db.define_table('abonent', Field('a'))
db.define_table('person', db.abonet, Field('b')) # has a,b
db.define_table('company', db.abonet, Field('c')) # has a,c
db.define_table('provider', db.company, Field('d')) # has a,c,d
On Wednesday, 27 January 2016 17:05:57 UTC-6, RekGRpth wrote:
>
> I have 4 classes: Abonent, Person, Company and Provider.
> Person and Company are (sublasses of) Abonents, and Provider is
> (subclasses of) Company.
> In django I can write
>
> class Abonent(models.Model): passclass Person(Abonent): passclass
> Company(Abonent): passclass Provider(Company): pass
>
> how it will be in web2py?
> follow does not works:
>
> db.define_table('abonent')
> db.define_table('person', Field('abonent', db.abonent),
> primarykey=['abonent'])
> db.define_table('company', Field('abonent', db.abonent),
> primarykey=['abonent'])
> db.define_table('provider', Field('company', db.company),
> primarykey=['company'])
>
> and this
>
> db.define_table('abonent')
> db.define_table('person', Field('abonent', db.abonent),
> primarykey=['abonent'])
> db.define_table('company', Field('abonent', db.abonent),
> primarykey=['abonent'])
> db.define_table('provider', Field('company', db.company.abonent),
> primarykey=['company'])
>
> and this
>
> db.define_table('abonent')
> db.define_table('person', Field('abonent', type='reference abonent'),
> primarykey=['abonent'])
> db.define_table('company', Field('abonent', type='reference abonent'),
> primarykey=['abonent'])
> db.define_table('provider', Field('company', type='reference
> company.abonent'), primarykey=['company'])
>
>
--
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