# Where to define common methods on a row?

1. To define commonly used methods on a row, extend the row using the keyword extend on a collection in .kmongo.

   For example:

    

   
   
   
   
   

   collection Employee extend {
   	property name:String
   	...
   }
   

2. run command compile

3. define the methods in the generated RowExtn class

   
   
   
   
   

    

   
   
   

   trait EmployeeRowExtn extends EmployeeRowExtnTrait {
     row: EmployeeRow =>
     override lazy val age: Int = { ... }
     
     def isSenior:Boolean = row.designation == "Manager"
   }