don't store source images in database

src/c3nav/mapdata/migrations/0016_remove_source_image.py

@@ -0,0 +1,30 @@
+# -*- coding: utf-8 -*-
+# Generated by Django 1.11.2 on 2017-07-08 12:52
+from __future__ import unicode_literals
+
+import os
+
+from django.conf import settings
+from django.db import migrations
+
+
+def move_sources(apps, schema_editor):
+    Source = apps.get_model('mapdata', 'Source')
+    for source in Source.objects.all():
+        with open(os.path.join(settings.SOURCES_ROOT, source.name), 'wb') as f:
+            f.write(source.image)
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('mapdata', '0015_auto_20170706_1334'),
+    ]
+
+    operations = [
+        migrations.RunPython(move_sources),
+        migrations.RemoveField(
+            model_name='source',
+            name='image',
+        ),
+    ]

src/c3nav/mapdata/models/source.py

@@ -9,7 +9,6 @@ class Source(BoundsMixin, models.Model):
     A map source, images of levels that can be useful as backgrounds for the map editor
     """
     name = models.SlugField(_('Name'), unique=True, max_length=50)
-    image = models.BinaryField(_('image data'))  # todo migrate to better storage
 
     class Meta:
         verbose_name = _('Source')

src/c3nav/settings.py

@@ -18,6 +18,7 @@ BASE_DIR = os.path.dirname(os.path.dirname(__file__))
 DATA_DIR = config.get('c3nav', 'datadir', fallback=os.environ.get('DATA_DIR', 'data'))
 LOG_DIR = os.path.join(DATA_DIR, 'logs')
 MEDIA_ROOT = os.path.join(DATA_DIR, 'media')
+SOURCES_ROOT = os.path.join(DATA_DIR, 'sources')
 MAP_ROOT = os.path.join(DATA_DIR, 'map')
 RENDER_ROOT = os.path.join(DATA_DIR, 'render')
 
@@ -27,6 +28,8 @@ if not os.path.exists(LOG_DIR):
     os.mkdir(LOG_DIR)
 if not os.path.exists(MEDIA_ROOT):
     os.mkdir(MEDIA_ROOT)
+if not os.path.exists(SOURCES_ROOT):
+    os.mkdir(SOURCES_ROOT)
 if not os.path.exists(MAP_ROOT):
     os.mkdir(MAP_ROOT)
 if not os.path.exists(RENDER_ROOT):