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