src/Database/Schemas/MysqlSchema.php
public function affect($value)
    {
        $i = Collection::count(self::$colmuns) - 1;
        self::$colmuns[$i] .= " default '".$value."'";
        //
        return $this;
    }
public function affect($value)
    {
        $i = Collection::count(self::$colmuns) - 1;
        self::$colmuns[$i] .= " default '".$value."'";
        //
        return $this;
    }
public function affect ( $ value ) { $ i = Collection :: count ( self :: $ colmuns ) - 1 ; self :: $ colmuns [ $ i ] .= " default '" . $ value . "'" ; // return $ this ; }
function to add default constraint.

@param string $value

@return schema
function to add default constraint .