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 = ['parent', 'parent_number']
  24
  25     def __init__(self, *args, **kwargs):
  26         super(DocumentCreateForm, self).__init__(*args, **kwargs)
  27         self.fields['slug'].widget.attrs={'class': 'autoslug'}
  28         self.fields['gallery'].widget.attrs={'class': 'autoslug'}
  29         self.fields['title'].widget.attrs={'class': 'autoslug-source'}
  30
  31     def clean(self):
  32         super(DocumentCreateForm, self).clean()
  33         file = self.cleaned_data['file']
  34
  35         if file is not None:
  36             try:
  37                 self.cleaned_data['text'] = file.read().decode('utf-8')
  38             except UnicodeDecodeError:
  39                 raise forms.ValidationError(_("Text file must be UTF-8 encoded."))
  40
  41         if not self.cleaned_data["text"]:
  42             self._errors["file"] = self.error_class([_("You must either enter text or upload a file")])
  43
  44         return self.cleaned_data
  45
  46
  47 class DocumentsUploadForm(forms.Form):
  48     """
  49         Form used for uploading new documents.
  50     """
  51     file = forms.FileField(required=True, label=_('ZIP file'))
  52     dirs = forms.BooleanField(label=_('Directories are documents in chunks'),
  53             widget = forms.CheckboxInput(attrs={'disabled':'disabled'}))
  54
  55     def clean(self):
  56         file = self.cleaned_data['file']
  57
  58         import zipfile
  59         try:
  60             z = self.cleaned_data['zip'] = zipfile.ZipFile(file)
  61         except zipfile.BadZipfile:
  62             raise forms.ValidationError("Should be a ZIP file.")
  63         if z.testzip():
  64             raise forms.ValidationError("ZIP file corrupt.")
  65
  66         return self.cleaned_data
  67
  68
  69 class ChunkForm(forms.ModelForm):
  70     """
  71         Form used for editing a chunk.
  72     """
  73     user = forms.ModelChoiceField(queryset=
  74         User.objects.annotate(count=Count('chunk')).
  75         order_by('-count', 'last_name', 'first_name'), required=False,
  76         label=_('Assigned to'))
  77
  78     class Meta:
  79         model = Chunk
  80         fields = ['title', 'slug', 'user', 'stage']
  81         exclude = ['number']
  82
  83     def __init__(self, *args, **kwargs):
  84         super(ChunkForm, self).__init__(*args, **kwargs)
  85         self.fields['slug'].widget.attrs={'class': 'autoslug'}
  86         self.fields['title'].widget.attrs={'class': 'autoslug-source'}
  87
  88     def clean_slug(self):
  89         slug = self.cleaned_data['slug']
  90         try:
  91             chunk = Chunk.objects.get(book=self.instance.book, slug=slug)
  92         except Chunk.DoesNotExist:
  93             return slug
  94         if chunk == self.instance:
  95             return slug
  96         raise forms.ValidationError(_('Chunk with this slug already exists'))
  97
  98
  99 class ChunkAddForm(ChunkForm):
 100     """
 101         Form used for adding a chunk to a document.
 102     """
 103
 104     def clean_slug(self):
 105         slug = self.cleaned_data['slug']
 106         try:
 107             user = Chunk.objects.get(book=self.instance.book, slug=slug)
 108         except Chunk.DoesNotExist:
 109             return slug
 110         raise forms.ValidationError(_('Chunk with this slug already exists'))
 111
 112
 113 class BookAppendForm(forms.Form):
 114     """
 115         Form for appending a book to another book.
 116         It means moving all chunks from book A to book B and deleting A.
 117     """
 118     append_to = forms.ModelChoiceField(queryset=Book.objects.all(),
 119             label=_("Append to"))
 120
 121     def __init__(self, book, *args, **kwargs):
 122         ret =  super(BookAppendForm, self).__init__(*args, **kwargs)
 123         self.fields['append_to'].queryset = Book.objects.exclude(pk=book.pk)
 124         return ret
 125
 126
 127 class BookForm(forms.ModelForm):
 128     """Form used for editing a Book."""
 129
 130     class Meta:
 131         model = Book
 132
 133     def __init__(self, *args, **kwargs):
 134         ret = super(BookForm, self).__init__(*args, **kwargs)
 135         self.fields['slug'].widget.attrs.update({"class": "autoslug"})
 136         self.fields['title'].widget.attrs.update({"class": "autoslug-source"})
 137         return ret
 138
 139
 140 class ReadonlyBookForm(BookForm):
 141     """Form used for not editing a Book."""
 142
 143     def __init__(self, *args, **kwargs):
 144         ret = super(ReadonlyBookForm, self).__init__(*args, **kwargs)
 145         for field in self.fields.values():
 146             field.widget.attrs.update({"readonly": True})
 147         return ret
 148
 149
 150 class ChooseMasterForm(forms.Form):
 151     """
 152         Form used for fixing the chunks in a book.
 153     """
 154
 155     master = forms.ChoiceField(choices=((m, m) for m in MASTERS))