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Chris110Chris110 

How to displayed the trigger of error message

Hello everybody:

I created a trigger, and now there is an exception or error message, but I do not know how to display it on  Visualforce page.

thanks for your help!

trigger SalaryRangeTrigger on JobPosition__c (before insert) 
{
 list<testtable__c> testData;
 
 for(JobPosition__c T: Trigger.new)
 {
  if(t.Salary__c!=null)
  {
   list<Salary__c> salaryId=[select id,maxPay__c,minPay__c,SalaryName__c 
            from Salary__c
            where id=:t.Salary__c];
            for(Salary__c dataId:salaryId)
            {
                if(t.Monthly__c < dataId.minPay__c || t.Monthly__c>dataId.maxPay__c)
                {
     //Trigger.new[0].Monthly__c.addError('not a valid account');
     Trigger.new[0].addError('error messages！');
                }
                testData=new List<testtable__c>();
                testData.add(new testtable__c(minPay__c=dataId.minPay__c,maxPay__c=dataId.maxPay__c,jobId__c=dataId.SalaryName__c));
                insert testData;
            }
  }
 }
}

 

Trigger.new[0].addError('error messages！');

or

t.addError('error message！');t is an object;
how to Display the error on Visualforce

Best Answer chosen by Admin (Salesforce Developers) 
b-Forceb-Force

first add following tag on Page

 

<apex:pageMessages id="errorMessage"></apex:pageMessages>

 

tag on page  , It will show the error that you have added in Trigger.new[0].adderror()

 

if solution works for you please mark as accepted it works for me :)

 

hope this will help you

Thanks,

Bala


 

All Answers

Chris110Chris110

now

I know how to display the error message.

But how to stay on the same page(edit page or add page) when the trigger is running,

not PageReference to a new page.

somebody can help me:

how can  we get the value of  Visualforce  control (messages value)on  apex.

 

 

now

Logic can not determine whether the jump

 

if(ss=='1')
        {
            return null;
        }
        else
        {
            PageReference p=page.postion;
            return p;
        }

 I hope I said that to understand
b-Forceb-Force

first add following tag on Page

 

<apex:pageMessages id="errorMessage"></apex:pageMessages>

 

tag on page  , It will show the error that you have added in Trigger.new[0].adderror()

 

if solution works for you please mark as accepted it works for me :)

 

hope this will help you

Thanks,

Bala


 

This was selected as the best answer
Chris110Chris110

it's work 

thank you very much
CloudPowerCloudPower

Hi,

I have the same issue of displaying error message handled in trigger on VF page.

For this i have added apex page messages tag... still the error is not being displayed on the same page.

The error i am facing is:

System.DmlException: Upsert failed. First exception on row 0 with id 00190000008lusuAAA; first error: FIELD_CUSTOM_VALIDATION_EXCEPTION, Customer ID, Accounting Entity ID , Location ID and In Sync Flag cannot be Modified.: [] 

 

Please let me know if any soln.

 

Thanks!
Venkat1234532Venkat1234532

Hi Bala, Your solution seemes to be not working for me. Is there any other way to display trigger errormessage in visualforce page.