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Which of the following is true about writable nested serializers in Django REST Framework?

easy📝 Conceptual Q2 of 15
Django - DRF Advanced Features
Which of the following is true about writable nested serializers in Django REST Framework?
AThey require no additional methods to handle nested writes.
BThey allow creating and updating related objects through the parent serializer.
CThey automatically validate nested data without extra code.
DThey only support read-only nested data and cannot save changes.
Step-by-Step Solution
Solution:

  1. Step 1: Understand writable nested serializers

    Writable nested serializers enable creating or updating related objects via the parent serializer.

  2. Step 2: Evaluate options

    They allow creating and updating related objects through the parent serializer. correctly states this. Options A, B, and C are incorrect because writable nested serializers need extra code to handle writes and validation.

  3. Final Answer:

    They allow creating and updating related objects through the parent serializer. -> Option B

  4. Quick Check:

    Writable nested serializers = Support nested create/update [OK]
Quick Trick: Writable nested serializers handle nested create/update with extra code [OK]
Common Mistakes:
MISTAKES
  • Assuming nested serializers are always read-only
  • Believing nested writes need no custom methods
  • Thinking validation is automatic for nested writes

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