I have a h:inputText with valueChangeListener, when the user type some code another h:inputText display data from MySQL about that code, the valueChangeListener works but the second h:inputText not displayed the value and only do it when I set the readonly attribute or I change the component to h:outputText
my facelets page is:
<h:form id="idFacturacion">
<rich:panel>
<f:facet name="header">
<h:outputText value="FACTURACION AL CLIENTE" />
</f:facet>
<h:panelGrid columns="4">
<h:outputText value="Cedula: " />
<h:inputText value="#{facturaBean.encFactura.cedula}" onchange="submit();" valueChangeListener="#{facturaBean.processValueChange}" />
<h:outputText value="Nombre: " />
<h:inputText value="#{facturaBean.encFactura.nombre_cli}" />
</h:panelGrid>
</rich:panel>
</h:form>
facturaBean is:
#ManagedBean
#SessionScoped
public class FacturaBean {
private EncFactura encFactura = new EncFactura();
//getter and setter
public void processValueChange(ValueChangeEvent event){
String ced = event.getNewValue().toString();
try{
//do the database thing
if(resultSet.next()){
encFactura.setNombre_cli(resultSet.getString("nombre_cli"));
}else{
encFactura.setNombre_cli("");
}
}catch(SQLException error){
facesContext.addMessage(null, new FacesMessage("Hubo un error SQL."));
}
}
}
Please see
Change inputText value from listener method… and
Possible to execute `valueChangeListener` for `p:inputText` without hitting `enter` key?
May I suggest using ajax?
Here is a primefaces example but you could apply to richfaces..
<h:inputText value="#{facturaBean.stringOne}" >
<p:ajax event="change" listener="#{facturaBean.processValueChange}" update="strTwo"/> </h:inputText> <h:outputText value="Nombre: " />
<h:inputText id="strTwo" value="#{facturaBean.stringTwo}" />
</h:panelGrid>
private String stringOne= "";
private String stringTwo= "";
public void processValueChange(){
stringTwo = stringOne;
}
With getters etc.. basically on change, fires off to ajax, you do your database call etc, then it returns the response and updates your other input field, it's a much cleaner way than trying to submit forms etc..
Also are you sure you want session scope?
Related
InputText field in the following dialog retains previous value even though I set it to blank before calling show(). The inputText field is only displayed blank when show() is called for the first time. My bean is session scoped.
<p:dialog id="dlgId" widgetVar="dlgVar" dynamic="true">
<h:form>
<h:panelGrid columns="1">
<h:outputLabel for="nametext" value="Name" />
<p:inputText id="nametext" value="#{myBean.name}" />
</h:panelGrid>
<p:commandButton value="Save" actionListener="#{myBean.saveAction}" />
</h:form>
public void add(TreeNode selectedTreeNode) {
setName("");
RequestContext.getCurrentInstance().execute("PF('dlgVar').show()");
}
public void setName(String name) {
this.name = name;
}
public String getName() {
return name;
}
How can I get the inputTEext field to display the value I set before calling show() rather then the value previously entered by the user?
The thing is: you need to update your form. To make it, you can use one of these solutions.
Solution 1 : update it from your xhtml
<h:form id="form">
<h:panelGrid columns="1">
<h:outputLabel for="nametext" value="Name" />
<p:inputText id="nametext" value="#{myBean.name}" />
</h:panelGrid>
<p:commandButton value="Save" actionListener="#{myBean.saveAction}" update=":form" />
</h:form>
Solution 2 : update it from your managedBean
YourXhtml
<h:form id="form">
...
</h:form>
YourManagedBean
public void saveAction() {
...
name = "";
RequestContext.getCurrentInstance().update(":form");
}
You can also read this post Can I update a JSF component from a JSF backing bean method?.
Solution 3 : update it using an Ajax event
You can also add an ajax event
<p:commandButton value="Save" type="button" >
<p:ajax event="click" listener="#{myBean.saveAction}" update=":form"/>
</p:commandButton>
I want to change the inputTexts' values when I choose another Skin from my selectOneMenu.
Everything is doing well, my Converter gives back the right Object from the menu, but the inputTexts are not updated.
