def attach_tags(objs):
"""
Fetch tags from `objs` in one query and then attach them to a property on
each instance.
Assumes every instance in `objs` uses the same model.
"""
if objs:
obj_dict = {obj.id: obj for obj in objs}
m2m_name = Tag._get_m2m_name(objs[0])
field_name = getattr(objs[0], m2m_name).query_field_name
qs = (Tag.objects.not_blocked()
.filter(**{'%s__in' % field_name: obj_dict.keys()})
.values_list('%s__id' % field_name, 'tag_text'))
for obj, tags in sorted_groupby(qs, lambda x: x[0]):
setattr(obj_dict[obj], '%s_list' % m2m_name, [t[1] for t in tags])
def attach_tags(objs):
"""
Fetch tags from `objs` in one query and then attach them to a property on
each instance.
Assumes every instance in `objs` uses the same model.
"""
if objs:
obj_dict = {obj.id: obj for obj in objs}
m2m_name = Tag._get_m2m_name(objs[0])
field_name = getattr(objs[0], m2m_name).query_field_name
qs = (Tag.objects.not_blocked()
.filter(**{'%s__in' % field_name: obj_dict.keys()})
.values_list('%s__id' % field_name, 'tag_text'))
for obj, tags in sorted_groupby(qs, lambda x: x[0]):
setattr(obj_dict[obj], '%s_list' % m2m_name, [t[1] for t in tags])
def rollup(xs):
groups = sorted_groupby(xs, 'version_id')
return dict((k, list(vs)) for k, vs in groups)
def rollup(xs):
groups = sorted_groupby(xs, 'version_id')
return dict((k, list(vs)) for k, vs in groups)
