直接在视图里，继承过来改写一下就好了，这里是form视图，隐藏了创建，编辑的按钮。
<record model="ir.ui.view" id="view_material_groups_section">
<field name="name">根据用户组隐藏按钮</field>
<field name="model">warehouse.material</field>
<field name="inherit_id" ref="warehouse.warehouse_material_form"/>
<field name="groups_id" eval="[(4,ref('warehouse.user_group'))]"/>
<field name="arch" type="xml">
<xpath expr="/form" position="attributes">
<attribute name="create">false</attribute>
<attribute name="edit">false</attribute>
</xpath>
</field>
</record>