My commandlink is calling to action only in the second click. I added a debug point and tried. first click it doesn't come to method. Only second click it hit the action.
I tried by adding the script as mentioned in here but it didn't help. Any other solution to resolve this? instead h:commandlink ?
<h:form>
<h:panelGroup id="new-line-panel">
some code goes here....
<h:panelGroup id="numberSelectionPanel">
<ui:repeat var="newLineItem" value="#{SelectionBean.Cards}" >
<span class="new-line-item">
<h:commandLink id="no-#{newLineItem.serNo}"
styleClass="#{SelectionBean.serNo == newLineItem.serNo ? 'selected' : ''} btn"
action="#{SelectionBean.populateSelectedNum(newLineItem.serNo)}">
<f:ajax render=":form:numberSelectionPanel" execute="#form"/>
#{newLineItem.serNo}
</h:commandLink>
</span>
</ui:repeat>
</h:panelGroup>
some more code
</h:panelgroup>
</h:form>
in the SelectionBean method
public void populateSelectedNumber(String number) {
this.serNo = number; // I added debug point here
selectedMnpMessage = null;
}
Related
I am using Java EJB with JSF.
What I doing is just a simple search result from database and display it on a table using JSF with ajax. But why when first submitting, the result is not appear. And second time only the result will appear.
Below is my JSF page code
<h:form id="wholeForm">
<p:panelGrid id="resultTable" styleClass="result_table1" >
<p:row>
<p:column>
<div align="center" id="font-size1">
<h:selectOneRadio value="#{scanResult.typeOfScan}">
<f:selectItem itemValue="Carrier" itemLabel="Carrier"></f:selectItem>
<f:selectItem itemValue="Slot" itemLabel="Slot"></f:selectItem>
<f:selectItem itemValue="HD" itemLabel="HD"></f:selectItem>
<p:ajax event="change"></p:ajax>
</h:selectOneRadio>
Scan: <p:inputText styleClass="searchField" id="counter" value="#{scanResult.serialNumber}" a:autofocus="true">
<p:ajax event="keydown" update="wholeForm" onstart="if (event.keyCode != 13) { return false;}" listener="#{scanResult.checkResult()}" />
</p:inputText>
<br/><br/>
</div>
</p:column>
</p:row>
</p:panelGrid>
<p:panelGrid id="resultTable1" styleClass="result_table1" rendered="#{not empty scanResult.scanResultCarrier}" >
<c:forEach items="#{scanResult.scanResultCarrier}" var="result" >
<!-- ..do something and call out result -->
</p:column>
</p:row>
</c:forEach>
</p:panelGrid>
</h:form>
And my managed bean is as below
#Named(value = "scanResult")
#SessionScoped
public class scanResult implements Serializable {
//Some code here
public void checkResult() {
scanResultCarrier = new ArrayList<>();
scanResultSlot = new ArrayList<>();
System.out.println("checking");
if (typeOfScan.equals("Carrier")) {
System.out.println("Serial " + serialNumber);
scanResultCarrier = scanresultcarrierFacade.searchResultCarrier(serialNumber);
System.out.println(scanResultCarrier.size());
} else if (typeOfScan.equals("Slot")) {
scanResultSlot = scanresultslotFacade.searchResultSlot(serialNumber);
} else if (typeOfScan.equals("HD")) {
} else {
}
serialNumber = "";
}
}
I use System.out.println(lsitofresult.size()); to print out my result and the result is not blank. Mean that I successful retrieve my result from database.
But my result table not able to show out after I click on enter.
Then I notice that my url is as below
http://localhost:8080/outgoingScanSystem-war/faces/index.xhtml;jsessionid=8b6cefa932ff60984607ee38ec13
And after I refresh my page, the result will appear again.
And my url change to :
http://localhost:8080/outgoingScanSystem-war/faces/index.xhtml
May I know why? Is it related to URL? I have no idea where should I start my troubleshoot. Anyone can give me some guideline?
I see some problems here. First of all, you're using the session scope while your managed bean should be view scoped (there's no reason to use the session here, see the link below). That's the cause why your results are getting displayed when you refresh the page.
