Question

I am new to grails, and I am having a problem on how to write the proper constraints of one of the properties of my class. I want to check if the input contains a space (‘ ‘). Here is my code..

static constraints = {    

username nullable: false, blank: false, minSize: 6, matches: /[A-za-z0-9_]{6,}/, validator: { 
           Account.countByUsername(it) < 1  
        }

Please help me.

Thanks!

Answer 1

You would want to use a custom validator like:

username validator: { val -> if (val.contains(' ')) return 'value.hasASpace' }

Edit: As R. Valbuena pointed out, you would need to change your countByUsername() validator to a unique: true.