I have to validate that a field in a form is not empty.
The problem is that the form is in a JQueryUI dialog (since I don't know how to create "windows" in JSF), so when I click the commandButton the page is refreshed and the JQuery dialog is lost. After refreshing, I can see the error message was printed in the page code by looking at the source code. If I use ajax in the commandButton then the page is not refreshed but I don't get the message printed, I got it as a sort of "Javascript alert" in the browser.
How can I get the error message without refreshing the page?
<h:inputText value="#{myController.name}" id="myname" required="true" requiredMessage="Name required">
<f:ajax />
</h:inputText>
<h:message errorClass="..." for="myname" />
Note: This looked similar to my problem but I don't think the solution is what I'm looking for.
Note: I am not using additional libraries like Primefaces, etc
With the hint of the comment, I was able to solve it this way:
In the commandButton, use ajax with both render and execute (render only doesn't work):
<h:commandButton id="...." action="#{myController.doSomething()}" type="submit" value="Do something">
<f:ajax execute="#form" render="#form" />
</h:commandButton>
Create a "pageUpdate()" method in myController that is called at the end of myController.doSomething(). This way, after the actions, the page is refreshed and the dialog is gone. There are of course other ways to close the dialog, but it is convenient for me to update the page when there is no error in the dialog action, so my objects in memory are updated too.
I think JQuery dialog messes with my styles after the ajax call returns with error, so check that out if you do it.
Related
I have a dropdown and checkbox in my page and if we select a dropdown then the checkbox has to be disabled. We should not use JavaScript for this. I am new to JSF. Is there a way by using JSF. Any ideas.
Just add a <f:ajax> which executes on change of the dropdown and updates the checkbox whereby its disabled attribute checks if the dropdown's value is not empty.
E.g.:
<h:selectOneMenu value="#{bean.selectedItem}">
<f:selectItems value="#{bean.availableItems}" />
<f:ajax render="checkbox" />
</h:selectOneMenu>
<h:selectBooleanCheckbox id="checkbox" disabled="#{not empty bean.selectedItem}" />
That's basically all.
Please note that this uses under the covers still JavaScript for the job! The only difference is that you don't need to manually write any line of JavaScript code, instead JSF autogenerates the necessary JS code for you.
I have a form that is defined in a separate jsf page. This is is included to the main page when i click a link. Now the form is being displayed correctly. But the problem is that the submit button is not calling the action function defined.
The code to include the page( As suggested in this question: JSF2 Dynamically loading pages by ajax
<h:panelGroup id="editdivparent" layout="block">
<h:panelGroup id="editdiv" rendered="#{formsBean.edituserdiv}" layout="block">
<h:form id="userform" class="form-horizontal">
<ui:include src="edituserdetails.xhtml">
</ui:include>
</h:form>
</h:panelGroup>
</h:panelGroup>
The included page contains just the form elements with submit button:
<h:commandButton action="#{userBean.register() }" value="Update">
</h:commandButton>
I am getting no errors. On submitting the form the current page is redisplayed. I have put some print statements in the action function. Also there is a query error is put. None of them are being generated.
Am i doing something wrong here?
The commandButton action property already expects a method expression, so just take the parenthesis out, like this:
<h:commandButton action="#{userBean.register}" value="Update" />
Also, make sure you don't have nested forms when making templates with includes.
I hope it helps.
In our application we are displaying the menus dynamically. We have the menu object(menuitems in below code) populated with all the menu items (read from an xml). The home page then generates the menus by usinng ui:repeat. Insdie ui:repeat there are p:commandlink.
Below is the code
<h:form id="mainMenu">
<h:panelGroup id="MMPanel" layout="block" styleClass="left_menu">
<ui:repeat var="node" value="#{menuitems.level1menus}">
<p:commandLink immediate="true" styleClass="menu"
action="#{menuitems.onLevel1MenuChange(node.id)}"
update=":pageTitle :menuLevel2 :menuLevel3" title="#{node.name}"
rendered="#{menuitems.selectedLevel1.id!=node.id}" onclick="menuSelect(this)">
<span class="icon icon_#{node.name}"></span>
<span class="text">#{node.name}</span>
</p:commandLink>
<p:commandLink immediate="true" styleClass="menu activelink"
action="#{menuitems.onLevel1MenuChange(node.id)}"
update=":pageTitle :menuLevel2 :menuLevel3" title="#{node.name}"
rendered="#{menuitems.selectedLevel1.id==node.id}" onclick="menuSelect(this)">
<span class="icon icon_#{node.name}"></span>
<span class="text">#{node.name}</span>
</p:commandLink>
</ui:repeat>
</h:panelGroup>
</h:form>
The menuitems bean is at Session level.
