NestJS - Pipes
Which of the following is the correct way to use
ParseIntPipe in a NestJS controller method parameter?Which of the following is the correct way to use ParseIntPipe in a NestJS controller method parameter?
easy📝 Syntax Q12 of 15
Step-by-Step Solution
Solution:
Step 1: Check the parameter decorator and pipe usage
Using @Param('id', ParseIntPipe) applies the pipe to convert the 'id' route parameter.Step 2: Match the parameter type with the pipe's output
ParseIntPipe converts input to a number, so the parameter type must benumber.Final Answer:
@Param('id', ParseIntPipe) id: number -> Option CQuick Check:
ParseIntPipe converts to number, so type = number [OK]
Quick Trick: ParseIntPipe means parameter type must be number [OK]
Common Mistakes:
- Using string type with ParseIntPipe
- Applying pipe to wrong decorator like @Body for route param
- Assigning boolean type with ParseIntPipe
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