On May 20, 2010, at 10:19 AM, Carey Gagnon wrote:
> The brick wall I hit is this:
>
> I have a database with different customers, projects, and tasks, with start
> times and end times. I have created a virtual field to get the duration of
> those tasks. Works great to here.
>
> The brick wall??
>
> Now I want to take that duration virtual field and create another virtual
> field that will calculate the total time for the project.
I'm not sure that another virtual field is the best solution, unless it
is defined as part of the project bizobj. Is that what you're doing? It would
be pretty meaningless as part of the tasks bizobj.
If the virtual field is defined in the project bizobj, it is
straightforward to calculate the sum of the child values for a given project.
Paul has done much more work on this, so I'm hoping he can give you a better
example than I could come up with.
-- Ed Leafe
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