spring 对于 Thymeleaf 中的每个运算符
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For each operator in Thymeleaf
提问by Andremoniy
I can not find syntax for building simple for-each-loop in Thymeleaftemplate.
I'm not satisfied with just th:each=""attribute, because it copies tag in which it's located.
我找不到在Thymeleaf模板中构建简单 for-each-loop 的语法。我对仅th:each=""属性不满意，因为它复制了它所在的标签。
What I'm looking for is something like:
我正在寻找的是这样的：
<th:foreach th:each="...">
...block to be repeated...
</th>
what is analogue of <c:forEach items="..." var="...">or <t:loop source="..." value="...">in Tapestry. Is anything similar for that?
什么是<c:forEach items="..." var="...">或<t:loop source="..." value="...">in 的类似物Tapestry。有什么类似的吗？
回答by ekem chitsiga
Use th:blockas stated in the Thymeleaf guide
th:block按照 Thymeleaf 指南中的说明使用
th:blockis a mere attribute container that allows template developers to specify whichever attributes they want. Thymeleaf will execute these attributes and then simply make the block disappear without a trace.
th:block只是一个属性容器，允许模板开发人员指定他们想要的任何属性。Thymeleaf 将执行这些属性，然后简单地使块消失得无影无踪。
So it could be useful, for example, when creating iterated tables that require more than one <tr>for each element:
因此，例如，在创建<tr>每个元素需要多个的迭代表时，它可能很有用：
<table>
<th:block th:each="user : ${users}">
<tr>
<td th:text="${user.login}">...</td>
<td th:text="${user.name}">...</td>
</tr>
<tr>
<td colspan="2" th:text="${user.address}">...</td>
</tr>
</th:block>
</table>
回答by Raibaz
The th:blocksolution is definitely the best one, but alternatively you can also try using th:remove="tag"in order to remove the containing tag:
该th:block解决方案绝对是最好的解决方案，但您也可以尝试使用th:remove="tag"以删除包含标签：
<table>
<tbody th:each="user : ${users}" th:remove="tag">
<tr>
<td th:text="${user.login}">...</td>
<td th:text="${user.name}">...</td>
</tr>
<tr>
<td colspan="2" th:text="${user.address}">...</td>
</tr>
</tbody>
</table>
The benefit of this approach is that you can also pass a Thymeleaf expression to th:removein order to only remove the tag conditionally, e.g. if you want only some users to be included in a <tbody>, besides having other interesting uses.
这种方法的好处是你还可以传递一个 Thymeleaf 表达式th:remove，以便仅有条件地删除标签，例如，如果你只希望一些用户包含在 a 中<tbody>，除了有其他有趣的用途。
Hereis the documentation for th:remove.
这是th:remove.