<h:form>
<h:selectOneMenu id="dropdownSkin"
value="#{helloBean.currentSkin}" defaultLabel="Select a skin.."
valueChangeListener="#{helloBean.skinValueChanged}" immediate="true"
onchange="this.form.submit()" converter="SkinConverter" >
<f:selectItems value="#{helloBean.mySkinsSI}" var="c"
itemValue="#{c.value}" />
</h:selectOneMenu>
<br />
<h:inputText id="name" value="#{helloBean.currentSkin.title}"></h:inputText>
<br />
<h:inputText id="tcolor" value="#{helloBean.currentSkin.titleBar.textColor}"></h:inputText>
<br />
<h:inputText id="bcolor" value="#{helloBean.currentSkin.titleBar.backgroundColorStart}"></h:inputText>
</h:form>
Here is what my Bean looks like. I debugged it and the Object currentSkin is set correctly. Now i need to know how to update the textfields content.
#ManagedBean
#SessionScoped
public class HelloBean implements Serializable {
private static final long serialVersionUID = 1L;
private List<ExtendedSkin> mySkins;
private List<SelectItem> mySkinsSI;
private ExtendedSkin currentSkin;
public void skinValueChanged(ValueChangeEvent e) {
currentSkin = (ExtendedSkin) e.getNewValue();
FacesContext.getCurrentInstance().renderResponse();
}
public List<ExtendedSkin> getMySkins() {
mySkins = XMLParser.readExtendedSkins();
return mySkins;
}
public List<SelectItem> getMySkinsSI() {
mySkinsSI = new LinkedList<SelectItem>();
for (ExtendedSkin s : getMySkins()) {
mySkinsSI.add(new SelectItem(s, s.getTitle()));
}
return mySkinsSI;
}
public void setMySkinsSI(List<SelectItem> myItems) {
this.mySkinsSI = myItems;
}
public ExtendedSkin getCurrentSkin() {
if (currentSkin == null) {
currentSkin = getMySkins().get(0);
}
return currentSkin;
}
public void setCurrentSkin(ExtendedSkin currentSkin) {
this.currentSkin = currentSkin;
}
}
The problem here is that the converter is doing its work filling the helloBean.currentSkin object, but the values in the <h:inputText> that are bounded to this helloBean.currentSkin: title, textColor and backgroundColorStart will be send to the server and replace the actual values that were loaded by the converter. In other words:
The converter is executed and builds the helloBean.currentSkin based on the selected value.
The <h:inputText id="name"> empty value is sent to server and will be injected in helloBean.currentSkin.title. Same behavior for the other 2 <h:inputText>s.
The view will be loaded using the selected helloBean.currentSkin and it will load the helloBean.currentSkin.title with the empty value. Same behavior for the other 2 <h:inputText>s.
There are two possible solutions to this problem:
Move the <h:inputText>s outside the form, so the empty values won't be send to the server. When loading the view, it will maintain the values loaded in the converter.
<h:form>
<h:selectOneMenu id="dropdownSkin"
value="#{helloBean.currentSkin}" defaultLabel="Select a skin.."
valueChangeListener="#{helloBean.skinValueChanged}" immediate="true"
onchange="this.form.submit()" converter="SkinConverter" >
<f:selectItems value="#{helloBean.mySkinsSI}" var="c"
itemValue="#{c.value}" />
</h:selectOneMenu>
</h:form>
<br />
<h:inputText id="name" value="#{helloBean.currentSkin.title}"></h:inputText>
<!-- rest of Facelets code... -->
Since you're loading the helloBean.currentSkin while changing the selected value on your dropdownlist, you can add ajax behavior using <f:ajax> tag component inside the <h:selectOneMenu> and update the fields in a cleaner way. I would opt for this solution.
<h:form>
<!-- Note that there's no need of the onchange JavaScript function -->
<h:selectOneMenu id="dropdownSkin"
value="#{helloBean.currentSkin}" defaultLabel="Select a skin.."
valueChangeListener="#{helloBean.skinValueChanged}" immediate="true"
converter="SkinConverter" >
<f:selectItems value="#{helloBean.mySkinsSI}" var="c"
itemValue="#{c.value}" />
<f:ajax process="#this" render="name tcolor bcolor" />
</h:selectOneMenu>
<br />
<h:inputText id="name" value="#{helloBean.currentSkin.title}" />
<h:inputText id="tcolor" value="#{helloBean.currentSkin.titleBar.textColor}" />
<br />
<h:inputText id="bcolor"
value="#{helloBean.currentSkin.titleBar.backgroundColorStart}" />
</h:form>
You can learn more about <f:ajax> in online tutorial like this one.
Since you're going to use an ajax call in your page, you should change your managed bean scope from #SessionScoped to #ViewScoped. More info about this here: Communication in JSF 2
I have a primefaces datatable. I populate it from the database. One of the fields is a boolean represented by a checkbox. I want that if I check or uncheck the checkbox, that I can save the change back to the database.
