apps/explorer/forms.py

   1 from django import forms
   2
   3 from lxml import etree
   4 from librarian import dcparser
   5 import django.utils
   6
   7 from explorer import models
   8
   9 class PersonField(forms.CharField):
  10     def clean(self, value):
  11         try:
  12             return dcparser.Person.from_text( super(PersonField, self).clean(value) )
  13         except ValueError, e:
  14             raise django.utils.ValidationError(e.message)
  15
  16 def person_conv(value):
  17     if isinstance(value, dcparser.Person):
  18         return value
  19     elif isinstance(value, basestring):
  20         return dcparser.Person.from_text( unicode(value) )
  21     else:
  22         raise ValueError("Can't convert '%s' to Person object." % value)
  23
  24 class ListField(forms.Field):
  25     def __init__(self, *args, **kwargs):
  26         self.convert = kwargs.pop('converter', unicode)
  27         if not kwargs.has_key('widget'):
  28             kwargs['widget'] = forms.Textarea
  29         super(ListField, self).__init__(*args, **kwargs)
  30
  31     def _get_initial(self):
  32         return self._initial and (u'\n'.join( ( unicode(person) for person in self._initial)))
  33
  34     def _set_initial(self, value):
  35         if value is None:
  36             self._initial = None
  37         elif isinstance(value, list):
  38             self._initial = [ self.convert(e) for e in value ]
  39         elif isinstance(value, basestring):
  40             self._initial = [ self.convert(e) for e in value.split('\n') ]
  41         else:
  42             raise ValueError("Invalid value. Must be a list of dcparser.Person or string")
  43
  44     initial = property(_get_initial, _set_initial)
  45
  46     def clean(self, value):
  47         super(ListField, self).clean(value)
  48         elems = value.split('\n')
  49         try:
  50             return [self.convert(el) for el in elems]
  51         except ValueError, err:
  52             raise django.utils.ValidationError(err.message)
  53
  54 class BookForm(forms.Form):
  55     content = forms.CharField(widget=forms.Textarea)
  56     commit_message = forms.CharField(required=False)
  57
  58 class BookUploadForm(forms.Form):
  59     file = forms.FileField()
  60
  61 class ImageFoldersForm(forms.Form):
  62     folders = forms.ChoiceField(required=False)
  63
  64     def __init__(self, *args, **kwargs):
  65         super(ImageFoldersForm, self).__init__(*args, **kwargs)
  66         self.fields['folders'].choices = [('', '-- Wybierz folder z obrazkami --')] + [(fn, fn) for fn in models.get_image_folders()]
  67
  68 class DublinCoreForm(forms.Form):
  69     about = forms.URLField(verify_exists=False)
  70     author = PersonField()
  71     title = forms.CharField()
  72     epochs = ListField()
  73     kinds = ListField()
  74     genres = ListField()
  75     created_at = forms.DateField()
  76     released_to_public_domain_at = forms.DateField()
  77     editors = ListField(widget=forms.Textarea, required=False, converter=person_conv)
  78     translators = ListField(widget=forms.Textarea, required=False, converter=person_conv)
  79     technical_editors = ListField(widget=forms.Textarea, required=False, converter=person_conv)
  80     publisher = forms.CharField()
  81     source_name = forms.CharField(widget=forms.Textarea)
  82     source_url = forms.URLField(verify_exists=False)
  83     url = forms.URLField(verify_exists=False)
  84     parts = forms.CharField(widget=forms.Textarea, required=False)
  85     license = forms.CharField(required=False)
  86     license_description = forms.CharField(widget=forms.Textarea, required=False)
  87
  88     commit_message = forms.CharField(required=False, widget=forms.HiddenInput)
  89
  90     def __init__(self, *args, **kwargs):
  91         info = kwargs.pop('info', None)
  92         super(DublinCoreForm, self).__init__(*args, **kwargs)
  93
  94         if isinstance(info, dcparser.BookInfo):
  95             vdict = info.to_dict()
  96             for name in self.fields.keys():
  97                 if vdict.has_key(name):
  98                     self.fields[name].initial = vdict[name]