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 catalogue.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, Template
  13
  14 class DocumentCreateForm(forms.ModelForm):
  15     """
  16         Form used for creating new documents.
  17     """
  18     file = forms.FileField(required=False)
  19     template = forms.ModelChoiceField(Template.objects, required=False)
  20     text = forms.CharField(required=False, widget=forms.Textarea)
  21
  22     class Meta:
  23         model = Book
  24         exclude = ['parent', 'parent_number', 'project']
  25
  26     def __init__(self, *args, **kwargs):
  27         super(DocumentCreateForm, self).__init__(*args, **kwargs)
  28         self.fields['slug'].widget.attrs={'class': 'autoslug'}
  29         self.fields['gallery'].widget.attrs={'class': 'autoslug'}
  30         self.fields['title'].widget.attrs={'class': 'autoslug-source'}
  31         self.fields['template'].queryset = Template.objects.filter(is_main=True)
  32
  33     def clean(self):
  34         super(DocumentCreateForm, self).clean()
  35         file = self.cleaned_data['file']
  36         template = self.cleaned_data['template']
  37
  38         if file is not None:
  39             try:
  40                 self.cleaned_data['text'] = file.read().decode('utf-8')
  41             except UnicodeDecodeError:
  42                 raise forms.ValidationError(_("Text file must be UTF-8 encoded."))
  43         elif template is not None:
  44             self.cleaned_data['text'] = template.content
  45
  46         if not self.cleaned_data["text"]:
  47             self._errors["file"] = self.error_class([_("You must enter text, upload a file or select a template")])
  48
  49         return self.cleaned_data
  50
  51
  52 class DocumentsUploadForm(forms.Form):
  53     """
  54         Form used for uploading new documents.
  55     """
  56     file = forms.FileField(required=True, label=_('ZIP file'))
  57     dirs = forms.BooleanField(label=_('Directories are documents in chunks'),
  58             widget = forms.CheckboxInput(attrs={'disabled':'disabled'}))
  59
  60     def clean(self):
  61         file = self.cleaned_data['file']
  62
  63         import zipfile
  64         try:
  65             z = self.cleaned_data['zip'] = zipfile.ZipFile(file)
  66         except zipfile.BadZipfile:
  67             raise forms.ValidationError("Should be a ZIP file.")
  68         if z.testzip():
  69             raise forms.ValidationError("ZIP file corrupt.")
  70
  71         return self.cleaned_data
  72
  73
  74 class ChunkForm(forms.ModelForm):
  75     """
  76         Form used for editing a chunk.
  77     """
  78     user = forms.ModelChoiceField(queryset=
  79         User.objects.annotate(count=Count('chunk')).
  80         order_by('last_name', 'first_name'), required=False,
  81         label=_('Assigned to'))
  82
  83     class Meta:
  84         model = Chunk
  85         fields = ['title', 'slug', 'gallery_start', 'user', 'stage']
  86         exclude = ['number']
  87
  88     def __init__(self, *args, **kwargs):
  89         super(ChunkForm, self).__init__(*args, **kwargs)
  90         self.fields['gallery_start'].widget.attrs={'class': 'number-input'}
  91         self.fields['slug'].widget.attrs={'class': 'autoslug'}
  92         self.fields['title'].widget.attrs={'class': 'autoslug-source'}
  93
  94     def clean_slug(self):
  95         slug = self.cleaned_data['slug']
  96         try:
  97             chunk = Chunk.objects.get(book=self.instance.book, slug=slug)
  98         except Chunk.DoesNotExist:
  99             return slug
 100         if chunk == self.instance:
 101             return slug
 102         raise forms.ValidationError(_('Chunk with this slug already exists'))
 103
 104
 105 class ChunkAddForm(ChunkForm):
 106     """
 107         Form used for adding a chunk to a document.
 108     """
 109
 110     def clean_slug(self):
 111         slug = self.cleaned_data['slug']
 112         try:
 113             user = Chunk.objects.get(book=self.instance.book, slug=slug)
 114         except Chunk.DoesNotExist:
 115             return slug
 116         raise forms.ValidationError(_('Chunk with this slug already exists'))
 117
 118
 119 class BookAppendForm(forms.Form):
 120     """
 121         Form for appending a book to another book.
 122         It means moving all chunks from book A to book B and deleting A.
 123     """
 124     append_to = forms.ModelChoiceField(queryset=Book.objects.all(),
 125             label=_("Append to"))
 126
 127     def __init__(self, book, *args, **kwargs):
 128         ret =  super(BookAppendForm, self).__init__(*args, **kwargs)
 129         self.fields['append_to'].queryset = Book.objects.exclude(pk=book.pk)
 130         return ret
 131
 132
 133 class BookForm(forms.ModelForm):
 134     """Form used for editing a Book."""
 135
 136     class Meta:
 137         model = Book
 138         exclude = ['project']
 139
 140     def __init__(self, *args, **kwargs):
 141         ret = super(BookForm, self).__init__(*args, **kwargs)
 142         self.fields['slug'].widget.attrs.update({"class": "autoslug"})
 143         self.fields['title'].widget.attrs.update({"class": "autoslug-source"})
 144         return ret
 145
 146
 147 class ReadonlyBookForm(BookForm):
 148     """Form used for not editing a Book."""
 149
 150     def __init__(self, *args, **kwargs):
 151         ret = super(ReadonlyBookForm, self).__init__(*args, **kwargs)
 152         for field in self.fields.values():
 153             field.widget.attrs.update({"readonly": True})
 154         return ret
 155
 156
 157 class ChooseMasterForm(forms.Form):
 158     """
 159         Form used for fixing the chunks in a book.
 160     """
 161
 162     master = forms.ChoiceField(choices=((m, m) for m in MASTERS))