Comparing the enum constants in thymeleaf

Question

I have an enum, Constants:

enum Constants {
    ONE,TWO,THREE;
}

How can I compare the enum Constants in Thymeleaf.

Thank

Answer 1

th:if="${#strings.toString(someObject.constantEnumString) == 'ONE'}">

Answer 2

Try this :

th:if="${ day.toString() == 'MONDAY'}"

Answer 3

One more way:

th:if="${constant.name() == 'ONE'}"

It's shorter but makes compare with string representation, can cause problem while refactoring.

Answer 4

Example #1:

enum Constants {
    ONE,
    TWO,
    THREE;
}

Solution:

th:if="${string == T(com.example.Constants).ONE}"
 
   OR

th:if="${string == T(com.example.Constants).ONE.toString()}"

NB: You can use .toString() for safety.

---

Example #2:

enum Constants {
    ONE("One"),
    TWO("Two"),
    THREE("Three");
}

Solution:

th:if="${string == T(com.example.Constants).ONE.toString()}"

NB: When your enum has Description, You have to use .toString().

---

Example #3:

enum Constants {
    ONE("One"),
    TWO("Two"),
    THREE("Three");
}

Solution:

th:if="${'One' == T(com.example.Constants).ONE.getName()}"

NB: Enum description call by .getName().