I have tried passing the current value of the row to the managed bean to save, but the new value of the checkbox isn't reflected in the current row object. How can I get the change into the current row object so I can successfully save the change to the DB?
Here is what I am doing now... I have tried to provide just what is needed. If it is too much information or too little, let me know. Thanks.
#ManagedBean(name = "itemManagerBean")
#ViewScoped
public class ItemManagerBean implements Serializable {
...
public ArrayList<Item> getAllItemsForUser() {
List list = ecf.findByPartyId(user.getPartyId());
ArrayList<Item> itemList = new ArrayList<>(list);
return (itemList);
}
...
public String saveItem(Item item){
System.out.println(item.toString());
ecf.updateRecord(item);
return (null);
}
}
//item class
public class Item {
private BigInteger itemId;
private String name;
priave boolean saleable; //database column is not null
//getters and setters
}
//facelet
<h:form>
<p:dataTable id="id_itemList"
var="item"
value="#{itemManagerBean.allItemsForUser}" >
<p:column headerText="ID">
<h:outputText value="#{item.itemId}" />
</p:column>
<p:column headerText="Name">
<h:outputText value="#{item.name}" />
</p:column>
<p:column headerText="Saleable" >
<p:selectBooleanCheckbox value="#{item.saleable}" />
</p:column>
<p:column width="15" >
<p:commandButton id="id_saveRowButton" icon="ui-icon-disk"
title="Save" action="#{itemManagerBean.saveItem(item)}"/>
</p:column>
</p:dataTable>
</h:form>
You need to create a selectedItem property in ItemManagerBean and update its value when the user clicks on the commandButton:
In ItemManagerBean
private Item selectedItem;
// getter and setter
In the xhtml page
<p:column width="15" >
<p:commandButton id="id_saveRowButton" icon="ui-icon-disk"
title="Save" action="#{itemManagerBean.saveItem}">
<f:setPropertyActionListener value="#{item}" target="#{itemManagerBean.selectedItem}" />
</p:commandButton>
</p:column>
(Note that you don't need to pass item through saveItem method. Modify saveItem in the managed bean in order to make it work with selectedItem instead of accepting an input item).
Links:
example in the PrimeFaces showcase
Passing parameter to JSF action
BalusC blog
I have a h:datatable showing a list of rows, and the fields of each row are input fields.
I render an "Add Row" button before the table, and a "Remove Row" button on each row of the table.
The baking bean is viewScoped, and the buttons add/remove elements from the java list in the backing bean, and then return to the same view.
I set the immediate attribute to "true" in the buttons in order to not validate the input fields when I add or remove a row.
Everything works ok but one thing: the values of the input fileds are cleared. I thought that the view kept the values beacuse the bean is viewScoped.
How can I achieve adding/removing rows without triggering validations and keeping the values that were already typed by the user in the form?
My view:
<h:form>
<h:commandButton value="Añadir Fila" immediate="true" action="#{tablaController.addRowAction}" />
<h:dataTable value="#{tablaController.lista}" var="fila" cellpadding="0" cellspacing="0" border="1">
<f:facet name="header">TABLA</f:facet>
<h:column>
<f:facet name="header"><h:outputLabel value="NOMBRE" /></f:facet>
<h:inputText id="nom" value="#{fila.nombre}" />
<h:message for="nom" class="msjError" />
</h:column>
<h:column>
<f:facet name="header"></f:facet>
<h:commandButton value="Quitar Fila" immediate="true" action="#{tablaController.removeRowAction(fila)}" />
</h:column>
</h:dataTable>
</h:form>
My backing bean:
#ManagedBean(name="tablaController")
#ViewScoped
public class TablaController {
private List<Fila> lista;
...
public TablaController() { }
...
#PostConstruct
public void init() {
this.lista = new ArrayList<Fila>();
for (int i=0; i<5; i++) {
Fila fila = new Fila();
fila.setNombre("");
this.lista.add(i,fila);
}
}
...
public String addRowAction () {
Fila fila = new Fila();
fila.setNombre("");
this.lista.add(fila);
return "";
}
public String removeRowAction (Fila f) {
boolean exito = this.lista.remove(f);
return "";
}
...
}
UPDATE --> MY SOLUTION:
I write here my solution if someone is interested.
The problem is that I use immediate="true" to skip validations, but this makes to skip the update_model_values too, so that the values entered by the user in the form are lost after clicking the add/remove buttons and re-redenring the page.
