my example:
<p:growl id="growlId"/>
<h:form id="form">
<h:inputText id="input" value="#{messageManagedBean.message}"
required="true"
requiredMessage="input is not null!"/>
<p:message for="input"/>
<p:commandButton value="Execute JSF Lifecycle - Invoke Action One"
validateClient="true"
action="#{messageManagedBean.doSomeAction}"
update="form growlId"></p:commandButton>
</h:form>
public String doSomeAction() {
if (!this.message.equals("")) {
FacesContext.getCurrentInstance().addMessage("growlId", new FacesMessage("Header", "Success!"));
}
return "";
}
in this case, i check if input null, will show requiredMessage="input is not null!" when click commandbutton, but growl show this message too.
i want to specified id of growl in server side (bean), i'm to try specified only update="form" :
<p:commandButton ...
action="#{messageManagedBean.doSomeAction}"
update="form"></p:commandButton>
but, if input not null, when submit,i dont receive message of growl,
thanks all!
I found a solution, i'm using RequestContext.getCurrentInstance().update("growlId");
Related
I have a submit button that submits to a database using the button below.
If this button return "error", I want to use an AJAX to remove the form and its content and add a text in place of the form.
Edit:
The reason of staying in the same page after clicking the submit button is because, the same CMS content above and below the form is used on both the current page and redirected page after submit. Thus, its easier to just remove form and display the error page. This will avoid the whole page to reload due to redirect.
</h:form id="myForm">
...
<h:commandButton action="#{testBean.submitForm}"
type="submit" value="Create Button">
</h:commandButton>
</h:form>
Remember to use <h:head> and <h:body> instead of <head> and <body>.
<h:panelGroup id="mypanelgroup">
<h:outputText value="#{testBean.errorMessage}" rendered="#{testBean.errorMessage ne null}" />
<h:form rendered="#{testBean.errorMessage eq null}">
<!-- -->
<h:commandButton value="submit" action="#{testBean.submitForm()}">
<f:ajax execute="#form" render=":mypanelgroup"></f:ajax>
</h:commandButton>
</h:form>
</h:panelGroup>
#ManagedBean
public class TestBean {
private String errorMessage = null;
public String getErrorMessage() {
return errorMessage;
}
public void submitForm(){
// .....
//if(error){
this.errorMessage = "My error Message";
//}
}
}
Initially, the <h:outputText> is not rendered because errorMessage by default was set to null.
I have a dataTable with a list of items and a checkbox for selecting an item to edit. Ticking an item and clicking the edit button pops up a component which has fields and update and cancel buttons. Here's what happens.
Dialog appears
I empty all fields and click UPDATE, required messages appear since all fields are empty, data is not saved
Click CANCEL, dialog disappears
Click and edit the same item again
Some fields are not showing. I checked the datatable and database, data for the item still exists. Just not showing on the edit dialog the 2nd time around.
I noticed that the fields not showing are only those that have NULL attributes. NOT NULL fields are fine. I wonder if this has something to do with sessions. (Using Primefaces for all components)
Code for the edit dialog
<p:dialog header="#{bundle.Edit}" modal="true" widgetVar="editDialog" resizable="false">
<h:form id="edit-form">
<p:messages id="edit-error" autoUpdate="true" closable="true"/>
<h:outputLabel value="#{bundle.Name}" for="name" /><span class="required">＊</span>
<p:inputText id="name" value="#{controller.selected.name}" required="true" requiredMessage="#{bundle.Name} #{bundle.FieldIsRequired}" maxlength="45"/>
<h:outputLabel value="#{bundle.Input}" for="input" /><span class="required">＊</span>
<h:selectOneRadio id="input" value="#{controller.selected.input}" required="true" requiredMessage="#{bundle.Input} #{bundle.FieldIsRequired}">
<f:selectItem itemLabel="◯ " itemValue="0" />
<f:selectItem itemLabel="☓ " itemValue="1" />
</h:selectOneRadio>
<h:outputLabel value="#{bundle.IsOption}" for="isOption" /><span class="required">＊</span>
<h:selectOneRadio id="isOption" value="#{controller.selected.isOption}" required="true" requiredMessage="#{bundle.IsOption} #{bundle.FieldIsRequired}">
<f:selectItem itemLabel="◯ " itemValue="0" />
<f:selectItem itemLabel="☓ " itemValue="1" />
</h:selectOneRadio>
<h:outputLabel value="#{bundle.Remark}" for="remark" />
