You want:
## receive info using URL params, and show the form
## receive info using form when URL params present
## show empty form when no URL params present
## receive info using form when no URL params present
Do not do it this way because your point 2 is outsite the http specs
and different browsers will behave in different ways.
Some will discard the variables in the URL, some will not, some may
duplicate the values. This is not a web2py issue. This is a browser
issue. There is no standard.
You should do
def form():
hidden = dict([(k,v) for (k,v) in request.get_vars.items() if not
k in ['name','email','sure']]
form=FORM(TABLE(TR("Your name:",INPUT
(_type="text",_name="name",_value=request.vars.name or '',
requires=IS_NOT_EMPTY())),
TR("Your email:",INPUT
(_type="text",_name="email",_value=request.vars.email or
'',requires=IS_EMAIL())),
TR("Admin",INPUT(_type="checkbox",_name="admin")),
TR("Sure?",SELECT
('yes','no',_name="sure",requires=IS_IN_SET(['yes','no']))),
TR("Profile",TEXTAREA(_name="profile",value="write
something here")),
TR("",INPUT(_type="submit",_value="SUBMIT"))),
hidden=hidden, action='POST', method=URL(r=request))
if form.accepts(request.vars,session):
form.vars.update(hidden)
else:
pass
On May 29, 11:32 am, Dan <[email protected]> wrote:
> > 2) you are using
>
> > form.accepts(request.vars,session):
>
> > Which is desigend to prevent double submissions and various types of
> > attacks by hiding hidden one time tokens in the form and preventing
> > validation if the form if the token is not returned.
> > You can disable this by using
>
> > form.accepts(request.vars,formname=None):
>
> > and the request.vars.name will be copied in form.vars.name
>
> Thanks for that suggestion, it helped a bit.
>
> Sorry, I wasn't clear in my earlier message: I sent my code, and in
> addition to that I sent the URL to call one of the sample apps in the
> web2py documentation which showed the same symptoms.
>
> Here is a self-contained example, with 3 different options for calling
> the "form.accepts()" method, each having slightly different problems/
> symptoms - I need to get one of them working (or some other approach).
> The controller needs to be able to acecpt information from 2 different
> sources: either using parameters in the URL, or using a form on the
> web page. If the user starts out sending information using URL
> parameters, they should be able to use the form to send a subsequent
> set of information.
> That means the controller needs to do these 4 things:
> ## receive info using URL params, and show the form
> ## receive info using form when URL params present
> ## show empty form when no URL params present
> ## receive info using form when no URL params present
>
> The URL with parameters that I'm using is this:
> http://127.0.0.1:8000/my_app/input_data/form?admin=False&[email protected]&name=j&profile=something&sure=yes
> and the URL without any parameters is of course
> this:http://127.0.0.1:8000/my_app/input_data/form
>
> here is the code in the controller called input_data.py, mostly
> following the documentation's example 28 (http://www.web2py.com/
> examples/default/examples):
>
> def form():
> form=FORM(TABLE(TR("Your name:",INPUT
> (_type="text",_name="name",requires=IS_NOT_EMPTY())),
> TR("Your email:",INPUT
> (_type="text",_name="email",requires=IS_EMAIL())),
> TR("Admin",INPUT(_type="checkbox",_name="admin")),
> TR("Sure?",SELECT
> ('yes','no',_name="sure",requires=IS_IN_SET(['yes','no']))),
> TR("Profile",TEXTAREA(_name="profile",value="write
> something here")),
> TR("",INPUT(_type="submit",_value="SUBMIT"))))
>
> ### VALIDATION 1 (disabled)
> # if form.accepts(request.vars,session):
> ## receive info using URL params and show form: PROBLEM.
> information appears to be received but not processed. it says "please
> fill in the form" and the request variables are displayed (but not
> form variables).
> ## receive info using form when URL params present: ERROR. ("if
> form.accepts(request.vars,session):" leads to error "TypeError:
> expected string or buffer" from validators.py)
> ## show empty form when no URL params present: OK
> ## receive info using form when no URL params present: OK
>
> ### VALIDATION 2 (enabled)
> if form.accepts(request.vars,formname=None):
> ## receive info using URL params and show form: OK
> ## receive info using form when URL params present: ERROR. ("if
> form.accepts(request.vars,formname=None):" leads to error "TypeError:
> expected string or buffer" from validators.py)
> ## show empty form when no URL params present: PROBLEM. shows user
> a "form is invalid" message
> ## receive info using form when no URL params present: OK
>
> ### VALIDATION 3 (disabled)
> # if form.accepts(request.vars):
> ## receive info using URL params and show form: PROBLEM.
> information appears to be received but not processed. it says "please
> fill in the form" and the request variables are displayed (but not
> form variables).
> ## receive info using form when URL params present: ERROR. ("if
> form.accepts(request.vars):" leads to error "TypeError: expected
> string or buffer" from validators.py)
> ## show empty form when no URL params present: OK
> ## receive info using form when no URL params present: OK
>
> response.flash="form accepted"
> elif form.errors:
> response.flash="form is invalid"
> else:
> response.flash="please fill the form"
> return dict
> (form=form,form_vars=form.vars,request_vars=request.vars)
>
> So the issues that I'm trying to understand and fix:
> 1) when trying to receive info using form when URL params present,
> what does the error involving "expected string or buffer" mean? How
> can I fix that?
> 2) using validation method #2, how can I avoid showing the error
> message when the form is loaded without any parameters in the URL?
> 3) using validation method #1 or #3, why does the controllerappear to
> receive info from the URL but not act on it?
>
> Thanks
>
> Dan
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