I have a JSF data table
<h:dataTable id="memberTable" value="#{bean.pList}" border="0"
rowClasses="rowEven rowOdd" var="item">
<h:column rendered="#{item.isDisplay == Y}">
<h:outputText value="#{item.visitDate}" >
</h:outputText>
</h:column>
</datatable>
I have more such columns that are rendred based on a condition, when the condition is false and if I have the border=1; I see that blank cells are displayed. How can i display only the columns i want and have other ie. rendered=false not display blank cells?
Thanks,
Sai.
You can't render an entire column based on the condition of a particular row. This makes technically no sense. You need to evaluate the condition based on a property of the parent bean.
<h:dataTable value="#{bean.pList}" var="item">
<h:column rendered="#{bean.display == 'Y'}">
<h:outputText value="#{item.visitDate}" />
</h:column>
</datatable>
Move the public String getDisplay() method to the class behind #{bean}.
Note that I also fixed some other mistakes in your EL expression. You shouldn't prefix the property name with is or get and you should quote string values. You can also better make it a boolean property.
private boolean display;
public boolean isDisplay() {
return display;
}
with
rendered="#{bean.display}"
Related
I am trying to filter my primefaces datatable by a boolean column using a checkbox filter but unfortunately filtering in primefaces datatable seems it does not work with any type other than String, but there should be a workaround for this case.
datatable column
<p:column headerText="A_boolean_column" filterBy="#{myBean.myBoolean}" filterMatchMode="exact">
<f:facet name="filter">
<p:selectCheckboxMenu label="BooleanFilter" onchange="PF('mydatatable').filter()" styleClass="custom-filter">
<f:selectItems value="#{myBean.possibleAnswers}" />
<p:ajax update="#form" oncomplete="PF('mydatatable').filter();"/>
</p:selectCheckboxMenu>
</f:facet>
<h:outputText value="#{myBean.myBoolean}"/>
</p:column>
where possibleAnswers variable is a list that has been initialized on init method of myBean with true && false values
#PostConstruct
public void init(){
this.possibleAnswers= new ArrayList<>();
possibleAnswers.add(true);
possibleAnswers.add(false);
}
I have similar working examples in my datatable with text values and are working perfectly. Of course I could do a workaround to fix my issue by converting the values from boolean ( true / false) into String ("true" / "false") ( or even write a custom function to check for equality)but I don't really like this solution and I would prefer any other out of the box solution ( perhaps a different filterMatchMode ? ).
I am using primefaces 7.0
Normally an input component has a 'value' attribute that is bound to a field (getter/setter) in a backing bean. The type of this field can be used to automatically convert the technical string of the http request to the correct java type. For a datatable filter this cannot be automatically done since there is no value attribute. Giving all components knowledge about all possible containers they can be used in is bad design. So the only and corrrect solution is to use an explicit converter.
Have a Look at the Implementation of the Status-Column in the PrimeFaces datatable filter showcase, as far as I see it it is exactly what you need
for Reference:
<p:column filterBy="#{myBean.myBoolean}" filterMatchMode="in">
<f:facet name="filter">
<p:selectCheckboxMenu label="BooleanFilter"
onchange="PF('mydatatable').filter()" styleClass="custom-filter">
<f:converter converterId="javax.faces.Boolean" />
<f:selectItems value="#{myBean.possibleAnswers}" />
<p:ajax update="#form" oncomplete="PF('mydatatable').filter();"/>
</p:selectCheckboxMenu>
</f:facet>
</p:column>
I have a question based in the following situation.
I have a backing bean that create a matrix with ints, in rows, columns and cells (tablaBean). I have no problem displaying it in a jsf view. Each one of those ints, it´s an ID of differents objects. How can I do, if I want to show in my JSF view, instead of ints, some attributes of the objects?
This is my dataTable:
<p:dataTable var="rowName" value="#{tablaBean.rowNames}" rowIndexVar="rowIdx">
<p:column headerText="Alumnos:">
<h:outputText value="#{rowName}"/>
</p:column>
<p:columns var="colName" value="#{tablaBean.colNames}"
headerText="#{colName}" columnIndexVar="colIdx">
<p:panel>
<h:outputText value="#{tablaBean.data2D[rowIdx][colIdx]}"/>
</p:panel>
</p:columns>
</p:dataTable>
So for example:
tablaBean.data2D[1][1]=3
But I don´t want to show the number "3" in my view.
I want to take that number and show the Person.name of my object Person.id=3;
Hope my question is clear enough.
Create in your backing bean method returning person name:
public String getPersonNameById(int idPerson) {
return myDao.findPersonById(idPerson).getName();
}
Use it in xhtml:
<h:outputText value="#{tableBean.getPersonNameById(tablaBean.data2D[rowIdx][colIdx])}"/>
I'm having trouble making a dataTable where each row has a inputText and a commandLink. When the link is clicked, only it's row's inputText's data is submitted.
