This question already has answers here:
How can I pass selected row to commandLink inside dataTable or ui:repeat?
(4 answers)
Closed 6 years ago.
How can i get Id of current Row p:dataTable primefaces to my link where is used this Id? Describe it (sorry for my English). My dataTable looks like on this picture:
http://www.image-share.com/igif-2333-105.html
When i click the button i want to get Id of row where is this button, for example row 1 have id 1, so when button 1 is clicked i must get ID = 1. Show how looks my link where need id:
http://'serverAddress'/myApplication/PDF?type=document&id="+id"
Variable id have type int and getters, setters in entity and bean. Button in JSF looks like below:
h:commandButton value="Print" action="#{printBean.print()}"/>
Method 'Print' initiate my link. Any ideas how to do this? Thanks for help.
You can use p:dataTable's rowIndexVar attribute.
Name of the iterator to refer each row index
Whose iterator name can be used in EL to get the Row Id
For Example:
if rowIndexVar="myId" then you can access each row Index using that iterator name in EL using #{myID}.
Example:
<p:dataTable rowIndexVar="rowId" value="..." var="...">
<p:column>
<h:commandLink action="#{...}">
<f:param name="id" value="#{rowId}" />
</h:commandLink>
</p:column>
</p:dataTable>
Get id in bean
map<String,String> par_map = new HashMap<String,String>(); par_map=FacesContext.getCurrentInstance().getExternalContext().getRequestParameterMap();
String id=par_map.get("id");
Related
This question already has answers here:
How can I pass selected row to commandLink inside dataTable or ui:repeat?
(4 answers)
Closed 6 years ago.
Basically what I have is a list called "mep", I display its values with commandlink and all i want is once you select a link to assign its value to my bean property "selectMep", the display part works pretty well and I'm struggling with the assignment part as I get an error which says that a String (the type of my bean property) cannot be casted to a UIcomponent, here's my code:
<ui:repeat var="mep" value="#{helloBean.mep}" >
<tr>
<td>#{mep}</td>
<h:commandLink value = "#{mep}" action="" binding="#{helloBean.selectMep}"/>
</tr> <br></br>
</ui:repeat>
Any suggestions?
I would suggest to use the action of the commandLink, like this:
<h:commandLink value="#{mep}" action="#{helloBean.selectMep(mep)}" />
And add a new method to your bean:
public void selectMep(String val) {
System.out.println(val);
}
JSF-2.0, Mojarra 2.1.19, PrimeFaces 3.4.1
Summary of the problem: Have a p:inputText inside p:dataTable and inputText action fired by p:remoteCommand which passes the dataTable row index as a parameter with f:setPropertyActionListener. But it always passes the last row of the dataTable, not the index of the row which includes currently clicked p:inputText.
As it can be seen from my previous questions, I am trying to use p:inputText as a comment taker for a status like in Facebook or etc. Implementation includes a p:dataTable. It's rows represents each status. Seems like:
<p:dataTable id="dataTable" value="#{statusBean.statusList}" var="status"
rowIndexVar="indexStatusList">
<p:column>
<p:panel id="statusRepeatPanel">
<p:remoteCommand name="test" action="#{statusBean.insertComment}"
update="statusRepeatPanel">
<f:setPropertyActionListener
target="#{statusBean.indexStatusList}"
value="#{indexStatusList}">
</f:setPropertyActionListener>
</p:remoteCommand>
<p:inputText id="commentInput" value="#{statusBean.newComment}"
onkeypress="if (event.keyCode == 13) { test(); return false; }">
</p:inputText>
</p:panel>
</p:column>
</p:dataTable>
Upper code says when the press enter key, fire p:remoteCommand which calls the insert method of the managed bean.
#ManagedBean
#ViewScoped
public class StatusBean {
List<Status> statusList = new ArrayList<Status>();
public int indexStatusList;
public String newComment
//getters and setters
public void insertComment() {
long statusID = findStatusID(statusList.get(indexStatusList));
statusDao.insert(this.newComment,statusID)
}
Let's debug together; assuming there are three statuses shown in the p:dataTable, click in the p:inputText which in the second status(index of 1), type "relax" and press the enter key.
In the debug console, it correctly shows "relax", but it finds the wrong status because indexStatusList has the value of 2 which belongs the last status in the p:statusList. It must be 1 which is the index of p:inputText that clicked on the dataTable row.
