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cedg Error: Unknown property in VFpage with custom controller
I'm becoming mad with this error. I checked the similar post . In those i see the error and in my code i don't see anything wrong.
Error is : Error: Unknown property 'CO01_RegSport_Data.RegistrationChild.indexChild'
The VF page is :
<apex:pageBlockTable value="{!data.regChildren}" var="child">
<apex:column >
<apex:facet name="header">number</apex:facet>
<apex:outputText value="{!child.indexChild}" />
</apex:column>
<apex:column >
<apex:facet name="header">{!labels.FirstName__c}</apex:facet>
<apex:inputField value="{!child.reg.Firstname__c}" />
</apex:column>
</apex:pageBlockTable>{!child.reg.Firstname__c} is working fine, but not {!child.indexChild}
and the controller is :
public class CO01_RegSport_Data{
private Registration__c regMain;
private List<RegistrationChild> regChildren;
public CO01_RegSport_Data(String userId, CO01_RegSport mainclass){
...
}
public Registration__c getRegMain(){return regMain;}
public List<RegistrationChild> getRegChildren(){return regChildren;}
public PageReference addRegistrationChild(){
if (regChildren == null) regChildren = new List<RegistrationChild>();
regChildren.add(new RegistrationChild(regMain, 'Child', this, empl, regChildren.size()+1));
return null;
}
public class RegistrationChild{
private Registration__c reg;
private Registration__c regParent;
private CO01_RegSport_Data data;
private Employee__c empl;
private Integer indexChild;
public RegistrationChild(Registration__c regParent, String relation, CO01_RegSport_Data data, Employee__c empl, Integer indexChild){
reg = new Registration__c();
...
this.indexChild = Integer.valueOf(indexChild);
}
public Integer getIndexChild(){return indexChild;}
public Registration__c getReg(){return reg;}
}
}
Please help me. Tnx in advance.
From your sample code I created a Registration__c custom object with field Firstname__c, 2 classes and a VF page and it compiles fine. I run the page [salesforce.com/apex/RegSport] and I see a '1' and the name 'Bill' in a table.
[Note: I had to remove references to Employee__c since theres no clue as to what it is, and I initialised regChildren with 1 row]
VF page
<apex:page controller="CO01_RegSport"> <apex:form> <apex:pageBlock> <apex:pageBlockTable value="{!data.regChildren}" var="child"> <apex:column > <apex:facet name="header">number</apex:facet> <apex:outputText value="{!child.indexChild}" /> </apex:column> <apex:column > <apex:facet name="header">First Name</apex:facet> <apex:inputField value="{!child.reg.Firstname__c}" /> </apex:column> </apex:pageBlockTable> </apex:pageBlock> </apex:form> </apex:page>Class
public class CO01_RegSport_Data{
private Registration__c regMain;
private List<RegistrationChild> regChildren;
public CO01_RegSport_Data(CO01_RegSport mainclass){
// ...
regMain = new Registration__c(Firstname__c='Colin');
addRegistrationChild();
}
public Registration__c getRegMain(){return regMain;}
public List<RegistrationChild> getRegChildren(){return regChildren;}
public PageReference addRegistrationChild(){
if (regChildren == null) regChildren = new List<RegistrationChild>();
regChildren.add(new RegistrationChild(regMain, 'Child', this, regChildren.size()+1));
return null;
}
public class RegistrationChild{
private Registration__c reg;
private Registration__c regParent;
private CO01_RegSport_Data data;
private Integer indexChild;
public RegistrationChild(Registration__c regParent, String relation, CO01_RegSport_Data data, Integer indexChild){
reg = new Registration__c(Firstname__c='Bill');
// ...
this.indexChild = Integer.valueOf(indexChild);
}
public Integer getIndexChild(){return indexChild;}
public Registration__c getReg(){return reg;}
}
}
Class
public class CO01_RegSport{ public CO01_RegSport_Data data {get; set;} // ... public CO01_RegSport(){ // ... regSportInit(); } public void regSportInit() {//separate function only because otherwize it cannot be tested (ApexPages.currentPage() not available in test function) // ... data = new CO01_RegSport_Data(this); // ... } }All Answers
What does data refer to in this line ? Could you remove it ? {!regChildren} would work I think (from your code snippet).
