问题描述
<a4j:commandLink onclick="return call();" action="#{bean.deleteUser(all_user.userID)}" reRender="viewUserGrid">
<h:graphicImage style="border-style:none;" url="/images/delete.jpg" height="10px" />
</a4j:commandLink>
问题是后备bean中没有调用deleteUser方法,为什么会这样.但是它正在调用javascript函数,请帮帮我.
The problem is deleteUser method is not getting invoked in the backing bean why is it so.But it is invoking the javascript function Please help me.
推荐答案
问题是您要在"onclick"方法中返回一个值.假设您的call
js方法返回true或false,则必须将代码更改为:
The problem is that you're returning a value in your "onclick" method. Assumming that your call
js method returns a true or false, the code must be changed to:
<a4j:commandLink onclick="if (!call()) return false;"
action="#{bean.deleteUser(all_user.userID)}"
reRender="viewUserGrid" limitToList="true">
<h:graphicImage style="border-style:none;" url="/images/delete.jpg" height="10px" />
</a4j:commandLink>
进一步的解释:
为您的实际代码生成的HTML代码如下所示(或类似的内容):
The HTML generated code for your actual code will look like this (or something familiar):
<a href="#" id="formName:j_id45351"
name="formName:j_id22"
onclick="return call(); A4J.AJAX.Submit('formName',event, '');">
<!-- the rest of the HTML generated code... -->
如果看到的话,return call();
方法位于onclick
的开头,因此不会调用ajax提交.根据我提供的更新代码,代码将类似于以下内容:
If you see, the return call();
method is at the beginning of the onclick
, so the ajax submit won't be called. By the code updated I provide, the code will be similar to this:
<a href="#" id="formName:j_id45351"
name="formName:j_id22"
onclick="if (!call()) return false; A4J.AJAX.Submit('formName',event, '');">
<!-- the rest of the HTML generated code... -->
进行此更改后,如果您的call
js方法返回false,则不会提交ajax调用,如果返回true,则将进行您的ajax调用.请注意,如果javascript方法不返回任何值,则默认情况下将返回false.
With this change, if your call
js method returns false, then the ajax call won't be submitted, if it returns true, then your ajax call will be made. As a note, if a javascript method doesn't return any value, it will return false by default.
更新:建议的代码将与RichFaces 3.x一起使用.如果您使用RichFaces 4.x,您的commandLink应该看起来像
UPDATE: The proposed code will work with RichFaces 3.x. In case you use RichFaces 4.x Your commandLink should look like
<a4j:commandLink onclick="if (!call()) return false;"
action="#{bean.deleteUser(all_user.userID)}"
render="viewUserGrid">
<h:graphicImage style="border-style:none;" url="/images/delete.jpg"
height="10px" />
</a4j:commandLink>
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