I think problem is about p:remoteCommand which takes the last index on the screen.
How it works?
Let's imagine there is a p:commandLink instead of p:remoteCommand and p:inputText:
<p:commandLink action=#{statusBean.insertComment>
<f:setPropertyActionListener target="#{statusBean.indexStatusList}"
value="#{indexStatusList}"></f:setPropertyActionListener>
This component successfully passes the indexStatusList as currently clicked one.
Conceptual problem in this solution lies in way how p:remoteCommand works. It creates JavaScript function whose name is defined in name attribute of p:remoteCommand. As you putted this in dataTable it will iterate and create JavaScript function called test as many times as there is rows in this table, and at the end last one will be only one. So, solution can be in appending index at the name of the remoteCommand but that is bad, because you will have many unnecessary JavaScript functions. Better approach would be to create one function an pass argument to it. So define remoteCommand outside of datatable:
<p:remoteCommand name="test" action="#{statusBean.insertComment}" update="statusRepeatPanel">
and call test function like this in your onkeypress event:
test([{ name: 'rowNumber', value: #{indexStatusList} }])
This will pass rowNumber parameter in your AJAX request. In backing bean's insertComment() method you can read this parameter and do with it anything you want:
FacesContext context = FacesContext.getCurrentInstance();
Map map = context.getExternalContext().getRequestParameterMap();
Integer rowNumber = Integer.parseInt(map.get("rowNumber").toString());
NOTE: as you are updating panel in each row, maybe you can change update attribute of remoteCommand to #parent so this will work for all rows.
EDIT: You can update the specific panel in specific row with following code in Java method:
RequestContext.getCurrentinstance().update("form:dataTable:" + rowNumber + ":statusRepeatPanel")
I have data table like below:
<p:dataTable id="transactionTableID" binding="#{transactionReportBean.dataTable}"
value="#{transactionReportBean.summarizedDateWiseTransactionList}"
var="transacVAR" rowKey="#{transacVAR.OID}" style="float:center;">
<p:column headerText="#{build.reportSelection}">
<p:selectOneMenu id="" value="#{transactionReportBean.summaryTxnReportSelected}" >
<f:selectItem itemLabel="-Select One-" itemValue="-Select One-"/>
<f:selectItem itemLabel="#{build.matchedreport}" itemValue="#{build.matchedreport}"/>
<f:selectItem itemLabel="#{build.carryforwardreport}" itemValue="#{build.carryforwardreport}"/>
<f:selectItem itemLabel="#{build.exceptionreport}" itemValue="#{build.exceptionreport}"/>
</p:selectOneMenu>
<p:commandButton update="#form" value="Generate" ajax="false"
actionListener="#{transactionReportBean.getReportSelected}" />
</p:column>
</p:dataTable>
And an action listener method like below:
public void getReportSelected(){
if(this.SummaryTxnReportSelected.equalsIgnoreCase("-Select One-")||this.SummaryTxnReportSelected.equalsIgnoreCase(null)){
this.message = AlgoMessageHandler.getMessage(AlgoMessageHandler.USER_MSG, "ERR0048");
FacesContext.getCurrentInstance().addMessage(null, new FacesMessage(FacesMessage.SEVERITY_ERROR,
this.getMessage(), AFTSConstants.BLANK_STRING));
} else {
this.selectedDtTxn= (TransactionsSummaryReportVO) dataTable.getRowData();
System.out.println("listener called "+this.getSummaryTxnReportSelected()+" Selected transaction ID "+selectedDtTxn.getExecutionID());
String reportname = generateJasperReport(this.getSummaryTxnReportSelected(),AFTSConstants.SUMMARY_TXN_REPORT,this.selectedDtTxn);
System.out.println("Report Name"+reportname);
this.summaryReportStored= AFTSConstants.SUMMARY_REPORT_STORED_PATH+reportname+".pdf";
System.out.println(this.summaryReportStored);
this.setRenderGenerateButton(false);
}
}
That method is about to generate report based on the dropdown item we are selecting. In my table I have 10 rows, each row contains one dropdown having 3 items. There is a "generate" button. After selection of dropdown items and clicking the "generate" button, for first 9 rows it doesn't give component IDs and for 10th row it's working.
