I am trying to implement a dynamic menu with JSF2/RichFaces. The idea is simple, the menu is defined in the database, and depends on the connected user.
The menu is correctly generated, but the action is not working, and I don't understand why.
This is my JSF code:
<c:forEach items="${sessionMenu.menus}" var="menu"><!-- Menus -->
<li>
${menu.label}
<ul class="sub-menu" id="sub-${menu.label}">
<c:forEach items="${menu.submenus}" var="submenu"><!-- Sub menus -->
<li>
<a4j:commandLink value="${submenu.label}" action="${sessionMenu.action}"/>
</li>
</c:forEach>
</ul>
</li>
</c:forEach>
${sessionMenu.action} returns a string which should redirect to another page (defined as a navigation-case in the faces-config file).
I also tried to replace the action with a hard-coded string, and it works, I guess that the problem arrives with the EL which is not correctly interpreted.
If some one can help me to understand what is wrong?
Edit:
Here is an example of the links generated:
<a id="mainForm:j_id_g_0_2_0_2" onclick="RichFaces.ajax("mainForm:j_id_g_0_2_0_2",event,{"incId":"1"} );return false;" name="mainForm:j_id_g_0_2_0_2" href="#">Screen</a>
This one was generated dynamically and it does nothing;
<a id="mainForm:j_id_g_0_2_0_4" onclick="RichFaces.ajax("mainForm:j_id_g_0_2_0_4",event,{"incId":"1"} );return false;" name="mainForm:j_id_g_0_2_0_4" href="#">Screen</a>
And this one used a static string and the redirection is working properly.
These 2 links were generated in the same page and on the same request.
Finally, I got it working, I just changed the action value to the method name as it is defined in my bean, that means:
<a4j:commandLink value="#{submenu.label}" action="#{sessionMenu.getAction()}" />
If some one can explain why, I am curious.
Related
I am having a JSF application which creates and presents about 50 reports. These reports are rendered PNGs and under the pictures a table is displayed.
This table uses a RichFaces 4 togglePanel with switchType="client". The togglePanel is just for collapsing and expanding the table.
<h:form>
<rich:togglePanel id="#{param.reportWrapper}_togglePanel"
stateOrder="opened,closed" activeItem="opened" switchType="client">
<rich:togglePanelItem name="closed">
<h:panelGroup>
<div class="myclass">
<ul class="container-icons">
<li>
<h:commandLink styleClass="container-max" value="maximieren">
<rich:toggleControl targetPanel="#{param.reportWrapper}_togglePanel" targetItem="#next" />
</h:commandLink>
</li>
</ul>
<h3>My Heading</h3>
</div>
</h:panelGroup>
</rich:togglePanelItem>
<rich:togglePanelItem name="opened">
<h:panelGroup>
<div class="myclass">
<ul class="container-icons">
<li>
<h:commandLink styleClass="container-min" value="minimieren">
<rich:toggleControl targetPanel="#{param.reportWrapper}_togglePanel" targetItem="#prev" />
</h:commandLink>
</li>
</ul>
<h3>Another Heading</h3>
<div class="scrolling-table-content">
<rich:dataTable>
// ...
</rich:dataTable>
</div>
</div>
</h:panelGroup>
</rich:togglePanelItem>
</rich:togglePanel>
</h:form>
The problem is, that I sometimes get a ViewExpiredExceptions when the reports are loaded. My numberOfLogicalViews and numberOfViewsInSession is 14. I dont want to set it to 50, because of memory issues and because it should not be necessary as only one report is really shown at the same time.
I tried to remove the h:form tags, which are seen as logicalView. In my opinion the togglePanel is not the item, which needs the form because it's switch type is client (not server and ajax, which need form tags). But the command link does need the form tag, because if I remove it, an error occurs saying "this link is disabled as it is not nested within a jsf form".
So I tried to replace the commandLink with a commandButton. This worked fine first and the form wasnt necessary anymore. But somehow the behaviour is completely random now. Sometimes the tables can be expanded, sometimes nothing happens when i click the expand button. When i add form tags again, it works fine, but doesnt solve my ViewExpiredException.
Hope, somebody can help me out here...
Thanks for your help!
Buntspecht
If you only need to switch the panel you can use <a4j:commandLink> that lets you limit the execution scope (so it won't submit the whole form). Or you can remove the command components altogether and just use JavaScript API of the togglePanel:
<a onclick="#{rich:component('panelId')}.switchToItem(#{rich:component('panelId')}.nextItem())">Next</a>
Thank you very much for your help Makhiel. I finally managed to solve the problem with the commandButtons solution. I can't explain why, but the IDs of my togglePanelItems got duplicated in the different reports.
Giving every togglePanelItem a unique ID like
<rich:togglePanelItem name="closed" id="#{param.reportWrapper}_opened">
and
<rich:togglePanelItem name="opened" id="#{param.reportWrapper}_closed">
solved the problem...
So now we got rid of all the h:form tags and thus have about 50 logical views less! :)
TL;DR
Is there something like composite's cc.clientId that will give me the id of a custom tag?
Details:
I'd like a custom tag that will render a label, a value, and an icon. When the icon is clicked, a Bootstrap modal is supposed to open up that will edit the value.
<ui:composition>
<div> #{field.label}: #{field.value}
<a class="icon-pencil" data-target="#editForm" data-toggle="modal">
</div>
<h:form id="editForm" class="modal hide fade" role="dialog" ...>
... there's an input here linked to field.value ...
