django internationalization: counter is not available when marking strings for pluralization

问题

Adding plural to django stings in the code should use ungettext(), where the 3rd parameter is the counter to decide whether it should use singular or plural:

text = ungettext(
        'There is %(count)d %(name)s available.',
        'There are %(count)d %(name)s available.',
        count
) % {
    'count': count,
    'name': name
}

The parameter as counter should be available when ungettext() is called. But in my case, the string and the counter is separated so it's impossible to supply the counter at the right place:

class foo(bar):
    description="There is %(count)d %(names)s available."

class foo_2(bar):
    description="%(count)d rabbits jump over the %(names)s."

# More 'foo' type classes....

class foo_model(Model):
    count=IntegerField()
    name=CharField()
    klass=CharField()
    #model definition...

    def _get_self_class(self):
        if self.klass=='foo':
            return foo
        elif self.klass=='foo_2':
            return foo_2

    def get_description(self):
            return self._get_self_class.description%(self.count,self.name)

I'm a bit of stuck with how to internationalize this. Does anybody has a good idea?

Update:

I've changed the example to a closer match of my situation

回答1:

You need to construct ungettext somewhere, for example

class Foo(Bar):
    description = "There is %(count)d %(names)s available."
    description_plural = "There are %(count)d %(names)s available."

class FooModel(Model):
    count = IntegerField()
    name = CharField()
    # model definition...

    def get_description(self):
        return ungettext(Foo.description, Foo.description_plural, self.count) % \
                   {'count':self.count, 'name':self.name}

来源：https://stackoverflow.com/questions/10517683/django-internationalization-counter-is-not-available-when-marking-strings-for-p

标签

django

internationalization