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You want to add a virtual property fullName combining firstName and lastName in a NestJS schema. How should you do it?

hard📝 Application Q9 of 15
NestJS - Database with Prisma
You want to add a virtual property fullName combining firstName and lastName in a NestJS schema. How should you do it?
ANestJS schemas do not support virtual properties
BAdd <code>@Prop()</code> decorated property <code>fullName</code> and set it manually
CUse schema options with <code>virtuals</code> and define a getter function
DDefine <code>fullName</code> as a method inside the schema class
Step-by-Step Solution
Solution:

  1. Step 1: Understand virtual properties in Mongoose

    Virtuals are properties not stored in DB but computed dynamically using getter functions.

  2. Step 2: Implement virtuals in NestJS schema

    Use schema options to define virtuals and add a getter combining firstName and lastName.

  3. Final Answer:

    Use schema options with virtuals and define a getter function -> Option C

  4. Quick Check:

    Virtuals need schema getter functions [OK]
Quick Trick: Use schema virtuals with getters for computed fields [OK]
Common Mistakes:
  • Trying to store virtuals as real properties
  • Defining virtuals as normal methods
  • Assuming virtuals are unsupported

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