#1744: go back after chunk edit,
[redakcja.git] / apps / catalogue / forms.py
1 # -*- coding: utf-8 -*-
2 #
3 # This file is part of FNP-Redakcja, licensed under GNU Affero GPLv3 or later.
4 # Copyright © Fundacja Nowoczesna Polska. See NOTICE for more information.
5 #
6 from django.contrib.auth.models import User
7 from django.db.models import Count
8 from django import forms
9 from django.utils.translation import ugettext_lazy as _
10
11 from catalogue.constants import MASTERS
12 from catalogue.models import Book, Chunk
13
14 class DocumentCreateForm(forms.ModelForm):
15     """
16         Form used for creating new documents.
17     """
18     file = forms.FileField(required=False)
19     text = forms.CharField(required=False, widget=forms.Textarea)
20
21     class Meta:
22         model = Book
23         exclude = ['gallery', 'parent', 'parent_number']
24         prepopulated_fields = {'slug': ['title']}
25
26     def clean(self):
27         super(DocumentCreateForm, self).clean()
28         file = self.cleaned_data['file']
29
30         if file is not None:
31             try:
32                 self.cleaned_data['text'] = file.read().decode('utf-8')
33             except UnicodeDecodeError:
34                 raise forms.ValidationError("Text file must be UTF-8 encoded.")
35
36         if not self.cleaned_data["text"]:
37             raise forms.ValidationError("You must either enter text or upload a file")
38
39         return self.cleaned_data
40
41
42 class DocumentsUploadForm(forms.Form):
43     """
44         Form used for uploading new documents.
45     """
46     file = forms.FileField(required=True, label=_('ZIP file'))
47     dirs = forms.BooleanField(label=_('Directories are documents in chunks'),
48             widget = forms.CheckboxInput(attrs={'disabled':'disabled'}))
49
50     def clean(self):
51         file = self.cleaned_data['file']
52
53         import zipfile
54         try:
55             z = self.cleaned_data['zip'] = zipfile.ZipFile(file)
56         except zipfile.BadZipfile:
57             raise forms.ValidationError("Should be a ZIP file.")
58         if z.testzip():
59             raise forms.ValidationError("ZIP file corrupt.")
60
61         return self.cleaned_data
62
63
64 class ChunkForm(forms.ModelForm):
65     """
66         Form used for editing a chunk.
67     """
68     user = forms.ModelChoiceField(queryset=
69         User.objects.annotate(count=Count('chunk')).
70         order_by('-count', 'last_name', 'first_name'), required=False,
71         label=_('Assigned to'))
72
73     class Meta:
74         model = Chunk
75         exclude = ['number']
76
77     def clean_slug(self):
78         slug = self.cleaned_data['slug']
79         try:
80             chunk = Chunk.objects.get(book=self.instance.book, slug=slug)
81         except Chunk.DoesNotExist:
82             return slug
83         if chunk == self.instance:
84             return slug
85         raise forms.ValidationError(_('Chunk with this slug already exists'))
86
87
88 class ChunkAddForm(ChunkForm):
89     """
90         Form used for adding a chunk to a document.
91     """
92
93     def clean_slug(self):
94         slug = self.cleaned_data['slug']
95         try:
96             user = Chunk.objects.get(book=self.instance.book, slug=slug)
97         except Chunk.DoesNotExist:
98             return slug
99         raise forms.ValidationError(_('Chunk with this slug already exists'))
100
101
102 class BookAppendForm(forms.Form):
103     """
104         Form for appending a book to another book.
105         It means moving all chunks from book A to book B and deleting A.
106     """
107     append_to = forms.ModelChoiceField(queryset=Book.objects.all(),
108             label=_("Append to"))
109
110     def __init__(self, book, *args, **kwargs):
111         ret =  super(BookAppendForm, self).__init__(*args, **kwargs)
112         self.fields['append_to'].queryset = Book.objects.exclude(pk=book.pk)
113         return ret
114
115
116 class BookForm(forms.ModelForm):
117     """
118         Form used for editing a Book.
119     """
120
121     class Meta:
122         model = Book
123
124
125 class ChooseMasterForm(forms.Form):
126     """
127         Form used for fixing the chunks in a book.
128     """
129
130     master = forms.ChoiceField(choices=((m, m) for m in MASTERS))