Apex Code Development You need to sign in to do that
Don't have an account?
shrey.tyagi88@tcs.com Paginate Wrapper Class---Please Help!!!
Hi All ,
I want to paginate a wrapper class such that when i navigate from one page to another the slected records dont get unchecked in previos page.
Code is goven below:
Apex:
public class wrapperClassController {
//Our collection of the class/wrapper objects cContact
public List<cContact> contactList {get; set;}
public List<cContact> getContacts() {
if(contactList == null) {
contactList = new List<cContact>();
for(Contact c: [select Id, Name, Email, Phone from Contact limit 10]) {
// As each contact is processed we create a new cContact object and add it to the contactList
contactList.add(new cContact(c));
}
}
return contactList;
}
public PageReference processSelected() {
List<Contact> selectedContacts = new List<Contact>();
for(cContact cCon: getContacts()) {
if(cCon.selected == true) {
selectedContacts.add(cCon.con);
}
}
for(Contact con: selectedContacts) {
system.debug(con);
}
contactList=null; // we need this line if we performed a write operation because getContacts gets a fresh list now
return null;
}
public class cContact {
public Contact con {get; set;}
public Boolean selected {get; set;}
public cContact(Contact c) {
con = c;
selected = false;
}
}
}
///////////////////////////////////////////////////////vf page////////////////////////////////////////////////////
<apex:page controller="wrapperClassController">
<apex:form >
<apex:pageBlock >
<apex:pageBlockButtons >
<apex:commandButton value="Process Selected" action="{!processSelected}" rerender="table"/>
</apex:pageBlockButtons>
<!-- In our table we are displaying the cContact records -->
<apex:pageBlockTable value="{!contacts}" var="c" id="table">
<apex:column >
<!-- This is our selected Boolean property in our wrapper class -->
<apex:inputCheckbox value="{!c.selected}"/>
</apex:column>
<!-- This is how we access the contact values within our cContact container/wrapper -->
<apex:column value="{!c.con.Name}" />
<apex:column value="{!c.con.Email}" />
<apex:column value="{!c.con.Phone}" />
</apex:pageBlockTable>
</apex:pageBlock>
</apex:form>
20
</apex:page>
I want to paginate a wrapper class such that when i navigate from one page to another the slected records dont get unchecked in previos page.
Code is goven below:
Apex:
public class wrapperClassController {
//Our collection of the class/wrapper objects cContact
public List<cContact> contactList {get; set;}
public List<cContact> getContacts() {
if(contactList == null) {
contactList = new List<cContact>();
for(Contact c: [select Id, Name, Email, Phone from Contact limit 10]) {
// As each contact is processed we create a new cContact object and add it to the contactList
contactList.add(new cContact(c));
}
}
return contactList;
}
public PageReference processSelected() {
List<Contact> selectedContacts = new List<Contact>();
for(cContact cCon: getContacts()) {
if(cCon.selected == true) {
selectedContacts.add(cCon.con);
}
}
for(Contact con: selectedContacts) {
system.debug(con);
}
contactList=null; // we need this line if we performed a write operation because getContacts gets a fresh list now
return null;
}
public class cContact {
public Contact con {get; set;}
public Boolean selected {get; set;}
public cContact(Contact c) {
con = c;
selected = false;
}
}
}
///////////////////////////////////////////////////////vf page////////////////////////////////////////////////////
<apex:page controller="wrapperClassController">
<apex:form >
<apex:pageBlock >
<apex:pageBlockButtons >
<apex:commandButton value="Process Selected" action="{!processSelected}" rerender="table"/>
</apex:pageBlockButtons>
<!-- In our table we are displaying the cContact records -->
<apex:pageBlockTable value="{!contacts}" var="c" id="table">
<apex:column >
<!-- This is our selected Boolean property in our wrapper class -->
<apex:inputCheckbox value="{!c.selected}"/>
</apex:column>
<!-- This is how we access the contact values within our cContact container/wrapper -->
<apex:column value="{!c.con.Name}" />
<apex:column value="{!c.con.Email}" />
<apex:column value="{!c.con.Phone}" />
</apex:pageBlockTable>
</apex:pageBlock>
</apex:form>
20
</apex:page>
I apologize for any typos. I was unable to compile this code.
