make_column

template<class O, class T, class ...Op>
internal::column_t<O, T, Op...> make_column(const std::string &name, T O::*m, Op ...constraints);

template<class O, class T, class ...Op>
internal::column_t<O, T, Op...> make_column(const std::string &name, void (O::*setter)(T), const T& (O::*getter)() const, Op ...constraints);

template<class O, class T, class ...Op>
internal::column_t<O, T, Op...> make_column(const std::string &name, const T& (O::*getter)() const, void (O::*setter)(T), Op ...constraints);

Creates column objects used as make_table function argument. There are two ways to make a column: with member pointer and with member function pointer. First overload is used to create a column with member pointer. The second and the third are used to create a column with setter and getter member function pointers. First way is used to map public members, second - to map private and protected members with public setters and getters.

Parameters

(1) name Column name from database.

(2) m Member pointer mapped to this column. Example: &User::id.

(3) options Extra options used to specify column more precisely. For example: primary_key, autoincrement and default_value.

(4) setter Setter function pointer. Must return void, have only one argument of type T and be non-const.

(5) getter Getter function pointer. Must return const T&, have 0 arguments and be const.

Return value

column_t<O, T, Op...> instance.

Example

struct Employee {
    int id;
    std::string name;
    int age;
    std::shared_ptr<std::string> address;   //  optional
    std::shared_ptr<double> salary; //  optional
};

using namespace sqlite_orm;
auto storage = make_storage("make_storage_example.sqlite",
                            make_table("COMPANY",
                                       make_column("ID",
                                                   &Employee::id,
                                                   primary_key()),
                                       make_column("NAME",
                                                   &Employee::name),
                                       make_column("AGE",
                                                   &Employee::age),
                                       make_column("ADDRESS",
                                                   &Employee::address),
                                       make_column("SALARY",
                                                   &Employee::salary)));

Also

For mapping private/protected members please check out the example