old_contents: import os
  
  from django.db import models
  from django.contrib.auth.models import User
  from django.conf import settings
  from django.utils.translation import gettext_lazy as _
  
  from explorer import fields
  
  
  class EditorSettings(models.Model):
      user = models.ForeignKey(User, unique=True)
      settings = fields.JSONField()
      
      class Meta:
          verbose_name, verbose_name_plural = _("editor settings"), _("editor settings")
  
      def __unicode__(self):
          return u"Editor settings for %s" % self.user.username
  
  
  class Book(models.Model):
      class Meta:
          permissions = (
              ("can_add_files", "Can do hg add."),
          )
      pass
  
  
  class PullRequest(models.Model):
      comitter = models.ForeignKey(User) # the user who request the pull 
      file = models.CharField(max_length=256) # the file to request
      source_rev = models.CharField(max_length=40) # revision number of the commiter
  
      comment = models.TextField() # addtional comments to the request
  
      # revision number in which the changes were merged (if any)
      merged_rev = models.CharField(max_length=40, null=True) 
      
      def __unicode__(self):
          return u"Pull request from %s, source: %s %s, status: %s." % \
              (self.commiter, self.file, self.source_rev, \
                  (("merged into "+self.merged_rev) if self.merged_rev else "pending") )
  
      
  def get_image_folders():
      return sorted(fn for fn in os.listdir(os.path.join(settings.MEDIA_ROOT, settings.IMAGE_DIR)) if not fn.startswith('.'))
  
  
  def get_images_from_folder(folder):
      return sorted(settings.MEDIA_URL + settings.IMAGE_DIR + '/' + folder + '/' + fn for fn 
              in os.listdir(os.path.join(settings.MEDIA_ROOT, settings.IMAGE_DIR, folder))
              if not fn.startswith('.'))
  
  
new_contents: import os
  
  from django.db import models
  from django.contrib.auth.models import User
  from django.conf import settings
  from django.utils.translation import gettext_lazy as _
  
  from explorer import fields
  
  
  class EditorSettings(models.Model):
      user = models.ForeignKey(User, unique=True)
      settings = fields.JSONField()
      
      class Meta:
          verbose_name, verbose_name_plural = _("editor settings"), _("editor settings")
  
      def __unicode__(self):
          return u"Editor settings for %s" % self.user.username
  
  
  class Book(models.Model):
      class Meta:
          permissions = (
              ("can_add_files", "Can do hg add."),
          )
      pass
  
  
  class PullRequest(models.Model):
      comitter = models.ForeignKey(User) # the user who request the pull 
      file = models.CharField(max_length=256) # the file to request
      source_rev = models.CharField(max_length=40) # revision number of the commiter
  
      comment = models.TextField() # addtional comments to the request
  
      # revision number in which the changes were merged (if any)
      merged_rev = models.CharField(max_length=40, null=True) 
      
      def __unicode__(self):
          return u"Pull request from %s, source: %s %s, status: %s." % \
              (self.commiter, self.file, self.source_rev, \
                  (("merged into "+self.merged_rev) if self.merged_rev else "pending") )
  
      
  def get_image_folders():
      return sorted(fn for fn in os.listdir(os.path.join(settings.MEDIA_ROOT, settings.IMAGE_DIR)) if not fn.startswith('.'))
  
  
  def get_images_from_folder(folder):
      return sorted(settings.MEDIA_URL + settings.IMAGE_DIR + u'/' + folder + u'/' + fn.decode('utf-8') for fn
              in os.listdir(os.path.join(settings.MEDIA_ROOT, settings.IMAGE_DIR, folder))
              if not fn.decode('utf-8').startswith('.'))
  
  
subject: Patch to handle unicode image names.