Hi,
If you really need to calculate total, you should leave that completely to
the view layer(client side java script).


On Fri, Aug 26, 2016 at 8:55 AM, Simon Ritchie <simonritchie...@gmail.com>
wrote:

> If you follow the Model View Controller (MVC) model, you should do all of
> the clever stuff in your controller and just use the view to render the
> result.
>
> When you invoke the view, you pass a structure with it contains the data
> to display.  The trick is to design your structure to contain all the data
> that the views needs.  In your case that might be a structure containing a
> total and a slice containing numbers.  In the view you iterate through the
> slice displaying each number, and then display the total.  If you want
> several columns then you might pass a structure containing a total and a
> slice of structures, where each structure contains the values for one row.
>
> Another typical example of this kind of thing is a page that contains some
> validated data with error messages.  In that case, your structure would
> contain the data and the error messages.
>
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