Fix Django Post Creation API

Fixing the Post Creation Endpoint — Robust Input Handling and Author Association In a Django + React blogging platform, the POST /api/posts/ endpoint might fail silently when required fields are missing, or when the incoming JSON does not include optional fields. The core issue is that the original implementation likely accessed fields directly with bracket notation (e.g., request.data['title']), which throws an exception if a key is absent, instead of validating presence…