Select Tag with Object - Thymeleaf and Spring MVC

Question

I\'m trying to change the code of this example thymeleafexamples-stsm, so I changed enum type for class type:

Type.java

public class Type { 

    p         


        

Answer 1

That error message basically says Spring don't know how to convert the string thymeleafexamples.stsm.business.entities.Type@2c08cec0 into an instance of Type. This is a bug on your code because it doesn't make any sense trying to do so.

You're not supposed to use the toString() value of Object as a form dropdown identifier. You need to have a (much) better strategy for the code to identify the Type selected by user.

Common approach is to use the id attribute:

Wireframe

When the form is submitted, you then need to retireve an instance of Type based on its id name on your controller