X-Git-Url: https://git.mdrn.pl/wolnelektury.git/blobdiff_plain/0a428c3de0e6bcfc863f105101ec1bdb44bbf9de..23025f539214ffbd82a597d4a1d70808d6e59f31:/apps/catalogue/fields.py
diff --git a/apps/catalogue/fields.py b/apps/catalogue/fields.py
index 55b38cc0a..390fb0359 100644
--- a/apps/catalogue/fields.py
+++ b/apps/catalogue/fields.py
@@ -1,16 +1,15 @@
# -*- coding: utf-8 -*-
+# This file is part of Wolnelektury, licensed under GNU Affero GPLv3 or later.
+# Copyright © Fundacja Nowoczesna Polska. See NOTICE for more information.
+#
import datetime
from django.conf import settings
from django.db import models
-from django.db.models import signals
-from django.dispatch import dispatcher
+from django.db.models.fields.files import FieldFile
from django import forms
-from django.forms.widgets import flatatt
-from django.forms.util import smart_unicode
from django.utils import simplejson as json
-from django.utils.html import escape
-from django.utils.safestring import mark_safe
+from django.utils.translation import ugettext_lazy as _
class JSONEncoder(json.JSONEncoder):
@@ -32,76 +31,65 @@ def loads(str):
return json.loads(str, encoding=settings.DEFAULT_CHARSET)
+class JSONFormField(forms.CharField):
+ widget = forms.Textarea
+
+ def clean(self, value):
+ try:
+ loads(value)
+ return value
+ except ValueError, e:
+ raise forms.ValidationError(_('Enter a valid JSON value. Error: %s') % e)
+
+
class JSONField(models.TextField):
- def db_type(self):
+ def formfield(self, **kwargs):
+ defaults = {'form_class': JSONFormField}
+ defaults.update(kwargs)
+ return super(JSONField, self).formfield(**defaults)
+
+ def db_type(self, connection):
return 'text'
-
+
def get_internal_type(self):
return 'TextField'
- def pre_save(self, model_instance, add):
- value = getattr(model_instance, self.attname, None)
- return dumps(value)
-
def contribute_to_class(self, cls, name):
super(JSONField, self).contribute_to_class(cls, name)
- dispatcher.connect(self.post_init, signal=signals.post_init, sender=cls)
-
- def get_json(model_instance):
- return dumps(getattr(model_instance, self.attname, None))
- setattr(cls, 'get_%s_json' % self.name, get_json)
-
- def set_json(model_instance, json):
- return setattr(model_instance, self.attname, loads(json))
- setattr(cls, 'set_%s_json' % self.name, set_json)
-
- def post_init(self, instance=None):
- value = self.value_from_object(instance)
- if (value):
- setattr(instance, self.attname, loads(value))
- else:
- setattr(instance, self.attname, None)
-
-
-class JQueryAutoCompleteWidget(forms.TextInput):
- def __init__(self, source, options=None, *args, **kwargs):
- self.source = source
- self.options = None
- if options:
- self.options = dumps(options)
- super(JQueryAutoCompleteWidget, self).__init__(*args, **kwargs)
-
- def render_js(self, field_id):
- source = "'%s'" % escape(self.source)
- options = ''
- if self.options:
- options += ', %s' % self.options
-
- return u'$(\'#%s\').autocomplete(%s%s);' % (field_id, source, options)
-
- def render(self, name, value=None, attrs=None):
- final_attrs = self.build_attrs(attrs, name=name)
- if value:
- final_attrs['value'] = smart_unicode(value)
-
- if not self.attrs.has_key('id'):
- final_attrs['id'] = 'id_%s' % name
-
- html = u'''
-
- ''' % {
- 'attrs' : flatatt(final_attrs),
- 'js' : self.render_js(final_attrs['id']),
- }
-
- return mark_safe(html)
-
-
-class JQueryAutoCompleteField(forms.CharField):
- def __init__(self, source, options=None, *args, **kwargs):
- if 'widget' not in kwargs:
- kwargs['widget'] = JQueryAutoCompleteWidget(source, options)
-
- super(JQueryAutoCompleteField, self).__init__(*args, **kwargs)
+ def get_value(model_instance):
+ return loads(getattr(model_instance, self.attname, None))
+ setattr(cls, 'get_%s_value' % self.name, get_value)
+
+ def set_value(model_instance, json):
+ return setattr(model_instance, self.attname, dumps(json))
+ setattr(cls, 'set_%s_value' % self.name, set_value)
+
+
+class OverwritingFieldFile(FieldFile):
+ """
+ Deletes the old file before saving the new one.
+ """
+
+ def save(self, name, content, *args, **kwargs):
+ leave = kwargs.pop('leave', None)
+ # delete if there's a file already and there's a new one coming
+ if not leave and self and (not hasattr(content, 'path') or
+ content.path != self.path):
+ self.delete(save=False)
+ return super(OverwritingFieldFile, self).save(
+ name, content, *args, **kwargs)
+
+
+class OverwritingFileField(models.FileField):
+ attr_class = OverwritingFieldFile
+
+
+try:
+ # check for south
+ from south.modelsinspector import add_introspection_rules
+
+ add_introspection_rules([], ["^catalogue\.fields\.JSONField"])
+ add_introspection_rules([], ["^catalogue\.fields\.OverwritingFileField"])
+except ImportError:
+ pass