go_example10.go

package products

import (
    "go-fiber-api-docker/pkg/common/models"

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

type UpdateProductRequestBody struct {
    Name  string `json:"name"`
    Stock int32  `json:"stock"`
    Price int32  `json:"price"`
}

func (h handler) UpdateProduct(c *fiber.Ctx) error {
    id := c.Params("id")
    body := UpdateProductRequestBody{}

    // getting request's body
    if err := c.BodyParser(&body); err != nil {
        return fiber.NewError(fiber.StatusBadRequest, err.Error())
    }

    var product models.Product

    if result := h.DB.First(&product, id); result.Error != nil {
        return fiber.NewError(fiber.StatusNotFound, result.Error.Error())
    }

    product.Name = body.Name
    product.Stock = body.Stock
    product.Price = body.Price

    // save product
    h.DB.Save(&product)

    return c.Status(fiber.StatusOK).JSON(&product)
}