Second, I'd rather put the search results out from the form. I see no reason for them to be in the same form of the search itself. Then, when performing a searh you should only update the result list:
<p:ajax event="keydown" update="resultTable1" onstart="if (event.keyCode != 13) { return false;}" listener="#{scanResult.checkResult()}" />
Third, as you're using Primefaces, I encourage you to take a look to its p:remoteCommand tool in order to perform ajax-based calls to the beans from your JS code directly. This way you should avoid your second problem, which seems to be that you're preventing the standard form sending on the ajax start event (which might not even get called). You could do something like this:
<p:remoteCommand name="search" update="resultTable1" actionListener="#{scanResult.checkResult}" />
<p:inputText styleClass="searchField" id="counter" value="#{scanResult.serialNumber}"
a:autofocus="true" onkeypress="if (event.keyCode != 13) {search(); return false;}">
<!-- Update the input text value in the bean for each pressed key -->
<p:ajax event="keydown" />
</p:inputText>
See also:
How to choose the right bean scope?
Jsf calling bean method from input text when pressing enter
I have h:selectBooleanCheckbox but it passes 'false' to the validator. always.
<h:panelGroup id="tncPanel">
<label>
<h:selectBooleanCheckbox id="tncSelection" value="#{businessBean.tncSelection}">
<f:validator validatorId="checkboxValidator"/>
<f:attribute name="label" value="Please agree terms and conditions."/>
</h:selectBooleanCheckbox>
I have read and agreed to all the
<a href="#" data-toggle="modal" data-target="#modal-term-and-conditions">
Terms and Conditions.
</a>
</label>
</h:panelGroup>
<h:panelGroup id="buttonPanel">
<h:commandLink id="nextButton" action="#{businessBean.goNext}">
Submit
</h:commandLink>
</h:panelGroup>
Why I have panelGroup here is, based on logic in top of page, I have a logic to display/not the button and checkbox
This is my Validator.
#FacesValidator("checkboxValidator")
public class CheckboxValidator implements Validator {
private static final String DEFAULT_LABEL = "Please confirm the address.";
#Override
public void validate(FacesContext context, UIComponent component, Object value){
String checkBoxValue = String.valueOf(((HtmlSelectBooleanCheckbox) component).getSubmittedValue());
System.out.println("checkBoxValue " + checkBoxValue);
System.out.println("value2: " + value);
String label = String.valueOf(component.getAttributes().get("label"));
if ("null".equals(label)) {
label = DEFAULT_LABEL;
}
if("false".equalsIgnoreCase(checkBoxValue)){
FacesMessage msg = new FacesMessage(null, label);
msg.setSeverity(FacesMessage.SEVERITY_ERROR);
throw new ValidatorException(msg);
}
}
}
Validator sysout always prints checkBoxValue false
UPDATE
After comment on Balusc, I add another sysout to print directly the parameter value. But still it's printing as value2: false.
There is a bug related to this situation , When you render a container that holds a from from another form you the rendered form loses its view state ,Thus form is submitted to no destination solution is to render the form container and the form its self from the other form
For example that won't work :
<h:panelGroup id="panel">
<h:form>
<h:commandButton value="Submit" rendered="#{not testAction.flag}">
<f:ajax render=":panel" listener="#{testAction.submit()}"/>
</h:commandButton>
</h:form>
<h:panelGroup id="panel">
<h:form id="secondForm" rendered="#{testAction.flag}">
<h:selectBooleanCheckbox id="checkBox" value="#{testAction.boolVal}">
<f:validator validatorId="checkboxValidator"/>
</h:selectBooleanCheckbox>
<h:commandButton value="Go" action="#{testAction.go()}"/>
</h:form>
</h:panelGroup>
Second form submit will be like this :
secondForm won't have its view state the form is submitted but with no destination on the server cuz the view object is not fetched on the server that requires the javax.faces.ViewState value to be fetched by what you have to do here is to render form as well in the f:ajax:
<f:ajax render=":panel :secondForm" listener="#{testAction.submit()}"/>
That inform server to backup the second form rendered with the javax.faces.ViewState
Refer to that post : Rendering other form by ajax causes its view state to be lost, how do I add this back? for more info
Hope that was the problem :)
I am creating a simple page that will, after clicking a button, replace one panelGroup with another. First, the code:
<h:body>
<ui:composition template="/elements/templateWithMenu.xhtml">
<ui:define name="content">
<div class="rightContent">
<h:panelGroup id="lol" rendered="#{test.firstStep.booleanValue()}">
<h3>This should disappear</h3>
<h:form id="newPollForm1" rendered="#{test.firstStep.booleanValue()}">
<fieldset>
<h:commandLink value="Next" action="#{test.firstStepCompleted()}" >
<f:ajax execute="#all" render="lol" />
</h:commandLink>
</fieldset>
</h:form>
</h:panelGroup>
<h:panelGroup rendered="#{test.secondStep.booleanValue()}">
Works!
