floof/model/art.py

   1 #
   2 #   floof/floof/model/art.py
   3 #
   4 #   Copyright (c) 2009 Scribblr
   5 #
   6
   7 # from elixir import Entity, Field, Integer, Unicode
   8 from elixir import *
   9 import elixir
  10
  11 from pylons import config
  12
  13 from floof.lib.file_storage import get_path, save_file
  14
  15 from floof.lib.dbhelpers import find_or_create
  16
  17
  18
  19 class Art(Entity):
  20     title = Field(Unicode(120))
  21     original_filename = Field(Unicode(120))
  22     hash = Field(String)
  23
  24     uploaded_by = ManyToOne('User')
  25     tags = OneToMany('Tag')
  26
  27     # def __init__(self, **kwargs):
  28     #     # I wanted to check for the existence of the file, but...
  29     #     # for some reason this FieldStorage object always conditions as falsey.
  30     #     # self.hash = save_file("art", kwargs.pop('file'))
  31     #     super(Art, self).__init__(**kwargs)
  32     #     # this is what super is doing, pretty much.
  33     #     # for key, value in kwargs.items():
  34     #     #     setattr(self, key, value)
  35     # left for posterity.
  36
  37     def set_file(self, file):
  38         self.hash = save_file("art", file)
  39
  40     file = property(get_path, set_file)
  41
  42     def get_path(self):
  43         if self.hash:
  44             return get_path("art", self.hash)
  45
  46
  47     def add_tags(self, tags, user):
  48         for text in tags.split():
  49             if text[0] == '-':
  50                 # Nega-tags
  51                 tagtext = TagText.get_by(text=text[1:])
  52                 if tagtext:
  53                     tag = Tag.get_by(art=self, tagger=user, tagtext=tagtext)
  54                     if tag:
  55                         elixir.session.delete(tag)
  56
  57             else:
  58                 if len(text) > 50:
  59                     raise "Long Tag!" # can we handle this more gracefully?
  60                 # sqlite seems happy to store strings much longer than the supplied limit...
  61
  62
  63
  64                 # elixir should really have its own find_or_create.
  65                 tagtext = find_or_create(TagText, text=text)
  66                 tag     = find_or_create(Tag, art=self, tagger=user, tagtext=tagtext)
  67
  68
  69     def __unicode__(self):
  70         return self.get_path()
  71
  72
  73 class Tag(Entity):
  74     # look into how ondelete works.  It just sets a database property.
  75     art = ManyToOne('Art', ondelete='cascade')
  76     tagger = ManyToOne('User')
  77     tagtext = ManyToOne('TagText')
  78
  79     # this text setter is no longer useful since I changed the way Art#add_tags works
  80     # but I'll leave it in here just for several minutes nostalgia.
  81     # def set_text(self, text):
  82     #     self.tagtext = TagText.get_by(text=text)
  83     #     if not self.tagtext:
  84     #         self.tagtext = TagText(text=text)
  85     #
  86     # text = property(lambda self: self.tagtext.text, set_text)
  87
  88     def __unicode__(self):
  89         if not self.tagtext:
  90             return "(broken)"
  91         return unicode(self.tagtext)
  92
  93
  94 class TagText(Entity):
  95     text = Field(Unicode(50)) # gotta enforce this somehow
  96     tags = OneToMany('Tag')
  97
  98     def __unicode__(self):
  99         return self.text