</h:form>
</ui:composition>
I can use the tag with <my:editor />. When I do so within a ui:repeat, an id is prepended to the editForm so that it renders with id j_idt104:editForm. So I need to modify the data-target to include the id.
This would be really easy with a composite component because I have access to the id via cc.clientId:
data-target="\##{cc.clientId}\:editForm"
However, I can't get it to work with a custom tag because I don't know of an EL expression (or something) that will give me access to the id. I could probably wait until after the page is loaded, then use jQuery to inspect the id and set the data-target after the fact, but I was hoping for a more pure-JSF solution.
I'm using JSF 2.1 and Bootstrap 2.3, at the moment.
Answer seems to be no. BalusC says you should replace things like custom tags with "normal" JSF components. In this case, that would mean using the composite component.
If you're deadset on using custom tag, I worked around the issue (with lots of help from the answer here) by using an index in the form's id:
I replaced the ui:repeat with a c:forEach that has access to the item's index:
<table>
<c:forEach items="#{bean.items}" var="item" varStatus="status">
<my:editor index="#{status.index}" ... />
</c:forEach>
</table>
And in the custom tag, I used the index in the data-target:
<tr>
<td>#{label}: #{value}</td>
<td>
<a data-target="\#editForm-#{index}" ... ></a>
<h:form id="editForm-#{index}" ... >
...
</h:form>
</td>
</tr>
The only catch is that c:forEach is a build-time construct (see details in this answer), which is a problem if you need any render-time data (like if you build information up in preRenderView). If you do, then you're better off using ui:repeat with a custom component, and relying on the cc.clientId.
I’m new in JavaServer Faces.
I have a simply form:
<div id="respond" class="comment-respond">
<h3 id="reply-title" class="comment-reply-title">#{msgs.leavereply}</h3>
<h1>#{!forumsBean.activeWithProject}</h1>
<h:form>
<h:inputTextarea value="#{forumpostsBean.text}" style="resize:none"/>
<h:commandButton value="#{msgs.add}" action="#{forumpostsBean.addForumpost}"/>
</h:form>
</div>
By clicking command button all it’s fine, executes method forumpostsBean.addForumpost.
But when I modify code to this:
<div id="respond" class="comment-respond">
<h3 id="reply-title" class="comment-reply-title">#{msgs.leavereply}</h3>
<h1>#{!forumsBean.activeWithProject}</h1>
<h:form>
<h:inputTextarea value="#{forumpostsBean.text}" style="resize:none" disabled="#{not forumsBean.active}"/>
<h:commandButton value="#{msgs.add}" action="#{forumpostsBean.addForumpost}" disabled="#{not forumsBean.active}"/>
</h:form>
</div>
When items not disabled, current page only have refreshed, but method forumpostsBean.addForumpost don’t executes.
In both variants, <h1>#{!forumsBean.activeWithProject}</h1> shows correct value.
You have 2 beans? one called forumpostsBean and another just forumsBean? I can't see if you've got them both but maybe its the main error? as the comment above says, maybe your logic is out of place.
You may want to use rendered="" on the button rather that just disabling it so its not part of the dom at all upon page load and then use an ajax call when you type data in your input field to do partial ajax render the div again and show it. good for testing.
Simple question (using JSF 2.0 and primefaces 2.2.1):
I need to create a button or link that will take me to an external url (i.e. www.facebook.com) and I need that button to look like the facebook icon instead of having the literal word. How can I do this? Thank you.
You basically want to end up with the following in the JSF-generated HTML code:
<a><img /></a>
There are several ways how to achieve this in JSF.
Just do it:
<a href="http://www.facebook.com">
<img src="#{request.contextPath}/resources/images/facebook.png" />
</a>
Use <h:graphicImage>:
<a href="http://www.facebook.com">
<h:graphicImage name="images/facebook.png" />
</a>
Eventually, with <h:outputLink>:
<h:outputLink value="http://www.facebook.com">
<h:graphicImage name="images/facebook.png" />
</h:outputLink>
What way to choose depends on whether you really need it to be a JSF component. E.g. in order to be able to grab/manupulate it in backing bean, and/or to re-render by ajax, etc.
I want to use a tag in my JSF page, but i also want to have dynamic href content. I know there is a h:commandLink in JSF but i don`t want use it for my purposes. I have t:dataTable elemet which iterates via results and shows them on my page. Here is the situation:
<t:dataList id="dataTable" value="#{manBean.fullResult}" var="element" first="0" rows="10">
<div class="photos">
<img src="myimages/IN THIS TOO.../image.jpg"
</div>
...
</t:dataList>
I have tried code like this:
<img src="myimages/#element[0]/image.jpg"
. #element[0] is an element of result list from dataTable and contains values like: 0,1,2,3... etc.
this ends witch error that i could not use #{...} in a template. What should i do? Anybody knows a good solution for this?
If you're using JSF on JSP, use <h:outputLink> and <h:graphicImage> instead of <a> and <img>.
<h:outputLink value="myimages/#{element}/image.jpg">
<h:graphicImage value="myimages/#{element}/image.jpg" />
</h:outputLink>
If you're using JSF on Facelets, you can just use EL in template text.
<a href="myimages/#{element}/image.jpg">
<img src="myimages/#{element}/image.jpg" />
</a>