There are two diffeent p:commandlink inside ui:repeat. The only difference between the 2 is in the styleclass and rendered attribute. This is done to identify the default menu item when the user logs for the first time and give it an extra css of "activeLink".
The java script called on onclick is given below (in case it is required)
function menuSelect(selectOne){
$(".left_menu>a").removeClass("activelink");
$(selectOne).addClass("activelink");
removeAllChannels();
}
function removeAllChannels(){
$.atmosphere.unsubscribe();
}
The removeAllChannels is to remove primepush autorefresh channels we have.
The issue i am facing is this.
All the links are getting rendered correctly and in Firebug i see all of them have the same html.
But the one which is generated with the extra css "activeLink" (through rendered condition -- menuitems.selectedLevel1.id==node.id) is not working. Nothing happens when i click this default link. All other links work fine.
So when i click on a different link, it takes me to the required page. But when i click back on the menu which was default, nothing happens
I added a Custom phase listener and saw that all the lifecyle stages are called when this link is clicked but the action method is not.
I went through the links this and this but could not figure out the issue.
Please help.
Do tell me if something is not clear
As part of safeguard against tampered/hacked requests, the JSF component's rendered attribute is re-evaluated during processing the form submit. In case of a command link/button, if it evaluates false, then its action won't be queued/invoked. This matches the symptoms you're seeing.
This can in turn happen if the managed bean #{menuitems} is request scoped and/or when the properties behind #{menuitems.level1menus} or #{menuitems.selectedLevel1} are incompatibly changed during the postback request.
Putting the bean in the view scope and ensuring that the getters do not do any business job should fix this problem.
See also:
How to choose the right bean scope?
commandButton/commandLink/ajax action/listener method not invoked or input value not updated - point 5 applies to you
I am using JSF and Primefaces in my web application.
In this i am using one form which includes some some details to be filled by student.
So there is some validation on that fields
And, On this page there are two button one is Submit and Other is Logout
When I pressed submit button form is displaying validation error if details are not completed.
But Same things also shown while pressing LOGOUT link also
Logout is p:commadLink
<p:commandLink styleClass="logout" type="submit" action="#{userManagedBean.logout}">
<p:graphicImage value="/images/logout.png"></p:graphicImage>
</p:commandLink>
Submit is h:commandButton
<h:commandButton image="/images/submit_button.png" type="submit" action="#{referManagedBean.saveDetails}" value="submit"></h:commandButton>
I need Logout link skip this validation step and directly goes to managed bean called function.
How can i skip Validation Step ??
Since the log-out action seems that has nothing to do with the details form (being validated), you could just move the button to different form (h:form) so it wouldn't trigger the details form validation anyway.
I solved my problem i used immediate="true" by which it skips the validation phase.
<p:commandLink styleClass="logout" type="submit" immediate="true" action="#{userManagedBean.logout}">
<p:graphicImage value="/images/logout.png"></p:graphicImage>
</p:commandLink>
I have a main jsf page, it contains a link to a popup window.
I want to update a component of the main jsf page. when i close the popup window.
popup.xhtml:
<h:commandButton value="close" onclick="return window.close();"
action="showDevoir.xhtml">
<f:ajax execute="#form" render=":devoirForm" />
</h:commandButton>
main.xhtml
<form id="devoirForm" >
<p:panel id="devoir" />
</form>
When i close the popup, i want to update the panel component of the form with id="devoirForm"
I see that you're using PrimeFaces.
Just use <p:dialog> instead of window.open(). See also the showcase. This creates a <div> element in the very same window, so you would just have instant access to the main form from there.
Add to your main page a JavaScript function that updates said component. Call it from the onunload event from your popup windows.
I am less familiar with the issue of rerendering a component JavaScript; in the worst of the worlds you can add a commandButton that refreshes the component, make it invisible through CSS, and make the JS launch its click event (like in this example)