yml schrieb:
> Hello,
>
> what I am trying to do since this morning is to allow my logged in user
> to create Members. As you will see below Member is related to the User
> class by a foreignkey.
> so far I create User, Member using generic view. What I would like to
> do is to remove the user field from the form: "members_form". And this
> is where I am stuck.
> since the user attribute is mandatory for a member.
I'm on the magic-removal branch and I don't know if the following also
applies to the released version--there is an undocumented optional
`follow` parameter on the generic views. It can contain a dict of
{fieldname: Boolean}; a True means to use this field, a False means to
ignore it during validation and building the model from the form dict.
You can then use a custom Manipulator to set the user field. To do this,
create a version of the generic view that allows to pass in a
manipulator class (I'll ask the developers to enhance generic views this
way, since it's a really nice pattern. You can do pretty much with
custom manipulators and short views that call the generic views.
Here's how I use it in the view function:
def follow_only(model_cls, field_list):
"""builds the "follow" dict that specifies which fields to take from
the POST data.
Manipulators are passed a dict { fieldname : Boolean } as `follow`.
`follow_only()` builds this dict from the model class and a list of
field names (containing the fields to take from the POST data.
This should really go into a library module or to the django
contributions.
"""
res = dict.fromkeys(model_cls._meta.get_follow().keys(), False)
res.update(dict.fromkeys(field_list,True))
return res
class MailboxAddManipulator(models.Person.AddManipulator):
"""Customized Manipulator"""
def save(self, new_data):
# add pwuse
self.follow["pwuse"] = True
new_data["pwuse"] = models.Person.get_pwuse_bitmask("mail")
# add kunde
self.follow["user"] = True
new_data["user"] = get_new_mailbox_name(new_data["kunde"])
return models.Person.AddManipulator.save(self,new_data)
def create_mailbox(request, admin_name):
(...)
models.Kunde.objects.managed_by(admin.id).distinct() ] )
return create_object(
request,
models.Person,
follow=follow_only(models.Person,["name","pass_field","kunde"]),
template_name="mailbox",
post_save_redirect='..',
manipulator_class=MailboxAddManipulator,
)
Looking back at this, I don't think that you really need the
`follow_only` function, you probably can pass follow={"unwanted_field":
False} in your case.
Let me know if this helped! I'm also interested in any comments about
this style.
Michael
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