</h:panelGroup>
</div>
</ui:define>
</ui:composition>
</h:body>
The backing bean simply sets the firstStep as false, and secondStep as true.
Now, when I tried running this, I got <f:ajax> contains an unknown id 'lol' - cannot locate it in the context of the component j_idt39. After googling a bit, I found out that for elements outside the form's scope, I need to use SEPARATOR_CHAR (:). That didn't work. So I tried messing with different combinations of #{component} and #{cc}, but nothing works. I even found this awesome explanation, but again, I failed miserably. If I use #all, everything goes ok (one panel is replaced with another), but I really need to render a specific component.
Help? Please?
You need to update the common parent <div class="rightContent"> instead. This one is always rendered and thus guarantees that JavaScript/Ajax can access and mainpulate its children. Replace it by <h:panelGroup layout="block"> and give it an id.
<h:panelGroup layout="block" id="content" class="rightContent">
<h:panelGroup rendered="#{test.firstStep}">
<h3>This should disappear</h3>
<h:form id="newPollForm1">
<fieldset>
<h:commandLink value="Next" action="#{test.firstStepCompleted()}" >
<f:ajax execute="#form" render=":content" />
</h:commandLink>
</fieldset>
</h:form>
</h:panelGroup>
<h:panelGroup rendered="#{test.secondStep}">
Works!
</h:panelGroup>
</h:panelGroup>
Using this Test.java class:
import javax.faces.bean.ManagedBean;
import javax.faces.bean.ViewScoped;
#ManagedBean
#ViewScoped
public class Test {
private int number = 0;
public void firstStepCompleted() {
number++;
}
public boolean isFirstStep() {
return number == 0;
}
public boolean isSecondStep() {
return number == 1;
}
}
Note that I removed the superfluous Boolean#booleanValue() calls and the duplicated rendered contition on the form.
If that still doesn't work, then the /elements/templateWithMenu.xhtml apparently contains another naming container component which has prepended its ID. For starters who haven't memorized all naming container components yet, an easy way to figure the real right client ID is to open the page in browser, rightclick and View Source and then locate the JSF-generated HTML element and take exactly its id attribute value (and prefix it with : in the <f:ajax render>).
i have a div which consists of set of checkboxes built through foreach as follows:
<ice:panelGroup id="myDiv">
<c:forEach items="#{myBean.myCheckBoxes}" var="entry" varStatus="loop">
<input type="checkbox" name="myCheckBoxes" value="#{entry.value}" />
<span class="#{fn:contains(entry.value,'g') ? 'bold-style' : ''}">#{entry.key}</span>
</c:forEach>
</ice:panelGroup>
and i have an icefaces button in the same form of that div, and the button makes partial submit, i don't want to make full form submit.
<ice:commandButton value="Find" action="#{myBean.find}" partialSubmit="true">
<f:ajax execute="#this" render="myDiv" />
</ice:commandButton>
the search method:
public void find() {
// changes the map of the iteration
}
what happens, is that after executing search some components doesn't get removed from the div, although that they are not in the map, guess that the div is not getting refreshed/populated with data correctly, please advise, thanks.
solved by using ui:repeat instead of foreach.
there's a jsf page with a form:
....
<h:form>
<h:commandLink action="#{userBean.logout}" value="Logout" />
</h:form>
....
<ui:repeat value="#{categoryBean.allCategories}" var="c">
....
The categoryBean.allCategories is a call to EJB which is based on a <f:param> from previous page acquired via #ManagedProperty. So when the user clicks on Logout, the whole page evaluates, but without the param and there's NullPointerException. Is there any possibility how to skip the evaluation?
Make use of the rendered attribute:
<h:panelGroup rendered="#{not empty param.name}">
<ui:repeat value="#{categoryBean.allCategories}" var="c">
...
</ui:repeat>
</h:panelGroup>
Alternatively you can also just do a nullcheck in getAllCategories() method.
if (param != null) {
// Return it.
}
return null;