<p:dataList value="#{testBean.students}" var="stud" rows="5" >
<p:column>
<p:commandLink value="#{stud.name}" action="#{testBean.edit}" process="#this">
</p:commandLink>
</p:column>
</p:dataList>
I am using simple data list and used command Link to edit.This data list is a list of students.
My question is datlist has student name with
"teststudent1234567890123456789012345678901234567890".
How do i wrap this name in a datalist so that I can display only teststudent and wrap word so that it can fit in datalist. Validation is done and student name can have a maximum of 50 character.
Use #{fn:substring(name, begin, end)} like that #{fn:substring(stud.name, 0, 10)}. Don't forget to include the namespace in your view in order to make jstl functions available for your page: xmlns:fn="http://java.sun.com/jsp/jstl/functions". Here you have an example and also the specification of jstl 1.1 functions.
Related
Actually I'm working with Myfaces version 2.2.9 and I've the following structure to generate any panel according with a specific number selected by the user.
...
<ui:repeat value="#{garajes}" var="garaje" varStatus="loop">
<p:panelGrid >
<h:outputLabel value="Numero de garaje #{loop.index+1}: " />
<h:outputLabel value="Matricula #{loop.index+1}: " />
<p:inputText value="#{garaje.numeroGaraje}" maxlength="5" >
</p:inputText>
<p:inputText id="matriculaInmobiliariaGaraje-#{loop.index+1}" value="#{garaje.matriculaInmobiliaria}"
maxlength="20">
</p:inputText>
...
</p:panelGrid>
</ui:repeat>
....
So, when is rendered the above code the identifiers are weird, has another things like the following image:
So I don't know how to remove this weird things inside of id
Note: I need a specific id to update another component inside of the loop.
What can I do to get a right identifiers inside of ui:repeat?
As to the concrete problem, just give all NamingContainer components a fixed ID. This includes the <ui:repeat> itself.
<ui:repeat id="garajes" ...>
As to the concrete requirement, you're overcomplicating things. A NamingContainer will all by itself worry about uniqueness of IDs of children. Your attempt in id="matriculaInmobiliariaGaraje-#{loop.index+1}" won't work at all as #{loop} variable isn't available during view build time, when the component is being instantiated with id. Get rid of it. You can inside a NamingContainer just use a relative ID to reference another component in the same NamingContainer.
<ui:repeat ...>
<p:inputText id="foo" />
<p:inputText ...><p:ajax ... update="foo" /></p:inputText>
</ui:repeat>
This will work just fine.
See also:
How to find out client ID of component for ajax update/render? Cannot find component with expression "foo" referenced from "bar"
How to use EL with <ui:repeat var> in id attribute of a JSF component
I started using primafaces and I came up with the following scenario. The user rates and element and if the rating is valid then a span block appears or it hides depending the case. I am based on the example here: (http://www.primefaces.org/showcase/ui/input/rating.xhtml ) with the ajax approach. Note that a rate is valid if the user clicks on any star. So here's what I've done so far:
<h:form>
<p:panelGrid>
<p:row>
<p:column>
<p:rating value="#{searchBean.dateWeight}">
<p:ajax event="rate" listener="#{searchBean.addDatetoWeights}"
update="dates" render="dates" />
<p:ajax event="cancel"
listener="#{searchBean.removeDatefromWeights}"
update="dates" />
</p:rating>
<h:panelGroup id="dates" rendered="#{searchBean.dateRated}">
<h:outputText value="test"></h:outputText>
</h:panelGroup>
</p:column>
</p:row>
</p:panelGrid>
</h:form>
segment of the bean:
boolean dateRated;
int dateWeight;
public void addDatetoWeights(){
dateRated=true;
weights.put("date",dateWeight);
System.out.println(dateRated);
}
public void removeDatefromWeights(){
dateRated=false;
if(weights.containsKey("date"))
weights.remove("date");
}
Let's go back to the basics: HTML and JavaScript. It's important to also know them before diving into JSF. JSF is in the context of this question merely a HTML/JS code generator.
