<input type="checkbox" class="form-check-label" th:field="*{map[__${key}__]}" />
<label class="form-check-label" th:for="|map${key}1|" th:text='|Option "${key}" From The Map|'>Option "KEY" From The Map</label>
</div>
+ <div class="input-group">
+ <span class="input-group-prepend"><span class="input-group-text">New Option</span></span>
+ <input type="input" class="form-control" name="name" />
+ <span class="input-group-append"><button type="submit" class="btn btn-primary" name="add">Add</button></span>
+ </div>
</div>
</div>
<div class="card-footer">