old_contents: # -*- coding: utf-8 -*-
  from __future__ import unicode_literals
  
  from django.db import migrations, models
  from django.core.management.sql import emit_post_migrate_signal
  from molo.core.models import MoloMedia, ArticlePage
  from wagtailmedia.models import Media
  
  
  def convert_media_to_molo_media(apps, schema_editor):
      db_alias = schema_editor.connection.alias
      try:
          # Django 1.9
          emit_post_migrate_signal(2, False, db_alias)
      except TypeError:
          # Django < 1.9
          try:
              # Django 1.8
              emit_post_migrate_signal(2, False, 'default', db_alias)
          except TypeError:  # Django < 1.8
              emit_post_migrate_signal([], 2, False, 'default', db_alias)
  
      for media in Media.objects.all():
          new_media = MoloMedia.objects.create(
              title=media.title, file=media.file, duration=media.duration,
              type=media.type)
          if media.type = 'video':
              new_media.update(
                  width=media.width, height=media.height,
                  thumbnail=media.thumbnail)
          media.file = None
          media.save()
          for article in ArticlePage.objects.all():
              for block in article.body:
                  if block.block_type is 'media' and block.value is media.id:
                      block.value = new_media.id
                      article.save()
  
  
  class Migration(migrations.Migration):
  
      dependencies = [
          ('core', '0067_promote_homepage_media'),
          ('wagtailmedia', '0003_copy_media_permissions_to_collections'),
      ]
  
      operations = [
          migrations.RunPython(convert_media_to_molo_media),
      ]
  
new_contents: # -*- coding: utf-8 -*-
  from __future__ import unicode_literals
  
  from django.db import migrations, models
  from django.core.management.sql import emit_post_migrate_signal
  from molo.core.models import MoloMedia, ArticlePage
  from wagtailmedia.models import Media
  
  
  def convert_media_to_molo_media(apps, schema_editor):
      db_alias = schema_editor.connection.alias
      try:
          # Django 1.9
          emit_post_migrate_signal(2, False, db_alias)
      except TypeError:
          # Django < 1.9
          try:
              # Django 1.8
              emit_post_migrate_signal(2, False, 'default', db_alias)
          except TypeError:  # Django < 1.8
              emit_post_migrate_signal([], 2, False, 'default', db_alias)
  
      for media in Media.objects.all():
          if media.type == 'video':
              new_media = MoloMedia.objects.create(
              title=media.title, file=media.file, duration=media.duration,
              type=media.type, width=media.width, height=media.height,
              thumbnail=media.thumbnail)
          else:
              new_media = MoloMedia.objects.create(
              title=media.title, file=media.file, duration=media.duration,
              type=media.type)
          media.file = None
          media.save()
          for article in ArticlePage.objects.all():
              for block in article.body:
                  if block.block_type is 'media' and block.value is media.id:
                      block.value = new_media.id
                      article.save()
  
  
  class Migration(migrations.Migration):
  
      dependencies = [
          ('core', '0067_promote_homepage_media'),
          ('wagtailmedia', '0003_copy_media_permissions_to_collections'),
      ]
  
      operations = [
          migrations.RunPython(convert_media_to_molo_media),
      ]
  
subject: check for video and audio