With <p:ajax update="dates"> you're basically telling JavaScript to grab the HTML element by the given ID and then replace its contents with the new contents retrieved from server in ajax response. However, as the <h:panelGroup id="dates"> is in first place never rendered to the HTML output, JavaScript can't find the element by document.getElementById() stuff in order to replace its contents and then just ignores the instruction.
Instead, the <p:ajax update="dates"> must refer a component which is always rendered, so that JavaScript can actually find it. Only its contents can be conditionally rendered.
Here's a rewrite:
<h:panelGroup id="dates">
<h:outputText value="test" rendered="#{searchBean.dateRated}" />
</h:panelGroup>
See also:
Why do I need to nest a component with rendered="#{some}" in another component when I want to ajax-update it?
first excuse my english if it's not correct ...
I've a probleme with a primeface's component, I'm trying to refresh a p:selectOneMenu from a p:commandButton, but it's doesn't work (it 's work on another xhtml page, but not here and I can't understand why ...)
First I select an item from an p:autocomplete which update a backingbean's attribute ( for example : userChoose ).
then the p:commandButton is able to call his listener and add userChoose to a list, but i can't refresh the selectOneMenu that display the list. I have to use another p:commandButton to refresh the list.
My form is included into a p:tabMenu in another xhtml page.
<p:autoComplete id="acPojo" value="#{forumBean.user}"
completeMethod="#{autoCompleteBean.completeUser}"
converter="#{userConverter}" forceSelection="true"
var="usr" itemLabel="#{usr.loginUtilisateur}" itemValue="#{usr}">
<p:column>
<h:outputText value="#{usr.loginUtilisateur}"/>
</p:column>
</p:autoComplete>
<p:commandButton value="ajouter" process="acPojo #this "
udpate=":tabView:formSujet:listeUser" actionListener="#{forumBean.addUser}"/>
<p:selectOneMenu value="#{forumBean.user}" converter="#{userConverter}" var="us" id="listeUser"
itemValue="#{us}" itemLabel="#{us.loginUtilisateur}">
<f:selectItems value="#{forumBean.newSujet.listeUserAllowed}" var="User"
itemValue="#{User}" itemLabel="#{User.loginUtilisateur}" />
<p:column>
<h:outputText value="#{us.loginUtilisateur}"/>
</p:column>
<p:ajax process="#this" />
</p:selectOneMenu>
<p:commandButton id="refreshAdmin" icon="ui-icon-arrowrefresh-1-w"
update=":tabView:formSujet:listeUser" />
Thanks for help.
From your code:
udpate=":tabView:formSujet:listeUser"
This has at least 2 (potential) mistakes. The right attribute name is update, not udpate. The one on your other button has however the right attribute name.
It that still doesn't work, then the other potential mistake is that the client ID tabView:formSujet:listeUser does not exist in HTML DOM tree (and thus JavaScript/jQuery is unable to find and replace it). That can happen if the <p:tabView> is dynamic (i.e. you're using <p:tabView value="#{bean.tabs}" var="tab">, because it prepents the tab index number in the final client ID like so tabView:0:formSujet:listeUser if it's the 1st tab.
But, after all, as both the dropdownlist and the commandbutton are in the same NamingContainer parent, you don't need an absolute client ID at all. Just the relative client ID should suffice:
update="listeUser"
Fix that on your both buttons.
See also:
How to find out client ID of component for ajax update/render? Cannot find component with expression "foo" referenced from "bar"
I am trying to implement multisort on Primeface datatable. We are using Primefaces v3.5. I have created a new load method in the LazyLoadClass that takes the List of SortMeta> parameter.
But I am having issues in the initial load of the table. The List of SortMeta> is null when the load method is called. I have also tried without specifying the initial sortBy and sortOrder for the datatable. In both the cases the result is the same.
