So, you want to add some logic to SQLFORM.accepts so if an insert or update
fails after validation passes, the form still reports an error? Would you
specify the error message in the call to SQLFORM.accepts?
Anthony
On Monday, August 18, 2014 11:25:32 AM UTC-4, Paolo Valleri wrote:
>
> Hi all,
> a common problem is a constraint on multiple fields. There are few ways to
> handle this situation, I tried by using the _before_* callbacks.
> Currently, if the the callback return True (which means that the
> constrains validation is failed) the sqlform.grid doesn't raise any message
> or notification.
> Is that the correct behavior?
>
> An example is that:
> def index():
> def some_logic(f): return True
> db.define_table('station',
> Field('name'),
> )
> db.station._before_insert.append(some_logic)
> grid = SQLFORM.grid(db.station)
>
> return {'grid':grid}
> By using this example, a record will be never stored but the grid will
> 'correctly' return every time. If you have many items, it will be difficult
> to understand what really happened.
> I know that I can add session.flash = 'error message' in the some_logic
> function to display a flash message in case of error but even in this case
> the user will lose the form with the filled fields.
>
> From my point of view, a possible alternative scenario would be to 'stay'
> in the form and to show to the user a general error message on top of the
> form.
> Any idea?
>
> Paolo
>
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