#1 form.accepts is a filter that moves request.vars into form.vars after parsing and also populates form.errors. accepts should never be called twice. Why do you want to do it? I am sure there is a different way to achieve what you need.
#2 web2py retrieves sessions before your application code is executed, i.e. before your class is defined. therefore if an instance of the class was serialized in the session, it cannot be serialized. Bottom line: you cannot store your own objects in a session unless you pickle and unpickle them yourself. On Apr 1, 6:09 pm, Kevin Butler <[email protected]> wrote: > I spent way too much time figuring out what was happening with these > two issues, because their interaction sent me debugging various wrong > paths. > > But in essence, I found two behaviors that were unexpected and which > not provide an easy way to identify the problem. > > #1) If you call form.accepts a second time, it always returns false. > > That is, in the following code, you can get a "You have to enter a > value" or "True then false", but you can never get "You can't get > here": > > def index(): > form = FORM( > INPUT( _name="value", requires=IS_NOT_EMPTY()), > INPUT( _type="submit" ) > ) > if form.accepts( request.vars, session ): > if form.accepts( request.vars, session ): > response.flash = "You can't get here" > else: > response.flash = "True then false" > else: > response.flash = "You have to enter a value" > > return dict( form=form ) > > Is this by design? Why? If it /is/ by design, can we please have the > second "form.accepts" throw a nasty exception so we can avoid it? > > #2) If you store an instance of a custom class variable in a session > variable, you will invisibly get a new, clean session on the next > request. That is, in the following code, you can get "We'll get it > next time", but you just can't get "You can't get here" (unless you > cheat) > > class X: > pass > > def index(): > if session.nextTime: > response.flash = "You can't get here" > > session.x = X() > session.nextTime = 1 > response.flash = "We'll get it next time" > > return dict( session=session ) > > I imagine this is happening because of something like unpickling in > the framework (maybe?), but instead of silently getting a new session, > I'd much again much rather have an exception thrown... > > kb -- You received this message because you are subscribed to the Google Groups "web2py-users" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/web2py?hl=en.