Here the problem is not about generating report, the problem is JSF doesn't take different component IDs for each dropdown in each row. I tried id="reportID", but no success. I tried to give row key value of table rowKey="#{transacVAR.OID}" as id="#{transacVAR.OID}", but it throws an exception like "empty component id".
How am I supposed to solve this problem?
Your problem has nothing to do with component IDs. Your problem is caused because you're binding submitted values of all rows to one and same bean property. JSF processes the submitted values based on the order the input elements appear in the tree. So, JSF will call the very same setter method with the submitted value for every single row until the last row is reached. You end up with the value of the last row. If you have placed a breakpoint on the setter method, you'd have noticed that it's subsequently been called with different values from every individual row.
You need to bind the value to the currently iterated row object instead.
<p:selectOneMenu value="#{transacVAR.summaryTxnReportSelected}">
I have a bean with 5 properties.In which user has to enter the values and save the values.The saved values are displayed in a datatable by ajax functionality.It is working fine.The problem is when i want to edit the record, i have the edit button associated with every row of the table.When edit button is clicked i have to get the record and show the record in editable format above the datatable.What component i have to use to populate the data for editing ? Edit button is also an ajax request.I used panelGrid for that but i did not get them.
could you suggest the right way to solve this one.
Thank you all.........
Use the same datatable for editing.
If you click edit button, store the selected value or index in the backing bean and
render an output component like h:outputText if rowValue != selectedItem
render an input component like h:inputText if rowValue == selectedItem
in your dataTable.
Here is an example:
<h:dataTable value="#{myBean.itemList}" var="item">
<h:column>
<h:outputText value="#{item.someValue}"
rendered="#{item != selectedItem}"/>
<h:inputText value="#{item.someValue}"
rendered="#{item == selectedItem}" />
</h:column>
</h:dataTable>
I would like your comments and suggestion on this. I am doing the pagination for a page in jsf. The datatable is bound to a Backing Bean property through the "binding" attribute. I have 2 boolean variables to determine whether to render 'Prev' and 'Next' Button - which is displayed below the datatable. When either the 'Prev' or 'Next' button is clicked, In the backing bean I get the bound dataTable property and through which i get the "first" and "rows" attribute of the datatable and change accordingly. I display 5 rows in the page. Please comment and suggest if there any better ways. btw, I am not interested in any JSF Component libraries but stick to only core html render kit.
public String goNext()
{
UIData htdbl = getBrowseResultsHTMLDataTable1();
setShowPrev(true);
//set Rows "0" or "5"
if(getDisplayResults().size() - (htdbl.getFirst() +5)>5 )
{
htdbl.setRows(5);//display 5 rows
}else if (getDisplayResults().size() - (htdbl.getFirst() +5)<=5) {
htdbl.setRows(0);//display all rows (which are less than 5)
setShowNext(false);
}
//set First
htdbl.setFirst(htdbl.getFirst()+5);
return "success";
}
public String goPrev()
{
setShowNext(true);
UIData htdbl = getBrowseResultsHTMLDataTable1();
//set First
htdbl.setFirst(htdbl.getFirst()-5);
if(htdbl.getFirst()==0)
{
setShowPrev(false);
}
//set Rows - always display 5
htdbl.setRows(5);//display 5 rows
return "success";
}
Please comment and suggest if there any better ways.
Well, that gives not much to answer on. It's at least not the way "I" would do, if you're asking for that. Long story short: Effective datatable paging and sorting. You only need Tomahawk (face it, it has its advantages). But if you're already on JSF2+Facelets instead of JSF1+JSP, then you can in fact also use ui:repeat and #ViewScoped instead of t:dataList and t:saveState.
We can use 'Repeat' component - this is similar to dataList or dataTable component in Primefaces
<p:repeat id="repeatComponent" var="education" value="#{backingBean.educationList}" emptyMessage="No records found">
<h:panelGroup>
<p:outputLabel for="center" value="Education Center:" />
<br />
<h:panelGroup>
<h:outputText id="center" value="#{education.centerName}">
</h:outputText>
</h:panelGroup>
</h:panelGroup>
</p:repeat>
This is similar to for loop in java
var - this act as loop iterator
value - takes list object
emptyMessage - takes String value, will get displayed when passed list object is empty