make custom pdf optional

[wolnelektury.git] / apps / catalogue / fields.py

diff --git a/apps/catalogue/fields.py b/apps/catalogue/fields.py
index e2d94b9..5ab78eb 100644 (file)
--- a/apps/catalogue/fields.py
+++ b/apps/catalogue/fields.py
@@ -2,125 +2,33 @@
 # This file is part of Wolnelektury, licensed under GNU Affero GPLv3 or later.
 # Copyright © Fundacja Nowoczesna Polska. See NOTICE for more information.
 #
 # 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 import models

-from django.db.models import signals
-from django import forms
-from django.forms.widgets import flatatt
-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):
-    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, connection):
-        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)
-
-
-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).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)
+from django.db.models.fields.files import FieldFile

 
 

-        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']),
-            }
+class OverwritingFieldFile(FieldFile):
+    """
+        Deletes the old file before saving the new one.
+    """

 
 

-        return mark_safe(html)
+    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 JQueryAutoCompleteField(forms.CharField):
-    def __init__(self, source, options=None, *args, **kwargs):
-        if 'widget' not in kwargs:
-            kwargs['widget'] = JQueryAutoCompleteWidget(source, options)
+class OverwritingFileField(models.FileField):
+    attr_class = OverwritingFieldFile

 
 

-        super(JQueryAutoCompleteField, self).__init__(*args, **kwargs)

 
 try:
     # check for south
     from south.modelsinspector import add_introspection_rules
 
 
 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"])
+    add_introspection_rules([], ["^catalogue\.fields\.OverwritingFileField"])

 except ImportError:
     pass
 except ImportError:
     pass