Glyn Anderson
Sr Developer | System Analyst | ClosedWon | closedwon.com
Certified Developer | Certified Advanced Administrator
Blog: GlynATheApexGuy@blogspot.com
Twitter: @GlynAtClosedWon
public class wrapperClassController
{
private final Integer pageSize = 20; // Number of records per page
// Our collection of the class/wrapper objects cContact
public List<cContact> contactList
{
get
{
if ( contactList == null )
{
contactList = new List<cContact>();
for ( Contact c : [SELECT Id, Name, Email, Phone FROM Contact] )
{ // As each contact is processed we create a new cContact object
// and add it to the contactList
contactList.add( new cContact( c ) );
}
}
return contactList;
}
private set;
}
private Integer pageNumber;
private List<List<cContact>> list_Pages
{
get
{
if ( list_Pages == null )
{
list_Pages = new List<List<cContact>>();
Integer numInPage = pageSize;
List<cContact> thePage;
for ( cContact cCon : contactList )
{
if ( numInPage >= pageSize )
{
thePage = new List<cContact>();
list_Pages.add( thePage );
numInPage = 0;
}
thePage.add( cCon );
numInPage++;
}
}
return list_Pages;
}
private set;
}
public List<cContact> currentPage { get { return list_Pages[ pageNumber ]; } }
public Boolean hasPrevious { get { return pageNumber > 0; } }
public Boolean hasNext { get { return pageNumber < list_Pages.size() - 1; } }
public void previousPage() { if ( hasPrevious ) pageNumber--; }
public void nextPage() { if ( hasNext ) pageNumber++; }
public wrapperClassController()
{
pageNumber = 0;
}
public PageReference processSelected()
{
List<Contact> selectedContacts = new List<Contact>();
for ( cContact cCon : getContacts() )
{
if ( cCon.selected ) selectedContacts.add( cCon.con );
}
for ( Contact con : selectedContacts )
{
system.debug( con );
}
// we need this line if we performed a write operation
// because getContacts gets a fresh list now
contactList = null;
list_Pages = null;
return null;
}
public class cContact
{
public Contact con { get; set; }
public Boolean selected { get; set; }
public cContact( Contact c )
{
con = c;
selected = false;
}
}
}
<apex:page controller="wrapperClassController">
<apex:form >
<apex:pageBlock >
<apex:pageBlockButtons >
<apex:commandButton value="Previous" action="{!previousPage}" rendered="{!hasPrevious}" rerender="table"/>
<apex:commandButton value="Process Selected" action="{!processSelected}" rerender="table"/>
<apex:commandButton value="Next" action="{!nextPage}" rendered="{!hasNext}" rerender="table"/>
</apex:pageBlockButtons>
<!-- In our table we are displaying the cContact records -->
<apex:pageBlockTable value="{!currentPage}" var="c" id="table">
<apex:column >
<!-- This is our selected Boolean property in our wrapper class -->
<apex:inputCheckbox value="{!c.selected}"/>
</apex:column>
<!-- This is how we access the contact values within our cContact container/wrapper -->
<apex:column value="{!c.con.Name}" />
<apex:column value="{!c.con.Email}" />
<apex:column value="{!c.con.Phone}" />
</apex:pageBlockTable>
</apex:pageBlock>
</apex:form>
</apex:page>
</pre>
I tried your code , and its giving following error.
Code:
public class wrapperClassController {
private final Integer pageSize = 20; // Number of records per page
//private final Integer pageNumber=0;
// If i comment the line above i get this error : Variable does not exist: pageNumber at line 50 column 68
// If i dont i get the error given at the end of this post.
public List<cContact> contactList
{
get
{
if ( contactList == null )
{
contactList = new List<cContact>();
for ( Contact c : [select Id, Name, Email, Phone, Contact.Account.Name,Contact.Account.isPersonAccount,Contact.Account.Type from Contact limit 100] )
{
contactList.add( new cContact( c ) );
}
}
return contactList;
}
private set;
}
private List<List<cContact>> list_Pages
{
get
{
if ( list_Pages == null )
{
list_Pages = new List<List<cContact>>();
Integer numInPage = pageSize;
List<cContact> thePage;
for ( cContact cCon : contactList )
{
if ( numInPage >= pageSize )
{
thePage = new List<cContact>();
list_Pages.add( thePage );
numInPage = 0;
}
thePage.add( cCon );
numInPage++;
}
}
return list_Pages;
}
private set;
}
public List<cContact> currentPage { get { return list_Pages[ pageNumber ]; } }
public Boolean hasPrevious { get { return pageNumber > 0; } }
public Boolean hasNext { get { return pageNumber < list_Pages.size() - 1; } }
public void previousPage() { if ( hasPrevious ) pageNumber--; }
public void nextPage() { if ( hasNext ) pageNumber++; }
public wrapperClassController()
{
pageNumber = 0;
}
public PageReference processSelected() {
List<Contact> selectedContacts = new List<Contact>();
Set<Account> selectedAccounts = new Set<Account>();
List<Account> selectedAccountList = new List<Account>();
for(cContact cCon:contactList ) {
if(cCon.selected == true) {
selectedContacts.add(cCon.con);
}
}
update selectedContacts;
contactList=null;
return null;
}
public class cContact {
public Contact con {get; set;}
public Boolean selected {get; set;}
public cContact(Contact c) {
con = c;
selected = false;
}
}
}
Error:
Final variable has already been initialized
Error is in expression '{!nextPage}' in component <apex:commandButton> in page testwrapper
private Integer pageNumber;
I did not write the line,
private final Integer pageNumber=0;
If you put my code back the way it was, it should work. "pageNumber" cannot be "final", because the code changes its value.
