def tag(obj, tag_name):
"""
Tag an object with a tag name
:param obj:
:param tag_name:
:return:
"""
#check for dupes
all_tags = get_tags(obj)
conflict_filtered = filter(lambda x: x.tag == tag_name, all_tags)
if len(conflict_filtered) > 0:
return conflict_filtered[0]
tag_obj = Tag()
tag_obj.obj_id = obj._id
tag_obj.coll_name = obj.__class__.coll_name()
tag_obj.tag = tag_name
tag_obj._id = save(tag_obj)
return tag_obj
