请教，新API，onchange中判断输入有误，如何提示红色对话框？或弹出错误窗口？

[lipeng260]

尝试这样的代码无效，请教。

@api.onchange(&#039;available_num&#039;) # if these fields are changed, call method<br />&nbsp; &nbsp; def check_change(self):<br />&nbsp; &nbsp; &nbsp; &nbsp; if self.available_num &gt; self.num:<br />&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; context={}<br />&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; context[&quot;key&quot;]=&quot;value&quot;<br />&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; ret = {<br />&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &#039;type&#039;: &#039;ir.actions.client&#039;,<br />&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &#039;tag&#039;: &#039;bs.error_message&#039;,<br />&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &#039;context&#039;: context,<br />&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; }<br />&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; return ret

[mrshelly]

<br />&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; warning = {<br />&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &#039;title&#039;: _(&#039;Warning!&#039;),<br />&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &#039;message&#039;: _(&#039;You must first select a partner!&#039;),<br />&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; }<br />&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; return {&#039;warning&#039;: warning}<br />

[lipeng260]

[quote author=mrshelly link=topic=17351.msg31220#msg31220 date=1445908853]

<br />&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; warning = {<br />&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &#039;title&#039;: _(&#039;Warning!&#039;),<br />&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &#039;message&#039;: _(&#039;You must first select a partner!&#039;),<br />&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; }<br />&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; return {&#039;warning&#039;: warning}<br />

[/quote]

提示出字段无效的那种如何实现？

[mrshelly]

其他原因...

[lipeng260]

我跟踪js代码，找到 instance.web.View类中有this.do_warn(_t("The following fields are invalid:"), warnings.join(''));这个方法，请教在python服务器端如何调用？
是否应该在js中获取onchange方法，在js中判断后直接返回do_warn?