Custom Pipe
Explore how to create and implement a custom validation pipe in NestJS to ensure specific input values, like language codes, meet defined criteria. Understand the PipeTransform interface and apply the pipe within a controller to improve API data validation and error management.
We'll cover the following...
We'll cover the following...
Custom pipe
What if we want to create a custom pipe? Suppose we want to create a pipe to ensure that the language provided in the book is either en (English) or fr (French).
Setup
To create ...