Tree视图中添加按钮，通常使用<button>标签

 

只能有一列来显示这些按钮

代码示例：

<tree>
   <field name="name" />
   <button name="test001" class="text-warning" type="object" string="Reschedule"
                        icon="fa-telegram" />
   <button name="test001" class="text-warning" type="object" string="Reschedule"
                        icon="fa-address-card" />
   <button name="test001" class="text-warning" type="object" string="Reschedule"
                        icon="fa-imdb" />
</tree>