<apex:pageBlockTable value="{!data.regChildren}" var="child">sorry, i forgot to mention :
the real controller is the class CO01_RegSport which instantiates the class CO01_RegSport_Data
public class CO01_RegSport{ private CO01_RegSport_Data data; ... public CO01_RegSport(){ ... regSportInit(); } public void regSportInit() {//separate function only because otherwize it cannot be tested (ApexPages.currentPage() not available in test function) ... data = new CO01_RegSport_Data(emplid, this); ... } }so, {!data....} shouldn't be the problem as i use it for all other fields.
If you comment out that first visualforce column does it give a similar error about Firstname__c ?
I'm wondering if its a visibility issue with the inner class.
if i comment the first column, i've no error, it's working fine but i need this index.
In fact the original problem is i would like to know the index of a each row of the table so as to use in some JS.
So i put the indexChild as a property buty i can't reach it while i can reach the other properties.
perhaps try this approach
public Integer counter { get; set; }or would this work for you:
http://blog.jeffdouglas.com/2010/04/02/visualforce-row-counter-for-iteration-components/
I checked the example of Jeff Douglas and i think it's the same.
his class "DataTableWrapper" corresponds to my class "RegistrationChild"
his "counter" is my "indexChild"
a stupid question : i replaced
private Registration__c reg; public Registration__c getReg(){return reg;}by
private Registration__c reg{get;set;}and now i've error in the class CO01_RegSport when calling data.someitem.getReg().Lastname__c (Method does not exist or incorrect signature:)
I'm new in Apex dev, but it's the same isn't it ???
It might need to be public, not private.
I think you'll need to recompile (save) both classes.
From your sample code I created a Registration__c custom object with field Firstname__c, 2 classes and a VF page and it compiles fine. I run the page [salesforce.com/apex/RegSport] and I see a '1' and the name 'Bill' in a table.
[Note: I had to remove references to Employee__c since theres no clue as to what it is, and I initialised regChildren with 1 row]
VF page
<apex:page controller="CO01_RegSport"> <apex:form> <apex:pageBlock> <apex:pageBlockTable value="{!data.regChildren}" var="child"> <apex:column > <apex:facet name="header">number</apex:facet> <apex:outputText value="{!child.indexChild}" /> </apex:column> <apex:column > <apex:facet name="header">First Name</apex:facet> <apex:inputField value="{!child.reg.Firstname__c}" /> </apex:column> </apex:pageBlockTable> </apex:pageBlock> </apex:form> </apex:page>Class
public class CO01_RegSport_Data{
private Registration__c regMain;
private List<RegistrationChild> regChildren;
public CO01_RegSport_Data(CO01_RegSport mainclass){
// ...
regMain = new Registration__c(Firstname__c='Colin');
addRegistrationChild();
}
public Registration__c getRegMain(){return regMain;}
public List<RegistrationChild> getRegChildren(){return regChildren;}
public PageReference addRegistrationChild(){
if (regChildren == null) regChildren = new List<RegistrationChild>();
regChildren.add(new RegistrationChild(regMain, 'Child', this, regChildren.size()+1));
return null;
}
public class RegistrationChild{
private Registration__c reg;
private Registration__c regParent;
private CO01_RegSport_Data data;
private Integer indexChild;
public RegistrationChild(Registration__c regParent, String relation, CO01_RegSport_Data data, Integer indexChild){
reg = new Registration__c(Firstname__c='Bill');
// ...
this.indexChild = Integer.valueOf(indexChild);
}
public Integer getIndexChild(){return indexChild;}
public Registration__c getReg(){return reg;}
}
}
Class
public class CO01_RegSport{ public CO01_RegSport_Data data {get; set;} // ... public CO01_RegSport(){ // ... regSportInit(); } public void regSportInit() {//separate function only because otherwize it cannot be tested (ApexPages.currentPage() not available in test function) // ... data = new CO01_RegSport_Data(this); // ... } }indeed , by deploying with Eclipse,it's working. I was changing directly in salesforce ...
Thanks for your help and your time, Colin