add 'authenticated users' (i.e. anyone logged in) read privileges to presentations (in django shell_plus) - can be edited and run, or copy/pasted into the shell

mdid_admin_tricks_pres_perms.py

from rooibos.presentation.models import Presentation
from rooibos.access.models import ExtendedGroup, AUTHENTICATED_GROUP, AccessControl
from django.contrib.contenttypes.models import ContentType
from rooibos.contrib.tagging.models import Tag, TaggedItem

# lets get the stuff we need
# user (owner) - edit that, of course
usr = User.objects.get(username='someuser')

# content-type, in this case presentation
ct = ContentType.objects.get(name='presentation')

# px = specific presentation objects - also edit specific ids
p1 = Presentation.objects.get(id=5457)
p2 = Presentation.objects.get(id=5451)

# g = the 'authenticated users' group
g = ExtendedGroup.objects.filter(type=AUTHENTICATED_GROUP)
g = g[0] if g else ExtendedGroup.objects.create(type=AUTHENTICATED_GROUP, name='Authenticated Users')

# add global read privileges for logged in users to p2
AccessControl.objects.get_or_create(object_id=p2.id, content_type=ct, usergroup=g, read=True)

### so going further, if you want to do a bunch at once

# get all the tags of a single user
existing_tags = Tag.objects.usage_for_model(OwnedWrapper,filters=dict(user=usr, content_type=OwnedWrapper.t(Presentation)))
# pick a tag (you can just type existing_tags to get a list) - this is how you choose
t1 = existing_tags[5]
# <Tag: Futurism>

# these next two commands grab all presentations tagged by a single users tag (futurism in this case)
qs = OwnedWrapper.objects.filter(content_type=OwnedWrapper.t(Presentation))
ids = [list(TaggedItem.objects.get_by_model(qs, '"%s"' % tag).values_list('object_id', flat=True)) for tag in [t1]]

# a little for-loopage and we're done. 
for list in ids:
    for id in list:
        AccessControl.objects.get_or_create(object_id=id, content_type=ct, usergroup=g, read=True)


### here's what some of the variables from above look like printed out

In [89]: existing_tags
Out[89]: 
[<Tag: 001. AWW Fall 13 Part III>,
 <Tag: 01. Picasso and Modern Masters>,
 <Tag: 1. Uneasy/Censorship>,
 <Tag: 1960s>,
 <Tag: AWW Fall 11 & 10 part III>,
 <Tag: Futurism>,
 <Tag: Futurism MDID2>,
 <Tag: Italian Film/Neorealism>,
 <Tag: Misc. shows>,
 <Tag: Picasso and Modern Masters>,
 <Tag: Picasso, Matisse, etc./Spring '06>,
 <Tag: PicMatDuchBran>,
 <Tag: Spain''>,
 <Tag: Uneasy/Censorship>]

In [90]: p1
Out[90]: <Presentation: Presentation object>


In [91]: ids
Out[91]: 
[[4995L,
  5449L,
  5450L,
  5451L,
  5452L,
  5453L,
  5454L,
  5455L,
  5456L,
  5457L,
  5458L,
  5459L,
  5460L,
  5461L,
  5462L,
  5463L,
  5474L]]