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hector.asp2hector.asp2 

Access saved data for field name stored in a variable

Hi,

 

I have made a trigger and inside that trigger, I need to access saved data value, for field name stored in a string variable.

e.g. Account myAccount = trigger.new[0];

String fieldName = 'Fax';

myAccount.Fax works;

myAccount.fieldName gives error.

 

 

 

 

trigger dsAccountTrigger on Account (after insert) {
    Account myAccount = trigger.new[0];

String query = 'select FieldName__c,MatchType__c from FieldMatchTypeRules__c where ObjectName = \'account\'';
    matches = Database.query(query);     
    
    for(integer i = 0; i < matches.size(); i++)
    {
        String matchType = matches[i].MatchType__c;
        String myFieldScore  = '';

        myFieldScore  = myAccount.Fax;//This works 
        //This does not work
        myFieldScore  = myAccount.matches[i].FieldName__c;
        //How to access field value saved in variable?
    }
}

 

Do I need to have a different approach.

 

Please guide

 

Regards

Hector...

bob_buzzardbob_buzzard

You have to use the get/put notation if you want to access a field based on another variable. 

 

Something like the following should do the trick:

 

 

myFieldScore  = (String) myAccount.matches[i].get(fieldname);

 

 
Pradeep_NavatarPradeep_Navatar

You can use the get and put methods on an object to set or retrieve values for fields using either the API name of the field expressed as a String, or the field's token. In the following example, the API name of the field AccountNumber is used:

 

myFieldScore  = matches[i].get('fieldname');

 

Refer the apex-guide to know more about the dynamic apex concepts.

 

Hope this helps.
hector.asp2hector.asp2

Thanks bob and pradeep,

 

myFieldScore  = (String) myAccount.matches[i].get(fieldname);

I changed it to 
myFieldScore  = (String) myAccount.get(matches[i].fieldName);
and it worked.