-Glyn
Thanks alot for your help. This code works ver well .But I want to integrate this with existing pice of code with some variations that are given below:
I am using Line 006 as a method given below, this is bieng called from some palce:
ContactObjects=[Some soql];
public List<cContact> getContacts() {
if(contactList == null) {
contactList = new List<cContact>();
for(Contact c:ContactObjects ) {
// As each contact is processed we create a new cContact object and add it to the contactList
contactList.add(new cContact(c));
}
}
return contactList;
}
So I want to convert this code into a method as well:
////////////////////////////////////////////////////////////////////////////////////////////
private List<List<cContact>> list_Pages
{
get
{
if ( list_Pages == null )
{
list_Pages = new List<List<cContact>>();
Integer numInPage = pageSize;
List<cContact> thePage;
for ( cContact cCon : contactList )
{
if ( numInPage >= pageSize )
{
thePage = new List<cContact>();
list_Pages.add( thePage );
numInPage = 0;
}
thePage.add( cCon );
numInPage++;
}
}
return list_Pages;
}
private set;
}
public List<cContact> currentPage { get { return list_Pages[ pageNumber ]; } }
Can you please help me with code converion of the above snippet into a method???
Regards
Shrey Tyagi
This is my orginnal code, would be really nice of u could take a look into it.
public class AccountSearchController{
public List<Contact> ContactObjects {get;set;}
public List<Account> AccountObjects {get;set;}
public List<Account> AccountObjectsx {get;set;}
public Account AccObj {get;set;}
public Contact ContactObj {get;set;}
public Integer pagesize;
public String status {get;set;}
public String fname {get;set;}
private String soql {get;set;}
//Our collection of the class/wrapper objects cContact
public List<cContact> contactList {get; set;}
public String Value;
public String AccountSegmentValue;
public String AccountTypeValue;
public String AccountOwnerValue;
public String userid;
public Boolean ParentAccountCheck;
public String recordtypeAccount_sales='012500000009XrX';
public String recordtypeContact_sales='012500000009g1c';
public ApexPages.StandardSetController con{get; set;}
/////Variables related to Pagination of Accounts////
private integer counter=0; //keeps track of the offset
private integer list_size=50; //sets the page size or number of rows
public integer total_size; //used to show user the total size of the list
////////////////////////////////////////////////////
public AccountSearchController(ApexPages.StandardController controller) {
Value='Contact';
ContactObj = new Contact();
AccObj = new Account();
// makes the defalut in the VF page for contact type as 'Main'
ContactObj.Contact_Type__c ='Main';
//pass value for picklist conatct type in query
String slist = 'Main';
// strings to pass defalut value of account segment and contact status and recordtype of account and contact as sales in query
String defaultAccSegemnt= 'Regional';
String defaultConStatus= 'Active';
//list strings to pass account type in query as ('Active','Inactive','New')
List <String> defaultAccType=new List<String>();
String active= '\'Active\'';
String Inactive='\'Inactive\'';
String newkey='\'New\'';
defaultAccType.add(active);
defaultAccType.add(Inactive);
defaultAccType.add(newkey);
system.debug('defaultAccType>>>>>>>>>>>>'+defaultAccType);
//userid = Userinfo.getUserId();
userid='00550000000rgCd';
system.debug('logged in user id>>>>>>>>>>'+ userid);
soql ='SELECT Id,FirstName,LastName,Position__c,Contact.Account.IsPersonAccount,Contact.Account.Other_Address_Street_1__pc,Contact.Account.Phone ,Contact_Master_Policy_Mailing__c,Contact.Account.Type,Contact.Account.PY_Total_Ins_Volume__c,Contact_Type__c ,Phone,Email,Title, Contact.Account.Segment__c,Contact.Account.Parent_Name__c,Contact.Account.Branch_Org__c,Contact.Account.Name FROM Contact ';
runQuery();
}
public PageReference runSearch() {
