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Managing Mongoose Projections in NestJS

The Backstory While building a module in NestJS, I encountered a common dilemma: How to secure sensitive data in populated documents without overhauling our existing architecture? Here’s how I addressed it pragmatically, while acknowledging room for improvement. The Problem, Simplified Combined Auth/Profile Models: User authentication and profile data lived in a single schema (a known anti-pattern, but we all cut corners sometimes

Feb 18, 2025 - 20:35
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Managing Mongoose Projections in NestJS

The Backstory

While building a module in NestJS, I encountered a common dilemma: How to secure sensitive data in populated documents without overhauling our existing architecture?

Here’s how I addressed it pragmatically, while acknowledging room for improvement.

The Problem, Simplified

  1. Combined Auth/Profile Models: User authentication and profile data lived in a single schema (a known anti-pattern, but we all cut corners sometimes
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