I'm new to JSF, I'm trying to understand what is the standard way for pages to send parameters between each other.
I have one page with some form elements:
form.xhtml:
<h:form>
<p:selectManyButton name="numbers" id="lstNumbers" >
<f:selectItem itemValue="1" itemLabel="1"></f:selectItem>
<f:selectItem itemValue="2" itemLabel="2"></f:selectItem>
<f:selectItem itemValue="3" itemLabel="3"></f:selectItem>
</p:selectManyButton>
<br /><br />
<p:selectManyButton name="letters" id="lstLetters" >
<f:selectItem itemValue="A" itemLabel="A"></f:selectItem>
<f:selectItem itemValue="B" itemLabel="B"></f:selectItem>
<f:selectItem itemValue="C" itemLabel="C"></f:selectItem>
</p:selectManyButton>
<p:commandButton value="Go" action="results">
</p:commandButton>
And my results page where I want to get what items were selected from the form.
results.xhtml:
<h:body>
<br /><br /> param.numbers: "#{ param.numbers }"
<br /><br /> param.letters: "#{ param.letters }"
</h:body>
What am I missing that I cannot get form.xhtml to send the selected items to results.xhtml as parameters (either GET or POST)?
I can get this to work with a flowscoped bean, but that seems overkill for a simple task. Somehow I think I've got the wrong approach to this altogether. Thanks in advance.
Related
I have a select and I want that when the user doesn't select anything it prints an error. So I use validator and my xhtml code is:
<p:selectOneMenu id="students"
value="#{studentsBean.selectedStudent}"
converter="studentsConverter" effect="fold">
<f:selectItem itemLabel="Select..." itemValue="" />
<f:selectItems value="#{studentsBean.studentsList}"
var="student" itemValue="#{student}"
itemLabel="#{student.name}" />
<p:ajax event="change" update="students" process="#this" />
<f:validator validatorId="studentNotNull" />
<f:ajax execute="#this" render="studentPanel"/>
</p:selectOneMenu>
<h:panelGroup id="studentPane">
<h:message for="students" style="color:red" />
</h:panelGroup>
The problem is that if I don't select anythin it print me "The students is not selected" while I choice an student the label it doesn't disappear.
the validatior works and I don't think I must write the code.
Anyone can help?
Can you try this
<p:selectOneMenu id="students"
value="#{studentsBean.selectedStudent}"
converter="studentsConverter" effect="fold"
required="true" requiredMessage="Student is required">
<f:selectItem itemLabel="Select..." noSelectionOption="true"/>
<f:selectItems value="#{studentsBean.studentsList}"
var="student"
itemValue="#{student}"
itemLabel="#{student.name}" />
</p:selectOneMenu>
Add in your form
<p:growl id="msgs" showDetail="true" life="3000"/>
and of course, update msgs in form submit
I'm having a trouble with getting rid of required message.
I have a form in which I have a few fields and a button.
When I press a button there is validation that checks if required fields where filled with values if not then required message is displayed for invalid value/component.
Now I want to select a value from selectOneMenu or type something into inputText and when I do that I want the required message to dissapear without need to press the button again.
How would you do that?
I've tried to remove message with sth like this, but it doesn't seems to work:
Iterator<FacesMessage> msgIterator = FacesContext.getCurrentInstance().getMessages();
while (msgIterator.hasNext())
{
FacesMessage facesMessage = msgIterator.next();
msgIterator.remove();
}
Could you help me with that?
Here is example code:
<h:form id="mainForm">
<h:selectOneMenu required="true" id="dictionaryValueId" value="#{SomeBean.dictionarySelectedValue}">
<f:selectItem itemValue="#{null}" itemLabel="#{i18n['view.choose']}" />
<f:selectItems value="#{SomeBeanBean.dictionaryValuesMap}" var="element"
itemLabel="#{element.descripption}" itemValue="#{element.key}" />
<f:ajax event="change" execute="#this msgId" render="msgId dictionaryValueId"/>
</h:selectOneMenu>
<h:message id="msgId" style="display:none;" for="dictionaryValueId" />
...
<h:commandButton value="#{i18n['button.forward.name']}"
actionListener="#{SomeBean.forward}" >
<p:ajax process="#form" update="mainForm"/>
</h:commandButton>
I am not sure, but is not there a problem with
style="display:none;"
for
<h:message id="msgId"/>
You can wrap your message with <h:panelGroup/> and render by this panelGroup Id, this Id will be always present on your form.
<h:form id="mainForm">
<h:selectOneMenu required="true" id="dictionaryValueId" value="#{SomeBean.dictionarySelectedValue}">
<f:selectItem itemValue="#{null}" itemLabel="#{i18n['view.choose']}" />
<f:selectItems value="#{SomeBeanBean.dictionaryValuesMap}" var="element" itemLabel="#{element.descripption}" itemValue="#{element.key}" />
<f:ajax event="change" execute="#this" render="messageBundle1 dictionaryValueId"/>
</h:selectOneMenu>
<h:panelGroup id="messageBundle1">
<h:message id="msgId" style="display:none;" for="dictionaryValueId" />
</h:panelGroup>
<h:commandButton value="#{i18n['button.forward.name']}"
actionListener="#{SomeBean.forward}" >
<p:ajax process="#form" update="mainForm"/>
</h:commandButton>
</h:form>
when i click on the command button. validate method is getting called but the error message is not getting displayed..
here is my code..
