我陷入一种情况，我必须检查一个条件，如果这是真的，那么当用户点击相关按钮时我需要弹出一条消息。
我将无法粘贴整个XML，因此会粘贴相关的XML文件。
XML -
<var name="arg_lock_visible">
<select><![CDATA[select case when has_action_access('Lock') = 'Y' then 1 else 0 end from dual]]></select>
</var>
<arg name="arg_nb_entities" from="data_space" value="ds_selected_entities" />
<actions_template name="check_action_promote_demote">
<set_data_space name="ds_selected_entities" value="0" />
<for_each ref="dw_promote" from="all">
<if>
<condition>
<expression>
if(:arg_promote=:var_action_promote, if(:promote_check='Y',1,0),
if(:arg_promote=:var_action_lock, if(:lock_check='Y',1,0),
if(:arg_promote=:var_action_demote, if(:demote_check='Y',1,0),
if(:arg_promote=:var_action_unlock, if(:unlock_check='Y',1,0),0))))
</expression>
</condition>
<then>
<set_data_space name="ds_selected_entities">
<expression>:ds_selected_entities + 1</expression>
</set_data_space>
</then>
</if>
</for_each>
<if>
<condition>
<expression>
if (:ds_selected_entities=0, 1, 0)
</expression>
</condition>
<then>
<information_message>:arg_msg_no_action</information_message>
</then>
</if>
</actions_template>
<button label="Lock" icon="lock.png" label_visible="true" button_style="true">
<visible>
<expression>:arg_lock_visible</expression>
</visible>
<set_local_value name="arg_promote" ref="var_action_lock" />
<set_local_value name="arg_msg" value="Please add a comment to explain the lock." />
<set_local_value name="arg_msg_no_action" value="You must select at least one entity to lock." />
<run_actions_template template="check_action_promote_demote" />
<set_local_value name="arg_title">
<expression>'Lock (' + string(:arg_nb_entities) + if (:arg_nb_entities = 1, ' entity)', ' entities)')</expression>
<arg name="arg_nb_entities" from="data_space" value="ds_selected_entities"></arg>
</set_local_value>
<run_actions_template template="action_promote_demote" />
</button>
在这个XML中，我需要在模板中添加相同的条件＆＃34; check_action_promote_demote＆＃34;如
<if>
<condition>
<expression>
if (:ds_selected_entities=0, 1, 0)
</expression>
</condition>
<then>
<information_message>:arg_msg_no_action</information_message>
</then>
</if>
上面的代码负责显示消息
<set_local_value name="arg_msg_no_action" value="You must select at least one entity to lock." />
同样地，我需要在这里添加一个条件或者在模板中说IF ELSE块，我有一个基于传递给它的参数返回0或1的SQL，所以当SQL的输出是＃34时; N＆＃34;那么它应该显示另一条消息＆＃34;请选择有效的实体＆＃34;。
我已将XML更改为以下但不起作用：（
<var name="arg_lock_visible">
<select><![CDATA[select case when has_action_access('Lock') = 'Y' then 1 else 0 end from dual]]></select>
</var>
<var name="arg_promote_visible">
<select><![CDATA[select 0 from dual]]></select>
</var>
<arg name="arg_nb_entities" from="data_space" value="ds_selected_entities" />
<actions_template name="check_action_promote_demote">
<set_data_space name="ds_selected_entities" value="0" />
<for_each ref="dw_promote" from="all">
<if>
<condition>
<expression>
if(:arg_promote=:var_action_promote, if(:promote_check='Y',1,0),
if(:arg_promote=:var_action_lock, if(:lock_check='Y',1,0),
if(:arg_promote=:var_action_demote, if(:demote_check='Y',1,0),
if(:arg_promote=:var_action_unlock, if(:unlock_check='Y',1,0),0))))
</expression>
</condition>
<then>
<set_data_space name="ds_selected_entities">
<expression>:ds_selected_entities + 1</expression>
</set_data_space>
</then>
</if>
</for_each>
<if>
<condition>
<expression>
if (:ds_selected_entities=0, 1, 0)
</expression>
</condition>
<then>
<information_message>:arg_msg_no_action</information_message>
</then>
</if>
<if>
<condition>
<expression>
if (:ds_selected_entities=0, 1, 0)
</expression>
</condition>
<then>
<information_message>:arg_msg_no_action</information_message>
</then>
</if>
<if>
<condition>
<expression>
if (:test_arg=0, 1, 0)
</expression>
</condition>
<then>
<information_message>:arg_msg_no_lock</information_message>
</then>
</if>
</actions_template>
<button label="Lock" icon="lock.png" label_visible="true" button_style="true">
<visible>
<expression>:arg_lock_visible</expression>
</visible>
<set_local_value name="arg_promote" ref="var_action_lock" />
<set_local_value name="arg_msg" value="Please add a comment to explain the lock." />
<set_local_value name="arg_msg_no_action" value="You must select at least one entity to lock." />
<set_local_value name="arg_msg_no_lock" value="All entities are not at level 3." />
<run_actions_template template="check_action_promote_demote" />
<set_local_value name="arg_title">
<expression>'Lock (' + string(:arg_nb_entities) + if(:arg_nb_entities = 1, ' entity)', ' entities)')</expression>
<arg name="arg_nb_entities" from="data_space" value="ds_selected_entities"></arg>
</set_local_value>
<run_actions_template template="action_promote_demote" />
</button>
我对XML并不熟悉，因此无法确定应该在哪里进行更改以满足要求。 如果需要，请询问更多信息。
任何帮助都会很明显！