Seeing that we have this new class SortMeta to support multisort, I suspect that the way to specify the initial sort field and order would have also changed. But I couldn't find any example anywhere to point the difference. The manual 3.5 doesn't mention any difference.
Why we could be getting the List of SortMeta> as null? Any pointers on example code where multisort is used with Lazyload?
I was able to get this to work.
Essentially we need to provide the UIColumn in the SortMeta object for it to work. For the initial sort at render time, I had to find the component in my bean and assign that to the sortMeta.
Below is my code in the view xhtml
<p:dataTable id="transDataTable" var="trans"
value="#{myBean.transModel}" paginator="true" rows="50"
paginatorAlwaysVisible="false" lazy="true"
sortMode="multiple" sortBy="#{myBean.preSortOrder}"
resizableColumns="true">
<p:column headerText="User" sortBy="#{trans.user.name}" >
#{trans.user.name}
</p:column>
<p:column headerText="Company" sortBy="#{trans.companyName}">
#{trans.companyName}
</p:column>
<p:column headerText="Join Date" id="joinDateTime"
sortBy="#{trans.joinDateTime}" >
<h:outputText value="#{trans.joinDateTime}" />
</p:column>
</p:dataTable>
Here is my bean code called on #PostConstruct
/*
* method to build initial sort order for multisort
*/
private void buildSortOrder() {
UIViewRoot viewRoot = FacesContext.getCurrentInstance().getViewRoot();
UIComponent column = viewRoot.findComponent("transDataTable:joinDateTime");
SortMeta sm1 = new SortMeta();
sm1.setSortBy((UIColumn)column);
sm1.setSortField("joinDateTime");
sm1.setSortOrder(SortOrder.DESCENDING);
preSortOrder.add(sm1);
}
I am not sure this is the right way to do this, but it works. I am usually uncomfortable when we have to use the ids from view in the bean code, as that can introduce bugs when people are not careful.
Thanks #CagatayCivici for the quick hint.
Ok I have a simple many menu in wich I call a listener
<p:selectManyMenu style="width: 100%;" id="cmbsectores" valueChangeListener="#{mbcompletado.removeItem}">
<f:selectItems value="#{mbcompletado.sectores}"/>
<f:ajax update="#this"/>
</p:selectManyMenu>
I am looking the way I can use the ValueChangeEvent pass as parameter to detect which item was selected??
So I can use my business logic!
Do i need to use ajax tag? I found an itemSelect event in primeface, framework which I am using, but it only works on charts components!
Thanks in advance
Since you are already using PrimeFaces use p:ajax instead of f:ajax. The event is already set to the appropriate event (valueChanged).
To detect the selected values of the selectManyMenu the value attribute is necessary:
<p:selectManyMenu style="width: 100%;" id="cmbsectores"
value="#{mbcompletado.selectedSectores}">
<f:selectItems value="#{mbcompletado.sectores}"/>
<p:ajax/>
</p:selectManyMenu>
You can remove the valueChangeListener listener altogether.
For a more complete example see SelectManyMenu.
EDIT:
In your backing bean mbcompletado.selectedSectores should point to a collection of the same type like your mbcompletado.sectores. For example, if your sectores is a List of TypeA, selectedSectores should be also a List of the same type (TypeA).
Similar backing-bean structure can be found in the following example SelectManyCheckbox.
You need the <f:ajax listener> (or in this case better <p:ajax listener>) method instead. The ValueChangeListener serves an entirely different purpose and should only be used when you're really interested in both the old and new value, not when you're only interested in the new value.
E.g.
<p:selectManyMenu value="#{bean.selectedSectors>
<f:selectItems value="#{bean.availableSectors}"/>
<p:ajax listener="#{bean.selectedSectorsChanged}" />
</p:selectManyMenu>
with
private List<String> selectedSectors;
private List<String> availableSectors;
public void selectedSectorsChanged() {
System.out.println("Selected sectors are: " + selectedSectors); // Look, JSF has already set it.
// ...
}
See also:
When to use valueChangeListener or f:ajax listener?