I've been working loosely with web2py for a couple of years. Love it, love
python.
I recently bought the book Web2py Application Development Cookbook and
started working with the wizard recipe. It seems fairly simple and easy to
understand.
I ran the project and getting an error that I can't figure out and looking
for someone with outside eyes to help me figure this one out. I checked
the book errata and nothing.
Seems like the wizard page runs the way it's supposed to but the last page
fails out (when it's supposed to be 'done'.
My controller code:
*# -*- coding: utf-8 -*-# try something likedef wizard(): #
Field('ruleNumber','integer'), #
Field('ruleStatement','string'), #
Field('ruleParms','string'), STEPS = {0:
('srcFile','ruleParms2'), 1: ('ruleStatement',
'ruleParms'), 2: URL('done')} step = int(request.args(0) or
0) if not step in STEPS: redirect(URL(args=0)) fields =
STEPS[step] if step == 0: session.wizard = {} if
isinstance(fields, tuple): form = SQLFORM.factory(*[f for f in
db.columnSourceToDestMapDetail if f.name in fields]) if
form.accepts(request, session):
session.wizard.update(form.vars) redirect(URL(args=step+1))
else: db.columnSourceToDestMapDetail.insert(**session.wizard)
session.flash = T('wizard completed') #redirect(fields) return
dict(form=form, step=step)*
my view (wizard.html):
{{extend 'layout.html'}}
<h1>Wizard Step {{=step}}</h1>
{{=form}}
my view (done.html):
{{extend 'layout.html'}}
<h1>This is the done.html template</h1>
{{=BEAUTIFY(response._vars)}}
my model:
tableName = 'columnSourceToDestMapDetail'
db.define_table(tableName,
Field('srcFile','string'),
Field('ruleNumber','integer'),
Field('ruleStatement','string'),
Field('ruleParms','string'),
Field('ruleParms2','string')
)
Finally, my error: (sorry so long):
Error ticket for "NG_MappingConversion" Ticket ID
127.0.0.1.2016-01-26.08-43-19.f513d99f-1f18-4317-9c38-7fd9dd2b709d
<type 'exceptions.UnboundLocalError'> local variable 'form' referenced
before assignment Version
web2py™ Version 2.12.3-stable+timestamp.2015.08.19.00.18.03
Python Python 2.7.8: C:\Python27\python.exe (prefix: C:\Python27) Traceback
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
Traceback (most recent call last):
File "C:\Users\benninsc\Documents\web2py\gluon\restricted.py", line 227, in
restricted
exec ccode in environment
File
"C:/Users/benninsc/Documents/web2py/applications/NG_MappingConversion/controllers/wizard.py"
<http://127.0.0.1:8000/admin/default/edit/NG_MappingConversion/controllers/wizard.py>,
line 26, in <module>
File "C:\Users\benninsc\Documents\web2py\gluon\globals.py", line 412, in
<lambda>
self._caller = lambda f: f()
File
"C:/Users/benninsc/Documents/web2py/applications/NG_MappingConversion/controllers/wizard.py"
<http://127.0.0.1:8000/admin/default/edit/NG_MappingConversion/controllers/wizard.py>,
line 17, in wizard
if form.accepts(request, session):
UnboundLocalError: local variable 'form' referenced before assignment
Error snapshot [image: help]
<http://127.0.0.1:8000/admin/default/ticket/NG_MappingConversion/127.0.0.1.2016-01-26.08-43-19.f513d99f-1f18-4317-9c38-7fd9dd2b709d#>
<type 'exceptions.UnboundLocalError'>(local variable 'form' referenced
before assignment)
inspect attributes
Frames
-
*File C:\Users\benninsc\Documents\web2py\gluon\restricted.py in
restricted at line 227* code arguments variables
-
*File
C:\Users\benninsc\Documents\web2py\applications\NG_MappingConversion\controllers\wizard.py
in <module> at line 26* code arguments variables
-
*File C:\Users\benninsc\Documents\web2py\gluon\globals.py in <lambda> at
line 412* code arguments variables
-
*File
C:\Users\benninsc\Documents\web2py\applications\NG_MappingConversion\controllers\wizard.py
in wizard at line 17* code arguments variables
Function argument list
()
Code listing
12.
13.
14.
15.
16.
17.
18.
19.
20.
21.
fields = STEPS[step]
if step == 0:
session.wizard = {}
if isinstance(fields, tuple):
form = SQLFORM.factory(*[f for f in db.columnSourceToDestMapDetail
if f.name in fields])
if form.accepts(request, session):
session.wizard.update(form.vars)
redirect(URL(args=step+1))
else:
db.columnSourceToDestMapDetail.insert(**session.wizard)
Variables
global request <Storage {'_vars': None, 'function': 'wizard',
'...\\web2py\\applications\\NG_MappingConversion\\'}>
global session <Storage {'flash': None, 'wizard':
{'ruleStateme...357ec', 'ee50f7e5-3ac4-4bd3-946a-68e743cb8fde']}>
form undefined
Context
locals request session response
In file:
C:\Users\benninsc\Documents\web2py\applications\NG_MappingConversion\controllers/wizard.py
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
13.
14.
15.
16.
17.
18.
19.
20.
21.
22.
23.
24.
25.
26.
27.
# -*- coding: utf-8 -*-
# try something like
def wizard():
# Field('ruleNumber','integer'),
# Field('ruleStatement','string'),
# Field('ruleParms','string'),
STEPS = {0: ('srcFile','ruleParms2'),
1: ('ruleStatement', 'ruleParms'),
2: URL <http://127.0.0.1:8000/examples/global/vars/URL>('done')}
step = int(request
<http://127.0.0.1:8000/examples/global/vars/request>.args(0) or 0)
if not step in STEPS: redirect
<http://127.0.0.1:8000/examples/global/vars/redirect>(URL
<http://127.0.0.1:8000/examples/global/vars/URL>(args=0))
fields = STEPS[step]
if step == 0:
session <http://127.0.0.1:8000/examples/global/vars/session>.wizard = {}
if isinstance(fields, tuple):
form = SQLFORM
<http://127.0.0.1:8000/examples/global/vars/SQLFORM>.factory(*[f for f in
db.columnSourceToDestMapDetail if f.name in fields])
if form.accepts(request
<http://127.0.0.1:8000/examples/global/vars/request>, session
<http://127.0.0.1:8000/examples/global/vars/session>):
session
<http://127.0.0.1:8000/examples/global/vars/session>.wizard.update(form.vars)
redirect <http://127.0.0.1:8000/examples/global/vars/redirect>(URL
<http://127.0.0.1:8000/examples/global/vars/URL>(args=step+1))
else:
db.columnSourceToDestMapDetail.insert(**session
<http://127.0.0.1:8000/examples/global/vars/session>.wizard)
session <http://127.0.0.1:8000/examples/global/vars/session>.flash = T
<http://127.0.0.1:8000/examples/global/vars/T>('wizard completed')
#redirect(fields)
return dict(form=form, step=step)
response <http://127.0.0.1:8000/examples/global/vars/response>._vars=response
<http://127.0.0.1:8000/examples/global/vars/response>._caller(wizard)
--
Resources:
- http://web2py.com
- http://web2py.com/book (Documentation)
- http://github.com/web2py/web2py (Source code)
- https://code.google.com/p/web2py/issues/list (Report Issues)
---
You received this message because you are subscribed to the Google Groups
"web2py-users" group.
To unsubscribe from this group and stop receiving emails from it, send an email
to [email protected].
For more options, visit https://groups.google.com/d/optout.
