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Optional Parameter Example

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This project demonstrates how to handle optional parameters in a Go application using the Fiber framework.

Prerequisites​

Ensure you have the following installed:

Setup​

  1. Clone the repository:

    git clone https://github.com/gofiber/recipes.git
    cd recipes/optional-parameter

  2. Install dependencies:

    go get

Running the Application​

  1. Start the application: 
    go run main.go

Example​

Here is an example of how to handle optional parameters in a Fiber application:

package main

import (
    "github.com/gofiber/fiber/v2"
)

func main() {
    app := fiber.New()

    app.Get("/user/:id?", func(c *fiber.Ctx) error {
        id := c.Params("id", "defaultID")
        return c.SendString("User ID: " + id)
    })

    app.Listen(":3000")
}

In this example:

  • The :id? parameter in the route is optional.
  • If the id parameter is not provided, it defaults to "defaultID".

References​