Extend the RequiredRule Class

[sumitjain7]

I want to change the validate(value:String) method in RequiredRule.swift class.
It should first trim all whitespaces then should check for isEmpty.

For this I want to create a String class extension like this:

extension String
{
    func trim()->String
    {
        return self.stringByTrimmingCharactersInSet(NSCharacterSet.whitespaceCharacterSet());
    }
}

and then change the validate method like this:

public func validate(value: String) -> Bool { return !(value.trim().isEmpty) }

Suggest me how to do this.

[dimohamdy]

@sumitjain7 you should change validationText in in Validatable.swift

extension UITextView: Validatable {
    
    public var validationText: String {
        
        if let text = text {
            text.trim()
        }
        return ""
    }
}