Thank you very much Anthony. I have read Chapter 7 up to the "Hidden Fields" section and it is already more clear in my head.
Archibald On 28 oct, 02:12, Anthony <abasta...@gmail.com> wrote: > On Thursday, October 27, 2011 7:57:31 PM UTC-4, Archibald Linx wrote: > > > 1) Sometimes I see in the documentation "if form.process().accepted:" > > and sometimes "if form.accepts(request.vars, session):". What's the > > difference between the two ? > > form.process() was added very recently and is now preferred over > form.accepts (though the latter is still perfectly fine). > Seehttp://web2py.com/book/default/chapter/07#The-process-and-validate-me.... > form.process() does the same thing (it actually calls form.accepts()), but > returns the form itself (hence the need to add .accepted if you want to see > if it was accepted). > > > > > 2) On page 109 ( > >http://www.web2py.com/book/default/chapter/03#An-Image-Blog > > ), I have not really understood the following sentence : > > > "Line 9 processes the submitted form (the submitted form variables are > > in request.vars) within the current session (the session is used to > > prevent double submissions, and to enforce navigation)." > > > Line 9 refers to : "form.accepts(request.vars, session):" > > > Would it be different if I would just write : > > "form.accepts(request.vars):" ? > > Yes, if you leave out the session, it won't create a hidden _formkey field > and store the value in the session. This is the mechanism web2py uses to > prevent double form submission and CSRF attacks. > Seehttp://web2py.com/book/default/chapter/07#Hidden-fields. > > > > > > > > > > > 3) On page 108 ( > >http://www.web2py.com/book/default/chapter/03#An-Image-Blog > > ), there is written : > > > if form.process().accepted: > > response.flash = 'your comment is posted' > > > On page 112 (http://www.web2py.com/book/default/chapter/03#Adding-CRUD > > ), there is written : > > > form = SQLFORM(table) > > if form.process().accepted: > > session.flash = '...' > > > Why is it sometimes "response.flash" and sometimes "session.flash" ? > > response.flash if the form page will be reloading; session.flash if you are > redirecting to a new page. > Seehttp://web2py.com/book/default/chapter/07#Forms-and-redirection. > > Basically, things should hopefully clear up when you read the forms chapter. > > Anthony
