Whether it is possible hide 'checkbox' with use th:unless? - thymeleaf

Question

I have a color filter, simillar to this:
<input type="checkbox" id="orange" class="orange" value="orange"/>orange
<br/>
<input type="checkbox" id="peach" value="peach"/>peach
<br/>
<input type="checkbox" id="terracotta" value="terracotta"/>terracotta
<br/>
<input type="checkbox" id="coffee" value="coffee"/>coffee
<br/>
<input type="checkbox" id="browne" value="browne"/>browne
<br/>
<input type="checkbox" id="rose" value="rose"/>rose
<br/>
<input type="checkbox" id="red" value="red"/>red
<br/>
I recive color from DB.
<div th:each="model : ${allColor}">
<span th:text="${model.color}"/>
Can I hide color, with use Thymeleaf, which is not in DB?
For example now I haven't Rose, Coffee and Peach colors, but maybe in future I will have this color. I want to do colors verification , if color is in DB, user can see on UI checkbox, else checkbox hide. I read about th:if and th:unless. Whether it is possible to make it with use Thymeleaf?
If I try to do:
<input type="checkbox" th:if="${model.color==coffee}"id="coffee" value="coffee"/>coffee
It's not working.

Answer 1

Instead of hiding colors, you should create the color checkboxes with a loop as well. Like this:
<th:block th:each="model : ${allColor}" th:with="color=${model.color}">
<input type="checkbox" th:id="${color}" th:class="${color}" th:value="${color}"/> <span th:text="${color}" />
<br />
</th:block>
As for why your original attempt didn't work, it's hard to tell without seeing more of the html. I'm guessing that ${model.color} was undefined, because you weren't in a loop? Also, you were missing quotes around 'coffee'. like this: `${model.color == 'coffee'
Something like this may work as well, but I would recommend the loop.
<input th:if="${allColor.contains('orange')}" type="checkbox" id="orange" class="orange" value="orange"/>orange<br/>
<input th:if="${allColor.contains('peach')}" type="checkbox" id="peach" value="peach"/>peach<br/>
<input th:if="${allColor.contains('terracotta')}" type="checkbox" id="terracotta" value="terracotta"/>terracotta<br/>
<input th:if="${allColor.contains('coffee')}" type="checkbox" id="coffee" value="coffee"/>coffee<br/>
<input th:if="${allColor.contains('browne')}" type="checkbox" id="browne" value="browne"/>browne<br/>
<input th:if="${allColor.contains('rose')}" type="checkbox" id="rose" value="rose"/>rose<br/>
<input th:if="${allColor.contains('red')}" type="checkbox" id="red" value="red"/>red<br/>}`.