Thymeleaf th unless - html

Question

in my html i wanna use "th:unless". i wanna compare two coming variable,if any one match with other, i want to hide the button in that raw.
here is my code..
Art-in-Nisantasi-Id
Art-in-Nisantasi-Text
Art-in-Nisantasi-Url
Art-in-Nisantasi-Coordinate
<h3>All Contents</h3>
<table border="1">
<tr align="left">
<th style="width: 20px;">Art-in-Nisantasi-Id</th>
<th style="width: 100px;">Art-in-Nisantasi-Text</th>
<th style="width: 50px;">Art-in-Nisantasi-Url</th>
<th style="width: 50px;">Art-in-Nisantasi-Coordinate</th>
</tr>
<tr th:each="contentType:${contentTypes}">
<td th:text="${contentType.art_in_nisantasi_id}"></td>
<td th:text="${contentType.art_in_nisantasi_text}"></td>
<td th:text="${contentType.art_in_nisantasi_url}"></td>
<td th:text="${contentType.art_in_nisantasi_coordinate}"></td>
</tr>
<div>
<td
th:unless="${contentType.art_in_nisantasi_id}+'='+${selectedContent.art_in_nisantasi_id}"></td>
<td th:attr="data-id=${contentType.art_in_nisantasi_id}">
<button type="button" class="action-addButton" onclick="show">Ekle</button>
</td>
</div>
</table>

Answer 1

try this way :
<td th:unless="${contentType.art_in_nisantasi_id == selectedContent.art_in_nisantasi_id}"></td>
this td element will be produced or created in dom when both are not equal