Hello Tiglath,
On Monday, April 6, 2015 at 1:06:43 PM UTC-3, Tiglath Suriol wrote:
>
>
> Environments have servers; servers have applications; applications can be
> on various servers, and applications have files.
>
> - servers must be unique within environments,
> - applications must be unique on each server.
> - files must be unique within an applications.
>
> Will this accomplish it?
>
You're almost there, you just have one relationship wrong: (I'll also add
some refactoring suggestions for your attribute names)
>
>
> class Environment(models.Model):
>
> ''' Environment can be "Production", "QA" or "CT" (customer test).'''
>
> env_name = models.CharField('Environment Name', max_length=20)
>
*env_name* could be only *name* for simplicity, in this case the class
Environment (or the environment object) works as a context,
so when you're accessing the *name* attribute it'll be cleaner, e.g:
>> environ.name # better than environ.env_name
>
> class Server(models.Model):
>
> environment = models.ForeignKey(Environment)
>
> server_name = models.CharField('Server Name', max_length=20,
> primary_key=True)
>
same here, use *name *instead.
>
>
> class Application(models.Model):
>
> servers = models.ManyToManyField(Server)
>
> app_name = models.CharField('Application Name', max_length=50,
> primary_key=True)
>
same here, use *name *instead.
>
>
> class File(models.Model):
>
> applications = models.ManyToManyField(Application)
>
If you need unique files for application, you should be using a ForeignKey
field instead of a ManyToMany.
> file_name = models.CharField('File Name', max_length=100,
> primary_key=True)
>
same here, use *name *instead.
>
>
> Thanks
>
>
>
>
>
>
>
As far as I see everything else looks fine.
Hope it helps!
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