Mezzyblocks patch to fix problems with empty queries

mezzyblocks_patch.diff

diff --git a/blocktypes/random_image.py b/blocktypes/random_image.py
index 8234f50..9a8be3a 100644
--- a/blocktypes/random_image.py
+++ b/blocktypes/random_image.py
@@ -2,6 +2,7 @@ from random import choice
 
 from django.template import Context, Template
 from django.template.loader import get_template, render_to_string
+from django.core.exceptions import ObjectDoesNotExist
 
 from mezzanine.conf import settings
 from mezzanine.galleries.models import Gallery
@@ -21,28 +22,38 @@ block_settings = (
 
 def getSetting( block, setting, default=None ):
 	"""Get a settings value configured for a block, or it's default."""
-	value = BlockConfig.objects.get(
-		block_id = block.id,
-		setting = BlockTypeSetting.objects.get(
-			blocktype = block.blocktype_id,
-			setting_name = setting )
-	).value
-
-	if not value: value = default
+	value = default
+	try:
+		value = BlockConfig.objects.get(
+			block_id = block.id,
+			setting = BlockTypeSetting.objects.get(
+				blocktype = block.blocktype_id,
+				setting_name = setting )
+		).value
+	except ObjectDoesNotExist:
+		pass
+
 	return value
 
 
 def block_context_processor(block):
-
 	gallery = getSetting( block, "gallery", block_settings[0][2] )
 
-	folder = Gallery.objects.get(title=gallery)
-	files = folder.images.all()
-	rand_file = choice(files)
+	try:
+		folder = Gallery.objects.get(title=gallery)
+	except Gallery.DoesNotExist:
+		folder = None
+
+	title = ""
+	image = None
+	if folder:
+		files = folder.images.all()
+		rand_file = choice(files)
 
-	title = rand_file.description
-	image = settings.MEDIA_URL+str(rand_file.file)
-	image = image[1:]
+		if rand_file:
+			title = rand_file.description
+			image = settings.MEDIA_URL+str(rand_file.file)
+			image = image[1:]
 
 	#Fill this context with any KEY, VALUE pairs
 	#to pass them to the template
diff --git a/templates/random_image.html b/templates/random_image.html
index 0fcf609..45efee8 100644
--- a/templates/random_image.html
+++ b/templates/random_image.html
@@ -1,5 +1,5 @@
 <h1>{{title}}</h1>
 
 {% if image %}
-	<img href="/{{image}}" style="width:228px; height:228px;"/>
+	<img src="/{{image}}" style="width:229px; height:228px;" />
 {% endif %}