# -*- 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 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.simplejson import dumps
+from django.utils.translation import ugettext_lazy as _
+from south.modelsinspector import add_introspection_rules
+
+
+class JSONEncoder(json.JSONEncoder):
+ def default(self, obj):
+ if isinstance(obj, datetime.datetime):
+ return obj.strftime('%Y-%m-%d %H:%M:%S')
+ elif isinstance(obj, datetime.date):
+ return obj.strftime('%Y-%m-%d')
+ elif isinstance(obj, datetime.time):
+ return obj.strftime('%H:%M:%S')
+ return json.JSONEncoder.default(self, obj)
+
+
+def dumps(data):
+ return JSONEncoder().encode(data)
+
+
+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 formfield(self, **kwargs):
+ defaults = {'form_class': JSONFormField}
+ defaults.update(kwargs)
+ return super(JSONField, self).formfield(**defaults)
+
+ def db_type(self):
+ return 'text'
+
+ def get_internal_type(self):
+ return 'TextField'
+
+ def contribute_to_class(self, cls, name):
+ super(JSONField, self).contribute_to_class(cls, name)
+
+ 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)
+
+add_introspection_rules([], ["^catalogue\.fields\.JSONField"])
class JQueryAutoCompleteWidget(forms.TextInput):
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'$(\'#%s\').autocomplete(%s%s);' % (field_id, source, options)
-
+
+ return u'$(\'#%s\').autocomplete(%s%s).result(autocomplete_result_handler);' % (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'''<input type="text" %(attrs)s/>
- <script type="text/javascript"><!--//
+ <script type="text/javascript">//<!--
%(js)s//--></script>
''' % {
'attrs' : flatatt(final_attrs),
'js' : self.render_js(final_attrs['id']),
}
-
+
return mark_safe(html)
def __init__(self, source, options=None, *args, **kwargs):
if 'widget' not in kwargs:
kwargs['widget'] = JQueryAutoCompleteWidget(source, options)
-
+
super(JQueryAutoCompleteField, self).__init__(*args, **kwargs)
+try:
+ # check for south
+ from south.modelsinspector import add_introspection_rules
+
+ add_introspection_rules([
+ (
+ [JSONField], # Class(es) these apply to
+ [], # Positional arguments (not used)
+ {}, # Keyword argument
+ ), ], ["^catalogue\.fields\.JSONField"])
+except ImportError:
+ pass