Re: [Configobj-develop] Optional Sections?

[Eli C. <el...@co...>]

I don't believe there's any way to make a section optional in the way you
want.  The reasoning is that when a section is defined in the configspec,
it always exists in your config even if it's not included in the config
file.  Therefore, in your example [[[Location]]] will always exist for each
of the __many__ subsections regardless of whether the config file defines
it.  In cases like this I would typically assign default values to all of
the options in that subsection.

 - Eli



On Fri, Jul 31, 2015 at 8:08 PM, Sumit's Mailing Lists <
li...@ba...> wrote:

> I've been looking through the docs and StackOverflow and I'm still a
> little stumped on this. Can I have an optional section in my config
> specification? For example, say I had this as my configspec:
>
>     config_specification = """
> [General]
>
> sample_rate = float
>
> [Data]
>   [[__many__]]
>     type = option('sense.xml')
>       [[[Identifier]]]
>         type = option("name", "mac", "uuid")
>         adapter = string(default='')
>         id   = string(default='')
>         file = string(default='')
>       [[[Location]]]
>         type = option("virtual", "gps")
>         longitude = string(default='')
>         latitude = string(default='')
>         altitude = string(default='')
>         speed = string(default='')
>         climb = string(default='')
>         track = string(default='')
>         longutide_error = string(default='')
>         latitude_error = string(default='')
>         altitude_error = string(default='')
>         speed_error = string(default='')
>         climb_track = string(default='')
>         track_error = string(default='')
> """
>
> Is there a way to make [[[Locaiton]]] optional, so it can be missing and
> still pass validation (assuming that I do validation like so):
>
>         cfg = ConfigObj(filename,
> configspec=BootStrap.config_specification.split('\n'))
>
>         test = cfg.validate(Validator())
>
>         valid = True
>         for (section_list, key, _) in flatten_errors(cfg, test):
>             if key is not None:
>                 logging.error('Invalid value for key {0} in section
> {1}'.format(key, ', '.join(section_list)))
>                 valid = False
>             else:
>                 logging.error('Section {0} failed validation'.format(',
> '.join(section_list)))
>                 valid = False
>         if not valid:
>             exit(3)
>
> Thanks
> Sumit
>
>
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