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         fields = ['title', 'slug', 'user', 'stage']
  76         exclude = ['number']
  77
  78     def __init__(self, *args, **kwargs):
  79         super(ChunkForm, self).__init__(*args, **kwargs)
  80         self.fields['slug'].widget.attrs={'class': 'autoslug'}
  81         self.fields['title'].widget.attrs={'class': 'autoslug-source'}
  82
  83     def clean_slug(self):
  84         slug = self.cleaned_data['slug']
  85         try:
  86             chunk = Chunk.objects.get(book=self.instance.book, slug=slug)
  87         except Chunk.DoesNotExist:
  88             return slug
  89         if chunk == self.instance:
  90             return slug
  91         raise forms.ValidationError(_('Chunk with this slug already exists'))
  92
  93
  94 class ChunkAddForm(ChunkForm):
  95     """
  96         Form used for adding a chunk to a document.
  97     """
  98
  99     def clean_slug(self):
 100         slug = self.cleaned_data['slug']
 101         try:
 102             user = Chunk.objects.get(book=self.instance.book, slug=slug)
 103         except Chunk.DoesNotExist:
 104             return slug
 105         raise forms.ValidationError(_('Chunk with this slug already exists'))
 106
 107
 108 class BookAppendForm(forms.Form):
 109     """
 110         Form for appending a book to another book.
 111         It means moving all chunks from book A to book B and deleting A.
 112     """
 113     append_to = forms.ModelChoiceField(queryset=Book.objects.all(),
 114             label=_("Append to"))
 115
 116     def __init__(self, book, *args, **kwargs):
 117         ret =  super(BookAppendForm, self).__init__(*args, **kwargs)
 118         self.fields['append_to'].queryset = Book.objects.exclude(pk=book.pk)
 119         return ret
 120
 121
 122 class BookForm(forms.ModelForm):
 123     """Form used for editing a Book."""
 124
 125     class Meta:
 126         model = Book
 127
 128     def __init__(self, *args, **kwargs):
 129         ret = super(BookForm, self).__init__(*args, **kwargs)
 130         self.fields['slug'].widget.attrs.update({"class": "autoslug"})
 131         self.fields['title'].widget.attrs.update({"class": "autoslug-source"})
 132         return ret
 133
 134
 135 class ReadonlyBookForm(BookForm):
 136     """Form used for not editing a Book."""
 137
 138     def __init__(self, *args, **kwargs):
 139         ret = super(ReadonlyBookForm, self).__init__(*args, **kwargs)
 140         for field in self.fields.values():
 141             field.widget.attrs.update({"readonly": True})
 142         return ret
 143
 144
 145 class ChooseMasterForm(forms.Form):
 146     """
 147         Form used for fixing the chunks in a book.
 148     """
 149
 150     master = forms.ChoiceField(choices=((m, m) for m in MASTERS))