<p:inputTextarea id="remark" value="#{controller.selected.remark}"/>
<p:commandButton action="#{controller.update()}"
value="#{bundle.Save}"
actionListener="#{controller.prepareList()}"
oncomplete="handleEditDialog(xhr, status, args)"
update=":form:datatable :edit-form:edit-error"
/>
<p:commandButton value="#{bundle.Cancel}"
onclick="editDialog.hide(); reset();"
type="button"/>
</h:form>
</p:dialog>
Code for the update function
public String update() {
RequestContext context = RequestContext.getCurrentInstance();
try {
current.setUpdateDate(new Date());
Map<String, Object> param = JsfUtil.getExternal().getSessionMap();
int createUser = (Integer) param.get("LOGIN_ID");
Account account = accountFacade.find(createUser);
current.setUpdateUser(account);
getFacade().edit(current);
search();
prepareList();
JsfUtil.addSuccessMessage(ResourceBundle.getBundle(JsfUtil.getSessionBundle()).getString("Updated"));
updateOk = true;
current = null;
context.addCallbackParam("updated", true);
return "";
} catch (Exception e) {
if (e.getCause().getCause().getMessage().contains("uk_")) {
JsfUtil.addErrorMessage("edit-form:edit-error",JsfUtil.getResourceString("Duplicate"));
context.addCallbackParam("updated", false);
} else {
JsfUtil.addErrorMessage(e, ResourceBundle.getBundle(JsfUtil.getSessionBundle()).getString("PersistenceErrorOccured"));
context.addCallbackParam("updated", false);
}
return null;
}
}
Based on what you are describing I think the following scenario is happening. When you see the form and you delete all fields and you hit save, the components that have no validators are actually overwriting some of the previous property values of your bean. That's why when you reload it for a second edit, you'll notice that all the components that have a validator attached (e.g required = true) are appearing but those with no validators are blank. In reality, you are actually doing a partial update. What you actually need to do is mark all fields as required to avoid that problem.
My teammate just found out a fix for this one. There is a function on the controller generated by NetBeans called prepareList().
public String prepareList() {
recreateModel();
return "";
}
private void recreateModel() {
items = null;
}
Basically we added this on catch block of the update() function. It is called after every unsuccessful update and recreates the model. The bug existed because the field retained its state of not having a value after an unsuccessful update.
I'm having trouble with passing a single value from the data table to the backing bean. I always get the value of 0 when I try to print it in the method in the confirm dialog but when I try to print it in the method in the command button, it shows the value that I need. I think it resets the value or whatever.
<p:dataTable id="labLists" var="lab" value="#{coltsysHome.laboratory}" >
.....
<p:column headerText=" ">
<p:commandButton value="DELETE" onclick="confDlg.show()" icon="ui-icon-closethick" action="#{coltsysHome.action}">
<f:setPropertyActionListener value="#{lab.lab_id}" target="#{coltsysHome.lab_id_del}" />
</p:commandButton>
</p:column>
For the confirm dialog:
<p:confirmDialog widgetVar="confDlg" header="DELETE LABORATORY" message="Are you sure you want to delete this lab?">
<h:form id="delDlgForm">
<p:commandButton id="confirm" value="Yes Sure" oncomplete="confDlg.hide()" actionListener="#{coltsysHome.deleteLab(event)}"/>
<p:commandButton id="decline" value="Not Yet" onclick="confDlg.hide()" type="button" />
</h:form>
Bean (RequestScoped):
...getter and setter (lab_id_del)
public void deleteLab(ActionEvent event) {
FacesContext context = FacesContext.getCurrentInstance();
String cpath = context.getExternalContext().getRequestContextPath();
try (Connection conn = dataSource.getConnection()) {
ColtsysDAO coltsysDAO = new ColtsysDAO(conn);
coltsysDAO.deleteLab(lab_id_del, coltsysDAO.getUserID(getUser_name()));
} catch (Exception e) {
e.printStackTrace(System.err);
}
}
public void action() {
System.out.println("lab_id_del: " + lab_id_del);
}
The first and foremost change you need to do is: RequestScoped->ViewScoped as Luiggi Mendoza has suggested. you might need to add process attribute to the p:commandButton with the id of the p:dataTable. Also you can pass the lab object directly into action method without using f:setPropertyActionListener as: action="#{coltsysHome.action(lab)}" and take it as: public String action(Lab lab). Why not actionListener!
