Hello,

1. why invalidId returns UUID::generate()?
2. Client has no fields "note" and "name".

Could you provide complete example as .cpp file?

Regards,
Boris Nagaev


On Tue, Jan 7, 2014 at 11:13 AM, Muhammad Nasser Al-Noimi
<mnno...@gmail.com> wrote:
> Hi,
>
> I'm trying to update a record using modify() for table with altered primary
> key, But the commit fails and exit with error: "constraint failed". When I
> checked the query generated I noticed that the primary key is in the fields
> list.
>
> The following code demonstrate the problem:
>
> //Definitions
> typedef long long DbId;
> namespace Wt {
>     namespace Dbo {
>     template<>
>     struct dbo_traits<Client> : public dbo_default_traits {
>         static DbId invalidId() { return UUID::generate(); }
>         static const char *surrogateIdField() { return 0; }
>     };
>     }
> class Client {
> public:
>     DbId id;
>     template<class Action>
>     void persist(Action& a)
>     {
>         dbo::id(a, id, "id");
>     }
> };
>
> // This is how I search for record to be modified:
> clientPtr = session()->find<Client>().where("name = ?").bind("name");
> // Every thing is ok until now, I can obtain the data and there is a result
> of this query
>
> //The error pops when I call the following:
> clientPtr.modify()->note = "note";
>
> Thanks alot,
> Nasser Al-Noimi
>
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