Something like this?
<h:dataTable value="#{bean.items}" var="item">
<h:column>
<h:inputText value="#{bean.value}"/>
</h:column>
<h:column>
<h:commandLink action="#{bean.save}" value="save">
<f:setPropertyActionListener target="#{bean.item}" value="#{item}" />
</h:commandLink>
</h:column>
</h:dataTable>
Bean:
#RequestScoped
public class Bean {
private Item item;
private String value;
Right now, as it is, it's using the last row's inputText to fill the value. I wrapped another h:form, but it broke other things and I've learned that nested h:form is not the right way to do it hehe
What's the correct way to do this?
Thanks.
You're binding the value of all HTML input elements to one and same bean property. This is of course not going to work if all those HTML input elements are inside the same form. All values are subsequently set on the very same property in the order as the inputs appeared in the form. That's why you end up with the last value. You'd like to move that form to inside the <h:column> (move; thus don't add/nest another one).
The usual approach, however, would be to just bind the input field to the iterated object.
<h:inputText value="#{item.value}"/>
An alternative, if you really need to have your form around the table, is to have a Map<K, V> as bean property where K represents the type of the unique identifier of the object behind #{item} and V represents the type of value. Let's assume that it's Long and String:
private Map<Long, String> transferredValues = new HashMap<Long, String>();
// +getter (no setter necessary)
with
<h:inputText ... value="#{bean.values[item.id]}" />
This way you can get it in the action method as follows:
String value = values.get(item.getId());
By the way, if you happen to target Servlet 3.0 containers which supports EL 2.2 (Tomcat 7, Glassfish 3, etc), then you can also just pass the #{req} as a method argument without the need for a <f:setPropertyActionListener>.
<h:commandLink ... action="#{bean.save(item)}" />
See also:
How and when should I load the model from database for h:dataTable
How can I pass selected row to commandLink inside dataTable?
How to dynamically add JSF components
How can i set row level rendering in datatable JSF.
<h:dataTable styleClass="tablesub" border="0" value="#{historyQuestBean.answerMasterList[row].inputTextKeySet}" var="option">
<h:column>
<h:outputText value="#{option.sectionShortName}:"/>
</h:column>
<h:column>
<h:outputText value="#{option.type}:"/>
</h:column>
</h:dataTable>
I want to render only those rows who have status true.
How can I do this?
Easier and Simplest thing is to pass the list of values with status = true
In <h:datatable> you can give a style class within rowClasses say renderer and in that class specify a condition like display:#{option.status==true}?'block':'none'. This will evaluate the EL and accordingly place the style of that <tr\> to display or not.
Another option is to use <ui:repeat> instead of <h:datatable>, Here you can place rendered condition for the <tr>.
In a scrollable datatable, which displays a collection of objects , I have to add one manual row as first row. That row contains inputText, through which user can able to enter some values and while hitting enter, those values will save and displays in bottom rows. I couldnt able to add this manual row as first row. Below is the current code.
<rich:scrollableDataTable value="{resultList}" var="result">
<rich:column>
<f:facet name="header">Name</f:facet>
<h:outputText value="#{result.name}" />
</rich:column>
<rich:column>
<f:facet name="header">Category</f:facet>
<h:outputText value="#{result.category}" />
</rich:column>
</rich:scrollableDataTable>
The above code is for just displaying the values from the backend.
1) For that you have to use bind rich:scrollableDataTable with the instance of HtmlScrollableDataTable in the backing bean.
In backing bean, create instance of it with accessor methods & then you can initialize it accordingly by adding the inputText components. Add actionListeners to these input components & then in listeners, you can add these inputText values as outputText to the table again as rows accordingly.
2) Else you can use inputText rather then outputText & disabling the subsequent rows other then 1st, so only data may get displayed - preventing input.
<rich:scrollableDataTable value="{resultList}" var="result">
<rich:column>
<f:facet name="header">Name</f:facet>
<h:inputText value="#{result.name}" disabled ="#{!result.isFirstRow}"/>
</rich:column>
<rich:column>
<f:facet name="header">Category</f:facet>
<h:inputText value="#{result.category}" disabled ="#{!result.isFirstRow}"/>
</rich:column>
</rich:scrollableDataTable>
Backing Bean :
//---
public void initialize(){
resultList.add(new Result("", "", true)); // Setting 1st input row enabled
}
public void inputListener(ActionEvent event){
// appending object based on input to the resultList
resultList.add(new Result(inputName, inputValue, false));
// added a boolean field to identify rows added later & to make them enable/disable accordingly
}
//---
I am not familiar with Richfaces, but tried to achieve it, as I was doing it with IceFaces.