As I use "JSR-303 bean validation", my solution was to skip validations using the f:validateBean to enable/disable them. Depending on the button I click, if I want the validations to execute, I enable the bean validation (for example in a "submit" button), and if I want to skip them, I disable bean validation (like in the add/remove row buttons). But anyway the update_model_values always executes, so the values are not lost.
Here's the view:
<h:form>
<f:validateBean disabled="#{!empty param['disableValidation']}">
<h:commandButton value="Añadir Fila" action="#{tablaController.addRowAction}">
<f:param name="disableValidation" value="true" />
</h:commandButton>
<h:dataTable value="#{tablaController.lista}" var="fila" cellpadding="0" cellspacing="0" border="1">
<f:facet name="header">TABLA</f:facet>
<h:column>
<f:facet name="header"><h:outputLabel value="NOMBRE" /></f:facet>
<h:inputText id="nom" value="#{fila.nombre}" />
<h:message for="nom" class="msjError" />
</h:column>
<h:column>
<f:facet name="header"></f:facet>
<h:commandButton value="Quitar Fila" action="#{tablaController.removeRowAction(fila)}">
<f:param name="disableValidation" value="true" />
</h:commandButton>
</h:column>
</h:dataTable>
<h:commandButton value="Submit" action="#{tablaController.saveData}" />
</f:validateBean>
</h:form>
The backing bean:
#ManagedBean(name="tablaController")
#ViewScoped
public class TablaController {
private List<Fila> lista;
...
public TablaController() { }
...
#PostConstruct
public void init() {
this.lista = new ArrayList<Fila>();
for (int i=0; i<5; i++) {
Fila fila = new Fila();
fila.setNombre("fila "+i);
this.lista.add(i,fila);
}
}
...
public String addRowAction () {
Fila fila = new Fila();
fila.setNombre("");
this.lista.add(fila);
return "";
}
public String removeRowAction (Fila f) {
this.lista.remove(f);
return "";
}
...
public String saveData () {
...
//processes the valid data
//for example, calls to a service method to store them in a database
...
return "";
}
...
}
I set the immediate attribute to "true" in the buttons in order to not validate the input fields when I add or remove a row.
immediate="true" is the wrong tool for the job. It should be used to prioritize validation, not to enable/disable validation. The difference is rather huge as you encountered yourself.
You want to trigger validation conditionally. In case of e.g. required="true" that'd be as easy as
<h:inputText ... required="#{saveButtonPressed}" />
where #{saveButtonPressed} evaluates true when the save button is pressed. E.g. when its client ID is present in request parameter map.
In case of JSR 303 bean validation, that'd be a matter of
<f:validateBean disabled="#{not saveButtonPressed}">
<h:inputText ... />
</f:validateBean>
or with OmniFaces <o:validateBean> which allows controlling that on a per-command basis.
<h:commandButton id="add" ...>
<o:validateBean disabled="true" />
</h:commandButton>
I had exactly the same problem. In short, you can NOT use immediate for action that update data table(UIData) or facelet repeat. Short explanation:submitted values are not kept for re-display if inputs in UIData do not go through validation. Long explanation can be found here: long explanation and a related bug in Mojarra
How can I add in commandbutton inside datatable?
<hx:dataTableEx value="#{searchData.searchFriends}" var="s">
<hx:columnEx>
<f:facet name="header">
<h:outputText value="First Name" />
</f:facet>
<hx:requestLink action="#{pc_Search.doAddFriendAction}">
<h:outputText value="Add as Friend" />
<f:param name="friendId" value="#{s.memberId}" />
</hx:requestLink>
</hx:columnEx>
</hx:dataTableEx>
To get the data at backend
String friendId = (String)getRequestParam().get("friendId");
But once I change the requestlink to command button the friedId = null? any idea how can i pass value using command button
Wrap the datatable value in a DataModel. Then you can obtain the selected row by DataModel#getRowData().
public class Bean {
private List<Friend> friends;
private DataModel friendsModel;
public Bean () {
friends = getItSomehow();
friendsModel = new ListDataModel(friends);
}
public void addAsFriend() {
Friend selectedFriend = (Friend) friendsModel.getRowData();
// ...
}
}
with
<h:dataTable value="#{bean.friendsModel}" var="friend">
<h:column>
<h:commandButton value="Add as friend" action="#{bean.addAsFriend}" />
</h:column>
</h:dataTable>
Should work as good with IBM Faces Client Framework (those hx: components).