field and message without keys.Final Answer:
{"error": {"code": 422, "message": "Validation failed", "fields": [{"field": "email", "error": "Invalid format"}]}} -> Option AQuick Check:
Use array of objects for detailed field errors [OK]
Quick Trick: Use array of objects for multiple field errors [OK]
Common Mistakes:
- Using plain strings instead of structured objects
- Mixing field names and messages in arrays without keys
- Using object instead of list for multiple errors
Master "Error Handling" in Rest API
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