ASP.NET Core Web API Interview Question #44

What does CreatedAtAction do?

DTOs, Model Binding, Validation & API Responses Junior Beginner

Quick Interview Answer

CreatedAtAction returns HTTP 201 Created and generates a Location header pointing to another action, typically the GET endpoint for the newly created resource. It can also include the created representation in the response body.

Detailed Explanation

This is a strong pattern for resource creation because the client immediately knows how to retrieve the newly created resource.

Code Example

var product = await _service.CreateAsync(request, token);

return CreatedAtAction(
    nameof(GetById),
    new { id = product.Id },
    product);