forum/settings/forms.py

   1 import os
   2 from string import strip
   3 from django import forms
   4 from forum.settings.base import Setting
   5 from django.utils.translation import ugettext as _
   6 from django.core.files.storage import FileSystemStorage
   7
   8 class DummySetting:
   9     pass
  10
  11 class UnfilteredField(forms.CharField):
  12     def clean(self, value):
  13             return value
  14
  15
  16 class SettingsSetForm(forms.Form):
  17     def __init__(self, set, data=None, unsaved=None, *args, **kwargs):
  18         initial = dict([(setting.name, setting.value) for setting in set])
  19
  20         if unsaved:
  21             initial.update(unsaved)
  22
  23         super(SettingsSetForm, self).__init__(data, initial=initial, *args, **kwargs)
  24
  25         for setting in set:
  26             widget = setting.field_context.get('widget', None)
  27
  28             if widget is forms.CheckboxSelectMultiple or widget is forms.SelectMultiple or isinstance(widget, forms.SelectMultiple):
  29                 field = forms.MultipleChoiceField(**setting.field_context)
  30             elif widget is forms.RadioSelect or isinstance(widget, forms.RadioSelect):
  31                 field = forms.ChoiceField(**setting.field_context)
  32             elif isinstance(setting, (Setting.emulators.get(str, DummySetting), Setting.emulators.get(unicode, DummySetting))):
  33                 if not setting.field_context.get('widget', None):
  34                     setting.field_context['widget'] = forms.TextInput(attrs={'class': 'longstring'})
  35                 field = forms.CharField(**setting.field_context)
  36             elif isinstance(setting, Setting.emulators.get(float, DummySetting)):
  37                 field = forms.FloatField(**setting.field_context)
  38             elif isinstance(setting, Setting.emulators.get(int, DummySetting)):
  39                 field = forms.IntegerField(**setting.field_context)
  40             elif isinstance(setting, Setting.emulators.get(bool, DummySetting)):
  41                 field = forms.BooleanField(**setting.field_context)
  42             else:
  43                 field = UnfilteredField(**setting.field_context)
  44
  45             self.fields[setting.name] = field
  46
  47         self.set = set
  48
  49     def as_table(self):
  50         return self._html_output(
  51                 u'<tr><th>%(label)s' + ('<br /><a class="fieldtool context" href="#">%s</a><span class="sep">|</span><a class="fieldtool default" href="#">%s</a></th>' % (
  52                     _('context'), _('default'))) + u'<td>%(errors)s%(field)s%(help_text)s</td>',
  53                 u'<tr><td colspan="2">%s</td></tr>', '</td></tr>', u'<br />%s', False)
  54
  55     def save(self):
  56         for setting in self.set:
  57             setting.set_value(self.cleaned_data[setting.name])
  58
  59 class ImageFormWidget(forms.Widget):
  60     def render(self, name, value, attrs=None):
  61         return """
  62             <img src="%(value)s" /><br />
  63             %(change)s: <input type="file" name="%(name)s" />
  64             <input type="hidden" name="%(name)s_old" value="%(value)s" />
  65             """ % {'name': name, 'value': value, 'change': _('Change this:')}
  66
  67     def value_from_datadict(self, data, files, name):
  68         if name in files:
  69             f = files[name]
  70
  71             # check file type
  72             file_name_suffix = os.path.splitext(f.name)[1].lower()
  73
  74             if not file_name_suffix in ('.jpg', '.jpeg', '.gif', '.png', '.bmp', '.tiff', '.ico'):
  75                 raise Exception('File type not allowed')
  76
  77             from forum.settings import UPFILES_FOLDER, UPFILES_ALIAS
  78
  79             storage = FileSystemStorage(str(UPFILES_FOLDER), str(UPFILES_ALIAS))
  80             new_file_name = storage.save(f.name, f)
  81             return str(UPFILES_ALIAS) + new_file_name
  82         else:
  83             if "%s_old" % name in data:
  84                 return data["%s_old" % name]
  85             elif name in data:
  86                 return data[name]
  87
  88 class StringListWidget(forms.Widget):
  89     def render(self, name, value, attrs=None):
  90         ret = ""
  91         for s in value:
  92             ret += """
  93             <div class="string-list-input">
  94                 <input type="text" name="%(name)s" value="%(value)s" />
  95                 <button class="string_list_widget_button">-</button>
  96             </div>
  97             """  % {'name': name, 'value': s}
  98
  99         return """
 100             <div class="string_list_widgets">
 101                 %(ret)s
 102                 <div><button name="%(name)s" class="string_list_widget_button add">+</button></div>
 103             </div>
 104             """ % dict(name=name, ret=ret)
 105
 106     def value_from_datadict(self, data, files, name):
 107         if 'submit' in data:
 108             return data.getlist(name)
 109         else:
 110             return data[name]
 111
 112 class CommaStringListWidget(forms.Textarea):
 113     def render(self, name, value, attrs=None):
 114         return super(CommaStringListWidget, self).render(name, ', '.join(value), attrs)
 115
 116
 117     def value_from_datadict(self, data, files, name):
 118         if 'submit' in data:
 119             return map(strip, data[name].split(','))
 120         else:
 121             return ', '.join(data[name])
 122
 123
 124
 125
 126