NestJS - Pipes
Which of the following is the correct way to apply
DefaultValuePipe to a query parameter named page with a default of 1?Which of the following is the correct way to apply DefaultValuePipe to a query parameter named page with a default of 1?
easy📝 Conceptual Q2 of 15
Step-by-Step Solution
Solution:
Step 1: Check correct instantiation of DefaultValuePipe
DefaultValuePipe must be instantiated with new and passed the default value.Step 2: Verify syntax for @Query decorator
The correct syntax is @Query('param', new DefaultValuePipe(defaultValue)) param: type.Final Answer:
@Query('page', new DefaultValuePipe(1)) page: number -> Option BQuick Check:
Use new DefaultValuePipe(default) in decorator [OK]
Quick Trick: Always use 'new' with DefaultValuePipe [OK]
Common Mistakes:
- Omitting 'new' keyword when creating DefaultValuePipe
- Assigning default value directly in parameter instead of pipe
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