On 18 Dec 2014, at 11:02 pm, Thiago H de Paula Figueiredo <thiag...@gmail.com> wrote:
> On Thu, 18 Dec 2014 01:21:03 -0200, Geoff Callender > <geoff.callender.jumpst...@gmail.com> wrote: > >> The starting point of the problem is that Form has a copy of its rendered >> state in a hidden field, and it depends on Form knowing what it rendered. > > I'm afraid you got this wrong, Geoff. Tapestry never stores the rendering of > anything like JSF does, for example. Form does store information inside the > t:formdata hidden field, but it's not the rendered state. Instead, it's > instances of ComponentAction created by the form field component instances in > order to process the form submission when it happens. I should have known that. Thanks Thiago! Experimenting with a project today, I've also learned that each FormFragment also has a formdata field, and its value changes depending on its "visible" parameter. Makes sense, since that parameter affects its actions. Thiago, what I now don't understand is why is a Form's formdata different every time it is rendered? A FormFragment's formdata is the same every time, but a Form's formdata is not. Is that something to do with the hmac protection? > >> If you put a Zone inside a Form and you refresh the Zone, and the Zone >> contains input fields (any descendant of Field) then you will usually get an >> Exception. It's usually a misleading message (something about Form inside a >> Form IIIRC), but the reason it cannot be allowed is that you're not also >> refreshing Form's hidden state field. > > I believe this part is 100% correct. > > -- > Thiago H. de Paula Figueiredo > Tapestry, Java and Hibernate consultant and developer > http://machina.com.br > > --------------------------------------------------------------------- > To unsubscribe, e-mail: users-unsubscr...@tapestry.apache.org > For additional commands, e-mail: users-h...@tapestry.apache.org > --------------------------------------------------------------------- To unsubscribe, e-mail: users-unsubscr...@tapestry.apache.org For additional commands, e-mail: users-h...@tapestry.apache.org
