# -*- 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 functools import wraps
from django.conf import settings
from django.db import models
+from django.db.models.fields.files import FieldFile
from django.db.models import signals
-from django.dispatch import dispatcher
from django import forms
from django.forms.widgets import flatatt
-from django.forms.util import smart_unicode
+from django.utils.encoding 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):
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 get_value(model_instance):
+ return loads(getattr(model_instance, self.attname, None))
+ setattr(cls, 'get_%s_value' % self.name, get_value)
- 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)
+ def set_value(model_instance, json):
+ return setattr(model_instance, self.attname, dumps(json))
+ setattr(cls, 'set_%s_value' % self.name, set_value)
class JQueryAutoCompleteWidget(forms.TextInput):
- def __init__(self, source, options=None, *args, **kwargs):
- self.source = source
- self.options = None
- if options:
- self.options = dumps(options)
+ def __init__(self, options, *args, **kwargs):
+ 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'$(\'#%s\').autocomplete(%s%s);' % (field_id, source, options)
-
+
+ def render_js(self, field_id, options):
+ return u'$(\'#%s\').autocomplete(%s).result(autocomplete_result_handler);' % (field_id, 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">//<!--
%(js)s//--></script>
''' % {
- 'attrs' : flatatt(final_attrs),
- 'js' : self.render_js(final_attrs['id']),
+ 'attrs': flatatt(final_attrs),
+ 'js' : self.render_js(final_attrs['id'], self.options),
}
-
+
return mark_safe(html)
+class JQueryAutoCompleteSearchWidget(JQueryAutoCompleteWidget):
+ def __init__(self, *args, **kwargs):
+ super(JQueryAutoCompleteSearchWidget, self).__init__(*args, **kwargs)
+
+ def render_js(self, field_id, options):
+ return u""
+
+
class JQueryAutoCompleteField(forms.CharField):
- def __init__(self, source, options=None, *args, **kwargs):
+ def __init__(self, source, options={}, *args, **kwargs):
if 'widget' not in kwargs:
- kwargs['widget'] = JQueryAutoCompleteWidget(source, options)
-
+ options['source'] = source
+ kwargs['widget'] = JQueryAutoCompleteWidget(options)
+
super(JQueryAutoCompleteField, self).__init__(*args, **kwargs)
+
+class JQueryAutoCompleteSearchField(forms.CharField):
+ def __init__(self, options={}, *args, **kwargs):
+ if 'widget' not in kwargs:
+ kwargs['widget'] = JQueryAutoCompleteSearchWidget(options)
+
+ super(JQueryAutoCompleteSearchField, self).__init__(*args, **kwargs)
+
+
+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
fnp / wolnelektury.git / blobdiff