X-Git-Url: https://git.mdrn.pl/librarian.git/blobdiff_plain/30d14a324bb0e8a99c54cbceea01476e59748b33..5f2702eda7a1b36f4d29658b5468b6b78745218c:/librarian/dcparser.py

diff --git a/librarian/dcparser.py b/librarian/dcparser.py
index a0eaa04..5a571ec 100644
--- a/librarian/dcparser.py
+++ b/librarian/dcparser.py
@@ -248,7 +248,7 @@ class WorkInfo(object):
                 if not field.multiple:
                     raise "OUCH!! for field %s" % name
 
-                return value[0]
+                return value[0] if value else None
         except (KeyError, AttributeError):
             return object.__getattribute__(self, name)
 
@@ -347,9 +347,12 @@ class BookInfo(WorkInfo):
         Field( DCNS('audience'), 'audiences', salias='audience', multiple=True,
                 required=False),
 
-        Field( DCNS('subject.period'), 'epochs', salias='epoch', multiple=True),
-        Field( DCNS('subject.type'), 'kinds', salias='kind', multiple=True),
-        Field( DCNS('subject.genre'), 'genres', salias='genre', multiple=True),
+        Field( DCNS('subject.period'), 'epochs', salias='epoch', multiple=True,
+                required=False),
+        Field( DCNS('subject.type'), 'kinds', salias='kind', multiple=True,
+                required=False),
+        Field( DCNS('subject.genre'), 'genres', salias='genre', multiple=True,
+                required=False),
                 
         Field( DCNS('contributor.translator'), 'translators', \
             as_person,  salias='translator', multiple=True, default=[]),
@@ -358,9 +361,9 @@ class BookInfo(WorkInfo):
         Field( DCNS('relation.isVariantOf'), 'variant_of', 
             WLURI, strict=as_wluri_strict, required=False),
 
-        Field( DCNS('relation.cover_image.url'), 'cover_url', required=False),
-        Field( DCNS('relation.cover_image.attribution'), 'cover_by', required=False),
-        Field( DCNS('relation.cover_image.source'), 'cover_source', required=False),
+        Field( DCNS('relation.coverImage.url'), 'cover_url', required=False),
+        Field( DCNS('relation.coverImage.attribution'), 'cover_by', required=False),
+        Field( DCNS('relation.coverImage.source'), 'cover_source', required=False),
     )