src/social/forms.py

   1 # This file is part of Wolnelektury, licensed under GNU Affero GPLv3 or later.
   2 # Copyright © Fundacja Nowoczesna Polska. See NOTICE for more information.
   3 #
   4 from django import forms
   5
   6 from catalogue.models import Book, Tag
   7 from social.utils import get_set
   8
   9
  10 class UserSetsForm(forms.Form):
  11     def __init__(self, book, user, *args, **kwargs):
  12         super(UserSetsForm, self).__init__(*args, **kwargs)
  13         self.fields['set_ids'] = forms.ChoiceField(
  14             choices=[(tag.id, tag.name) for tag in Tag.objects.filter(category='set', user=user).iterator()],
  15         )
  16
  17
  18 class AddSetForm(forms.Form):
  19     name = forms.CharField(max_length=50)
  20     book = forms.IntegerField()
  21
  22     def save(self, user):
  23         name = self.cleaned_data['name'].strip()
  24         if not name: return
  25         tag = get_set(user, name)
  26         try:
  27             book = Book.objects.get(id=self.cleaned_data['book'])
  28         except Book.DoesNotExist:
  29             return
  30
  31         try:
  32             book.tag_relations.create(tag=tag)
  33         except:
  34             pass
  35
  36         return book, tag
  37
  38
  39 class RemoveSetForm(forms.Form):
  40     slug = forms.CharField(max_length=50)
  41     book = forms.IntegerField()
  42
  43     def save(self, user):
  44         slug = self.cleaned_data['slug']
  45         try:
  46             tag = Tag.objects.get(user=user, slug=slug)
  47         except Tag.DoesNotExist:
  48             return
  49         try:
  50             book = Book.objects.get(id=self.cleaned_data['book'])
  51         except Book.DoesNotExist:
  52             return
  53
  54         try:
  55             book.tag_relations.filter(tag=tag).delete()
  56         except:
  57             pass
  58
  59         return book, tag