[Solved] Given this schema snippet:@Schema() export class Book { @Prop() author: string; @Prop({ required: true }) pages: number; }What happens if you try to save a Book without pages? | NestJS

NestJS - Database with Prisma

Given this schema snippet:

@Schema()
export class Book {
  @Prop()
  author: string;

  @Prop({ required: true })
  pages: number;
}

What happens if you try to save a Book without pages?

AThe save will throw a syntax error

BThe save will succeed and <code>pages</code> will be undefined

CThe save will succeed and <code>pages</code> will default to 0

DThe save will fail because <code>pages</code> is required

Step-by-Step Solution

Solution:

Step 1: Understand the required: true option
The pages property is marked as required, so it must be provided when saving.
Step 2: Predict behavior when missing required property
Omitting pages causes validation to fail and the save operation to be rejected.
Final Answer:
The save will fail because pages is required -> Option D
Quick Check:
Required props must be present [OK]

Quick Trick: Required props block save if missing [OK]

Common Mistakes:

Master "Database with Prisma" in NestJS

9 interactive learning modes - each teaches the same concept differently

More NestJS Quizzes

Given this schema snippet: