Making a Field Read Only after Initial Submission - EL Expression

Summary

Making Religion Field Available to employee as a part of ESS but once filled, it should be made non-editable or locked.

Content

Navigation: 

ESS: 

Me -> Personal Information -> Edit -> Biographical Information 

Once Ethnicity and Religion values are filled by the employee, fields should be locked in or kept in read-only (noneditable) mode. 

Reason: Legal Reports are pulled from these fields which cause incorrect output if an employee changes their Ethnicity/Religion values

 

Tried EL Expressions till date:

• #{bindings.TransientReligion.inputValue != null ? true : false}
• #{pageFlowScope.TransientReligion.inputValue == 'Protestant' ? true : false}
• #{bindings.TransientReligion.inputValue == 'Protestant' ? true : false}
• #{securityContext.religion== 'Protestant'? true : false}