public with sharing class Apparel_PageController {

    public List<Trendsters_Order__c> orders{get;set;}
    public String contactId{get;set;}
    public Case objCase{get;set;}

    public Decimal totalAmount{get;set;}
    public Decimal cartSize{get;set;}
    public String currentProductId{get;set;}

    public List<Trendsterz_Inventory__c> inventries {get;set;}

    public List<Trendsters_Order__c> cart{get;set;}

    public Apparel_PageController(){
        totalAmount = 0;
        cartSize = 0;
        cart = new List<Trendsters_Order__c>();
        User objUser = [select ContactId 
                        from User 
                        where Id = :UserInfo.getUserId()];
        contactId = objUser.ContactId;
        //contactId = '0037F00000a8HVg';
        objCase = new Case(ContactId=contactId);

        inventries = [select Id,Brand__c, Designer_Name__c, Design_Name__c, Price__c,Image_Url__c
                      from Trendsterz_Inventory__c 
                      LIMIT 10];    

    public void fetchOrders(){

        orders = [SELECT Id,Name,Brand__c,Contact__c,Contact__r.Name, Contact__r.Email, 
                  FROM Trendsters_Order__c 
                  WHERE Contact__c = :contactId];


    public void submitFeedback(){
        insert objCase;

    public void addToCart(){        
        for(Trendsterz_Inventory__c inventry : inventries){
            if(currentProductId !=null && inventry.Id == currentProductId){
                Trendsters_Order__c order = new Trendsters_Order__c();
                system.debug('contactid -->'+contactId);
                order.Contact__c = contactId;
                order.Design_Name__c = inventry.Design_Name__c;
                order.Price__c= inventry.Price__c;
        cartSize = cart.size();
       // totalAmount = cart.size();
    public void payProduct(){
              system.debug('cart -> ' + cart.size());
        insert cart;

  • Error is preity clear. Contact is required and blank. Are you facing any challenge. May 12 '18 at 7:58
  • In my system debug....it is fetching Contact ID.... May 12 '18 at 8:06
  • After sometime it showed success.....it was happening yesterday also.....it failed and then after sometime automatically it got success May 12 '18 at 8:10
  • You are getting ContactId always. May 12 '18 at 8:22
  • M really new on this....it's just been 1 week that I have started working on salesforce.....can u please explain...what could the error be?.....coz exactly as u said Contact Id is getting fetched...but then y Required field Missing error is coming? May 12 '18 at 8:28

One possibility to consider is that you are checking the code using different logins (users).

The User.ContactId is populated for user's that have setup their login via Self-Registration for Your Community because that mechanism starts from a Contact and hooks up a User to that Contact. But it is not populated for users that have a standard login created by a System Administrator.

If that is the case, your page should just output a message such as "Only community users can use this page". Or the page logic should be otherwise reconsidered for that case.

  • Thanku so much....but it is from a registered user. May 12 '18 at 10:30
  • @SaniyaVirmani Ah OK. One other thing to check is that there are no triggers or workflows on Trendsters_Order__c that are resetting the ContactId.
    – Keith C
    May 12 '18 at 10:32
  • nop....@Keith C....there are no triggers and workflows May 12 '18 at 11:04
  • @KeithC Hi there! I've had this issue where I get the required field missing error on a specific field on a custom object. This field was deployed as a required field but was changes to not being required after a day. However, we're still getting this error once in a while on new records being inserted. I haven't been able to find out why this is happening. Please help if you have ideas as to what may be causing this. Thanks!
    – Bahman.A
    Sep 17 '20 at 20:10

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