Model implementing belongsToMany not compiling about tinyorm HOT 11 CLOSED

#pragma once
#ifndef MODELS_USER_HPP
#define MODELS_USER_HPP

#include <QStringList>

#include <orm/tiny/model.hpp>


namespace Models {

using Orm::Tiny::Model;
using Orm::Tiny::Relations::Pivot;

// NOLINTNEXTLINE(misc-no-recursion)
class Role;

class User final : public Model<User, Role, Pivot> {
   friend Model;
   using Model::Model;

 public:
   /*! The roles that belong to the user. */
   std::unique_ptr<BelongsToMany<User, Role>>
   roles() {
      return belongsToMany<Role>();
   }

 private:
   /*! Map of relation names to methods. */
   QHash<QString, RelationVisitor> u_relations{
       {"roles", [](auto& v) { v(&User::roles); }},
   };
};

class Role final : public Model<Role, User, Pivot> {
   friend Model;
   using Model::Model;

 public:
   /*! The users that belong to the role. */
   std::unique_ptr<BelongsToMany<Role, User>>
   users() {
      return belongsToMany<User>();
   }

 private:
   /*! Map of relation names to methods. */
   QHash<QString, RelationVisitor> u_relations{
       {"users", [](auto& v) { v(&Role::users); }},
   };
};
}  // namespace Models

#endif  // MODELS_USER_HPP

#include <orm/tiny/relations/pivot.hpp>

class User final : public Model<User, Role, Pivot> {
   friend Model;
   using Model::Model;

 public:
   // /*! The roles that belong to the user. */
   // std::unique_ptr<BelongsToMany<User, Role>>
   // roles() {
   //    return belongsToMany<Role>();
   // }

 private:
   // /*! Map of relation names to methods. */
   // QHash<QString, RelationVisitor> u_relations{
   //     {"roles", [](auto& v) { v(&User::roles); }},
   // };
};