<h:form id="form">
<h:body>
<p:panel style="width:500px">
<h:outputLabel for="year" value="Select Year: *" style="font-weight:bold" />
<p:selectOneMenu id="year" value="#{leaveBean.year}">
<f:selectItem itemLabel="Select One" itemValue="null" />
<f:selectItems value="#{leaveBean.yearDTO}" var="currentUser" itemValue="#{currentUser.name}" itemLabel="#{currentUser.name}" />
<f:validator validatorId="LeaveCardValidator" />
</p:selectOneMenu>
</p:panel>
<p:commandButton value="Submit" action="#{leaveController.leaveCard}" update="updateList,updateDetails" id="button"/>
<h:message for="year" style="color:red"/>
You seem to expect that JSF auto-updates the <h:message> on every ajax request. This is untrue. Perhaps you're confusing with PrimeFaces <p:messages> or <p:growl> which have each an autoUpdate attribute which enables you to tell them to auto-update themselves on every ajax request.
You really need to make sure that the <h:message> is covered by the ajax update. Just give it an ID
<h:message id="yearMessage" ... />
and include it in the client ID collection of the ajax update
<p:commandButton ... update="updateList updateDetails yearMessage" />
An alternative would be to replace <h:message> by <p:messages autoUpdate="true">.
Not sure where are the updateList and updateDetails are located but in the example give above you should use update="#form" instead or in addtion like this:
update="updateList updateDetails #form"
so that the form will be rendered again...
just use one of these :
update the whole form in order to update the content of
<h:message />
<p:commandButton value="Submit" action="#{leaveController.leaveCard}" update="#form" id="button"/>
or give the <h:message /> an id and id this id to the <p:commandButton/>
<h:message id="msg" for="year" style="color:red"/>
<p:commandButton value="Submit" action="#{leaveController.leaveCard}" update="updateList,updateDetails,msg" id="button"/>
In my scenario i need to change attribute display type from managed bean using ajax
<h:inputText id="text1" value="#{managedBean.value}" />
<h:selectOneRadio value="#{managedBean.option}">
<f:selectItem itemValue="Yes" itemLabel="Yes" />
<f:selectItem itemValue="No" itemLabel="No" />
<f:ajax listener="#{managedBean.changeAttrDisplayType}" event="click" render="text1"/>
</h:selectOneRadio>
If i click yes in the radio button,then attribute(id=text1) will render as textbox and if i click No then attribute (id=text1) will be render as label.
Is it possible ?Please Guide me ...
Yes! this is possible! put your h:inputText and h:outputLabel in a h:panelGroup and in the ajax event rerender the h:panelGroup. Put the condition of which one you want to render in the respective rendered attribute like bellow:
<h:panelGroup id="changingPanel">
<h:outputLabel id="id1"
rendered="#{managedBean.option == 'Yes'}"
value="This is label"/>
<h:inputText id="id2" value="#{managedBean.input}"
rendered="#{managedBean.option == 'No'}" />
</h:panelGroup>
<h:selectOneRadio value="#{managedBean.option}">
<f:selectItem itemValue="Yes" itemLabel="Yes" />
<f:selectItem itemValue="No" itemLabel="No" />
<f:ajax event="click" render="changingPanel"/>
</h:selectOneRadio>
Assumed that, you want to display outputLabel when "Yes" is selected and inputText when "No" is selected.
<h:form action="" prependId="false">
<h:selectOneRadio value="#{managedBean.color}" id="color">
<f:selectItem itemValue="red" itemLabel="Color1 - Red" />
<f:selectItem itemValue="green" itemLabel="Color1 - Green" />
<f:ajax event="click" render="group1" listener="#{managedBean.renderSubQuestions}"/>
</h:selectOneRadio>
<h:panelGroup id="group1">
<h:outputLabel value=" Color Description " rendered="#{managedBean.colorRender}"></h:outputLabel>
<h:inputText rendered="#{managedBean.colorRender}"></h:inputText>
<h:selectOneRadio id="number" value="#{managedBean.integer}" rendered="#{managedBean.colorRender}" >
<f:selectItem itemValue="1" itemLabel="Number1 - 1" />
<f:selectItem itemValue="2" itemLabel="Number1 - 2" />
<f:selectItem itemValue="3" itemLabel="Number1 - 3" />
<f:ajax event="click" render="group2 " listener="#{managedBean.renderSubQuestions}"/>
</h:selectOneRadio>
</h:panelGroup>
<h:panelGroup id="group2">
<h:outputLabel value="Number Description " rendered="#{managedBean.integerRender}"></h:outputLabel>
<h:inputText rendered="#{managedBean.integerRender}"></h:inputText>
</h:panelGroup>
</h:form>
In my scenario I used nested JSF AJAX with nested rendered attribute. If I select a color based on the selection, it rendered some radio button (addition elements) with AJAX. It is working fine, but additional elements with AJAX behavior is not working for me. If I remove rendered attribute in number radio button, it is working fine. I dont know where I did mistake.
It is most likely what your ManagedBean is not in ViewScoped or SessionScoped. When you post back to the bean, you are loosing rendered states. I suggest to change for the ViewScoped one.
Not related :
You should remove the action attribute from the h:form since JSF override it.