String status= ContactObj.Contact_Status__c;
String firstName= ContactObj.FirstName;
String segment= AccObj.Segment__c;
String branchOrg= AccObj.Branch_Org__c;
String accName= AccObj.Name;
String accStatus= AccObj.Master_Policy_Status__c ;
String contactType= ContactObj.Contact_Type__c ;
Boolean masterPolicyBoolean=AccObj.Master_Policy__c;
String masterPolicy;
RecordType recordTypeValue= AccObj.RecordType;
String recordType=String.valueof(recordTypeValue);
if(Value == 'Contact'){
soql ='SELECT Id,FirstName,LastName,Contact.Account.IsPersonAccount,Position__c,Contact.Account.Other_Address_Street_1__pc,Contact.Account.Phone,Contact_Master_Policy_Mailing__c,Contact.Account.Type,Contact.Account.PY_Total_Ins_Volume__c,Contact_Type__c ,Phone,Email,Title, Contact.Account.Parent_Name__c,Contact.Account.Segment__c,Contact.Account.Branch_Org__c,Contact.Account.Name FROM Contact WHERE Contact.Account.Name!=null';
soql += ' and Contact.Account.RecordTypeId =\''+String.escapeSingleQuotes(recordtypeAccount_sales)+'\'';
soql += ' and Contact.RecordTypeId = \''+String.escapeSingleQuotes(recordtypeContact_sales)+'\'';
if(AccountOwnerValue!=null && !AccountOwnerValue.equals('') && AccountOwnerValue.equals('My'))
{soql += ' and Account.ownerId = \''+String.escapeSingleQuotes(userid)+'\'';
system.debug('AccountOwnerValue soql -----------------------------'+AccountOwnerValue);
system.debug('soql AccountOwnerValue -----------------------------'+soql );}
}
}
runQuery();
return null;
}
public void runQuery() {
soql+= 'Order By Contact.Account.Name';
ContactObjects =Database.query(soql + ' limit 30');
getContacts();
}
////////////////////////////Code Of Wrapper Class Starts here///////////
public List<cContact> getContacts() {
system.debug('aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa');
//if(contactList == null) {
contactList = new List<cContact>();
for(Contact c:ContactObjects ) {
// As each contact is processed we create a new cContact object and add it to the contactList
contactList.add(new cContact(c));
}
// }
return contactList;
}
// This is our wrapper/container class. A container class is a class, a data structure, or an abstract data type whose instances are collections of other objects. In this example a wrapper class contains both the standard salesforce object Contact and a Boolean value
public class cContact {
public Contact con {get; set;}
public Boolean selected {get; set;}
//This is the contructor method. When we create a new cContact object we pass a Contact that is set to the con property. We also set the selected value to false
public cContact(Contact c) {
con = c;
selected = false;
}
}
public PageReference processSelected() {
//We create a new list of Contacts that we be populated only with Contacts if they are selected
List<Contact> selectedContacts = new List<Contact>();
Set<Account> selectedAccounts = new Set<Account>();
List<Account> selectedAccountList = new List<Account>();
//We will cycle through our list of cContacts and will check to see if the selected property is set to true, if it is we add the Contact to the selectedContacts list
//for(cContact cCon: gatContacts()) {
for(cContact cCon: contactList) {
if(cCon.selected == true) {
selectedContacts.add(cCon.con);
selectedAccounts.add(cCon.con.Account);
}
}
// Now we have our list of selected contacts and can perform any type of logic we want, sending emails, updating a field on the Contact, etc
for(Account acs: selectedAccounts){
selectedAccountList.add(acs);
}
update selectedAccountList;
update selectedContacts;
contactList=null; // we need this line if we performed a write operation because getContacts gets a fresh list now
return null;
}
}
Regards
Shrey Tyagi
If you are still looking for solution. Then Please check below blog :-
http://amitsalesforce.blogspot.in/2014/11/pagination-with-wrapper-class-with.html
Thanks,
Amit Chaudhary