Appconfig cast boolean

[Mark Graves]

What is the proper syntax for appconfig.ini if the cast is a boolean.

With a fresh install of web2py source, 

appconfig.ini contents:

; App configuration

; db configuration

[db]

uri       = sqlite://storage.sqlite
migrate   = 0
pool_size = 1
 
; smtp address and credentials
[smtp]
server = smtp.gmail.com:587
sender = you@gmail.com
login  = username:password

; form styling
[forms]
formstyle = bootstrap3_inline
separator =

default/index

myconf = AppConfig(reload=True)

mc = myconf.take('db.migrate',cast=bool)

print mc
print type(mc)

output:

True
<type 'bool'>

switching to False yields same output.

What am i doing wrong?

[Leonel Câmara]

Well you're casting a string so any non-empty string is True. You have to cast to an int.

[Anthony]

Therefore:

mc = myconf.take('db.migrate',cast=lambda value: bool(int(value)))

Anthony

[黄祥]

nice, it seems we lack of it in the scaffolding app. (in private.ini there is a migrate value yet in the db.py not have)

best regards,

stifan

[Mark Graves]

Should've thought of that.

Nice to confirm intended behavior.

I guess I could have done bool(mc) = myconf.take('db.migrate',cast = int)

[Mark Graves]

And, sanity check here, I can also do the following, correct:

[db]

uri       = sqlite://storage.sqlite
migrate   =

myconf = AppConfig()

mc = myconf.take('db.migrate',cast=bool)

print mc
print type(mc)

Which should yield False, Boolean

[Massimo Di Pierro]

That that should be correct.

[ermolaev...@gmail.com]

I talk about it!

If in .ini file:

migrate = False

it conderted to string too and is True in python code!

понедельник, 3 августа 2015 г., 3:51:52 UTC+3 пользователь Mark Graves написал:

[Mark Graves]

Set migrate = 

(Empty string) => False

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[黄祥]

tested it. return an error if i put the value int = 1 as true in appconfig.ini
e.g.

privates/appconfig.ini

[auth]

create_user_groups = 0 ; return an error traceback when value = 1, when value = 0, no error occured, works as expected

models/db.py

auth.settings.create_user_groups = myconf.take('auth.create_user_groups', cast = lambda value: bool(int(value) ) )

error traceback:

Traceback

1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14.

Traceback (most recent call last): File "/Users/MacBookPro/site/web2py/gluon/restricted.py", line 227, in restricted exec ccode in environment File "/Users/MacBookPro/site/web2py/applications/testing/controllers/default.py", line 44, in <module> File "/Users/MacBookPro/site/web2py/gluon/globals.py", line 412, in <lambda> self._caller = lambda f: f() File "/Users/MacBookPro/site/web2py/applications/testing/controllers/default.py", line 19, in user return dict(form=auth()) File "/Users/MacBookPro/site/web2py/gluon/tools.py", line 1614, in __call__ return getattr(self, args[0])() File "/Users/MacBookPro/site/web2py/gluon/tools.py", line 2939, in register self.settings.create_user_groups % form.vars, description) TypeError: unsupported operand type(s) for %: 'bool' and 'Storage'

Error snapshot 

<type 'exceptions.TypeError'>(unsupported operand type(s) for %: 'bool' and 'Storage')

[Mark Graves]

I just tried to reproduce your error and could not.

Judging from the error, are you sure you are passing in the string 'auth.create_user_groups' and not auth.create_user_groups as a variable?

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[黄祥]

pardon, i just tried, what is discussed in this thread on my configuration, parsing as string .'auth.create_user_groups' not auth.create_user_groups as a variable
e.g.
models/db.py
auth.settings.create_user_groups = False

i want to change the configuration into privates/appconfig.ini with :

e.g.

privates/appconfig.ini

[auth]

create_user_groups = 0 ; return an error traceback when value = 1, when value = 0, no error occured, works as expected

models/db.py

auth.settings.create_user_groups = myconf.take('auth.create_user_groups', cast = lambda value: bool(int(value) ) )

but it returns an error when i set the value in privates/appconfig.ini into 1

any idea?

thanks n best regards,

stifan

[Mark Graves]

Can you reproduce this error in a fresh welcome app?

Then you can send just the one line?

Is it solely:

; auth

[auth]

create_user_groups = 1

VS

; auth

[auth]

create_user_groups = 0

?

[Mark Graves]

Also:

auth.settings.create_user_groups = myconf.take('auth.create_user_groups', cast=lambda value: bool(int(value)))

[黄祥]

same result, here is step i took
1. create new simple application from web2py admin named a

2. add auth in privates/appconfig.ini

[auth]

create_user_groups = 1

3. add auth in models/db.py

auth.settings.create_user_groups = myconf.take('auth.create_user_groups', cast = lambda value: bool(int(value) ) )

attached the simple app that i took the step above, when i change create_user_groups = 0, no error occured when i sign up, but, when i set create_user_group = 1, same error traceback occured, when i sign up

best regards,

stifan

[Mark Graves]

It appears that auth.settings.create_user_groups takes either False or the string that formats the user group creation message.

So you'll need to provide a string format representation ie '%(id)s' as is shown in the error.

However that won't convert to a boolean, so your cast function will fail.

-Mark

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