+
+
+class ChunkForm(forms.ModelForm):
+ """
+ Form used for editing a chunk.
+ """
+ user = forms.ModelChoiceField(queryset=
+ User.objects.annotate(count=Count('document')).
+ order_by('-count', 'last_name', 'first_name'))
+
+
+ class Meta:
+ model = Chunk
+ exclude = ['number']
+
+ def clean_slug(self):
+ slug = self.cleaned_data['slug']
+ try:
+ chunk = Chunk.objects.get(book=self.instance.book, slug=slug)
+ except Chunk.DoesNotExist:
+ return slug
+ if chunk == self.instance:
+ return slug
+ raise forms.ValidationError(_('Chunk with this slug already exists'))
+
+
+class ChunkAddForm(ChunkForm):
+ """
+ Form used for adding a chunk to a document.
+ """
+
+ def clean_slug(self):
+ slug = self.cleaned_data['slug']
+ try:
+ user = Chunk.objects.get(book=self.instance.book, slug=slug)
+ except Chunk.DoesNotExist:
+ return slug
+ raise forms.ValidationError(_('Chunk with this slug already exists'))
+
+
+
+
+class BookAppendForm(forms.Form):
+ """
+ Form for appending a book to another book.
+ It means moving all chunks from book A to book B and deleting A.
+ """
+
+ append_to = forms.ModelChoiceField(queryset=Book.objects.all(),
+ label=_("Append to"))
+
+
+class BookForm(forms.ModelForm):
+ """
+ Form used for editing a Book.
+ """
+
+ class Meta:
+ model = Book
+
+
+class ChooseMasterForm(forms.Form):
+ """
+ Form used for fixing the chunks in a book.
+ """
+
+ master = forms.ChoiceField(choices=((m, m) for m in MASTERS))