[odb-users] How do I make a lookup (database->load<classname>(std::string_identifier)) case insensetive?

[Rafal Gm]

Hello!

I have a class for my users, but one user found a bug when joining with the
same nickname but other case:

User and user.

Now my application detects this user has no account, while he should
because "User" exists.

if my class is as follow:

#pragma db object
class user
{
public:
   const std::string& nickname() const {return nickname_;}
private:
    friend class odb::access;
#pragma db unique id index
    std::string nickname_;
public:
    user() {}
    user(std::string inickname) : nickname_("")
    {}
};

how do I make the load<user>("nicKnAmE"); case insensetive?