fiber: error handling for list and get endpoints

Author: KenanBek

README.md

@@ -57,7 +57,7 @@ Additionaly, some examples with:
 
 | Feature                                            | gin | echo | iris | fiber | micro | goa | gorilla |
 |----------------------------------------------------| --- | ---- | ---- | ----- | ----- | --- | ------- |
-| Final Project Structure                            | ⏳  | ⏳   | ⏳   | ⏳     | ⏳    | ⏳   | ⏳      |
+| Final Project Structure                            | ⏳  | 👷🏼‍♂️   | ⏳   | ⏳     | ⏳    | ⏳   | ⏳      |
 | "Hello, World!" and simple JSON response           | ⏳  | ✅   | ✅   | ✅     | ⏳    | ⏳   | ⏳      |
 | CRUD JSON API for [the example entity][folder-pkg] | ⏳  | ✅   | ✅   | 👷🏼‍♂️     | ⏳    | ⏳   | ⏳      |
 | Paging and error handling                          | ⏳  | ✅   | ✅   | ✅     | ⏳    | ⏳   | ⏳      |

fiber/server.go

@@ -35,6 +35,7 @@ func main() {
 			// c.JSON(pkg.TextResponse{Message: err.Error()})
 			// return fiber.NewError(fiber.StatusInternalServerError, err.Error())
 
+			// TODO: Replace 500 error with 4xx for paging related errors.
 			errMsg := pkg.TextResponse{Message: err.Error()}
 			return c.Status(fiber.StatusInternalServerError).JSON(errMsg)
 		}
@@ -47,8 +48,8 @@ func main() {
 
 		entity, err := entitiesRepo.Get(entityID)
 		if err != nil {
-			c.JSON(pkg.TextResponse{Message: err.Error()})
-			return fiber.ErrInternalServerError
+			errMsg := pkg.TextResponse{Message: err.Error()}
+			return c.Status(fiber.StatusInternalServerError).JSON(errMsg)
 		}
 
 		if entity == nil {