I have a p:dataGrid that used to update itself in 3.0.1. Now I upgraded to PF 3.1 and the ajax update event of the "availableIcons" component does not fire anymore. I don't get an error that the component is not found in the view.
The XHMTL
<h:form id="Application">
......
<p:confirmDialog id="iconDialog" message="Select one icon"
showEffect="bounce" hideEffect="explode" header="Icon Selection"
severity="alert" widgetVar="iconSelect" modal="false">
<p:dataGrid id="availableIcons" var="icon"
value="#{appEditController.availableIcons}" columns="4">
<p:column>
<p:panel id="pnl" header="" style="text-align:center">
<h:panelGrid columns="1" style="width:100%" id="iconPanelGrid">
<p:graphicImage value="/resources/icons/#{icon.icon}"
id="iconImage" />
<p:selectBooleanCheckbox id="iconSelector"
value="#{icon.selected}"
disabled="#{appEditController.isIconSelected(icon)}">
<p:ajax update="availableIcons" event="change"
process="availableIcons"
listener="#{appEditController.iconSelectedChanged(icon)}" />
</p:selectBooleanCheckbox>
</h:panelGrid>
</p:panel>
</p:column>
</p:dataGrid>
<p:commandButton value="Done" update="currentIcon"
action="#{appEditController.updateCurrentIcon}" ajax="false"
oncomplete="iconSelect.hide()" />
</p:confirmDialog>
.......
</h:form>
I don't see what's missing or what's incorrect.
This is the backing bean code
public void updateCurrentIcon() {
for (IconVO iconVO : availableIcons) {
if (iconVO.isSelected()) {
log.debug("CURRENT ICON IS NOW " + iconVO.getIcon());
currentIcon = iconVO;
break;
}
}
}
public void iconSelectedChanged(IconVO iconVO) {
if (iconVO == currentIcon) {
log.debug("NULLING ICON");
currentIcon = null;
} else {
log.debug("SETTING NEW ICON");
currentIcon = iconVO;
}
}
public boolean isIconSelected(IconVO iconVO) {
log.debug("IS ICON SELECTED " + iconVO.getIcon());
if (currentIcon == null
|| iconVO.getIcon().equals(currentIcon.getIcon())) {
return false;
}
return currentIcon != null;
}
I tried to do update="#form", then the update fires but it closes the modal panel completely.
Thanks,
Coen
Indeed, the way how PrimeFaces locates components by relative client ID has been changed in PrimeFaces 3.1 to adhere the UIComponent#findComponent() javadoc.
In your particular case, you need to specify the absolute client ID of the <p:dataGrid> instead. Easiest way to figure it is to check the ID of the <p:dataGrid> in the generated HTML source. With the code given so far, that would be Application:availableIcons. You need to prefix it with : to make it absolute and then reference it in update as follows:
<p:ajax update=":Application:availableIcons" ... />
Update as per the comments it turns out to not work at all. You could try wrapping the table in some invisible containing component like <h:panelGroup> and update it instead. Alternatively, you could consider moving the <h:form> into the dialog and use update="#form" instead. Having the <h:form> outside the dialog is kind of odd anyway. You surely won't submit all the other inputs which are outside the dialog inside the same form.
How can I show/hide component with JSF?
I am currently trying so do the same with the help of javascript but not successfull.
I cannot use any third party libraries.
Thanks| Abhi
You can actually accomplish this without JavaScript, using only JSF's rendered attribute, by enclosing the elements to be shown/hidden in a component that can itself be re-rendered, such as a panelGroup, at least in JSF2. For example, the following JSF code shows or hides one or both of two dropdown lists depending on the value of a third. An AJAX event is used to update the display:
<h:selectOneMenu value="#{workflowProcEditBean.performedBy}">
<f:selectItem itemValue="O" itemLabel="Originator" />
<f:selectItem itemValue="R" itemLabel="Role" />
<f:selectItem itemValue="E" itemLabel="Employee" />
<f:ajax event="change" execute="#this" render="perfbyselection" />
</h:selectOneMenu>
<h:panelGroup id="perfbyselection">
<h:selectOneMenu id="performedbyroleid" value="#{workflowProcEditBean.performedByRoleID}"
rendered="#{workflowProcEditBean.performedBy eq 'R'}">
<f:selectItem itemLabel="- Choose One -" itemValue="" />
<f:selectItems value="#{workflowProcEditBean.roles}" />
</h:selectOneMenu>
<h:selectOneMenu id="performedbyempid" value="#{workflowProcEditBean.performedByEmpID}"
rendered="#{workflowProcEditBean.performedBy eq 'E'}">
<f:selectItem itemLabel="- Choose One -" itemValue="" />
<f:selectItems value="#{workflowProcEditBean.employees}" />
</h:selectOneMenu>
</h:panelGroup>
Generally, you need to get a handle to the control via its clientId. This example uses a JSF2 Facelets view with a request-scope binding to get a handle to the other control:
<?xml version='1.0' encoding='UTF-8' ?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml"
xmlns:h="http://java.sun.com/jsf/html">
<h:head><title>Show/Hide</title></h:head>
<h:body>
<h:form>
<h:button value="toggle"
onclick="toggle('#{requestScope.foo.clientId}'); return false;" />
<h:inputText binding="#{requestScope.foo}" id="x" style="display: block" />
</h:form>
<script type="text/javascript">
function toggle(id) {
var element = document.getElementById(id);
if(element.style.display == 'block') {
element.style.display = 'none';
} else {
element.style.display = 'block'
}
}
</script>
</h:body>
</html>
Exactly how you do this will depend on the version of JSF you're working on. See this blog post for older JSF versions: JSF: working with component identifiers.
Use the "rendered" attribute available on most if not all tags in the h-namespace.
<h:outputText value="Hi George" rendered="#{Person.name == 'George'}" />
You should use <h:panelGroup ...> tag with attribute rendered. If you set true to rendered, the content of <h:panelGroup ...> won't be shown. Your XHTML file should have something like this:
<h:panelGroup rendered="#{userBean.showPassword}">
<h:outputText id="password" value="#{userBean.password}"/>
</h:panelGroup>
UserBean.java:
import javax.faces.bean.ManagedBean;
import javax.faces.bean.SessionScoped;
#ManagedBean
#SessionScoped
public class UserBean implements Serializable{
private boolean showPassword = false;
private String password = "";
public boolean isShowPassword(){
return showPassword;
}
public void setPassword(password){
this.password = password;
}
public String getPassword(){
return this.password;
}
}
One obvious solution would be to use javascript (which is not JSF). To implement this by JSF you should use AJAX. In this example, I use a radio button group to show and hide two set of components. In the back bean, I define a boolean switch.
private boolean switchComponents;
public boolean isSwitchComponents() {
return switchComponents;
}
public void setSwitchComponents(boolean switchComponents) {
this.switchComponents = switchComponents;
}
When the switch is true, one set of components will be shown and when it is false the other set will be shown.
<h:selectOneRadio value="#{backbean.switchValue}">
<f:selectItem itemLabel="showComponentSetOne" itemValue='true'/>
<f:selectItem itemLabel="showComponentSetTwo" itemValue='false'/>
<f:ajax event="change" execute="#this" render="componentsRoot"/>
</h:selectOneRadio>
<H:panelGroup id="componentsRoot">
<h:panelGroup rendered="#{backbean.switchValue}">
<!--switchValue to be shown on switch value == true-->
</h:panelGroup>
<h:panelGroup rendered="#{!backbean.switchValue}">
<!--switchValue to be shown on switch value == false-->
</h:panelGroup>
</H:panelGroup>
Note: on the ajax event we render components root. because components which are not rendered in the first place can't be re-rendered on the ajax event.
Also, note that if the "componentsRoot" and radio buttons are under different component hierarchy. you should reference it from the root (form root).
check this below code.
this is for dropdown menu. In this if we select others then the text box will show otherwise text box will hide.
function show_txt(arg,arg1)
{
if(document.getElementById(arg).value=='other')
{
document.getElementById(arg1).style.display="block";
document.getElementById(arg).style.display="none";
}
else
{
document.getElementById(arg).style.display="block";
document.getElementById(arg1).style.display="none";
}
}
The HTML code here :
<select id="arg" onChange="show_txt('arg','arg1');">
<option>yes</option>
<option>No</option>
<option>Other</option>
</select>
<input type="text" id="arg1" style="display:none;">
or you can check this link
click here