[#1474] fix resource schema in package show to return None as default

Without a default these values, if not provided can return Missing,
which is not jsonable and causes the package/related/api controllers to
404 when they try to dump the json.

ckan/lib/navl/validators.py

@@ -65,13 +65,13 @@ def ignore(key, data, errors, context):
     value = data.pop(key, None)
     raise StopOnError
 
-def default(defalult_value):
+def default(default_value):
 
     def callable(key, data, errors, context):
 
         value = data.get(key)
         if not value or value is missing:
-            data[key] = defalult_value
+            data[key] = default_value
 
     return callable
 

ckan/logic/schema.py

@@ -5,7 +5,8 @@
                                       ignore,
                                       if_empty_same_as,
                                       not_missing,
-                                      ignore_empty
+                                      ignore_empty,
+                                      default,
                                      )
 from ckan.logic.validators import (package_id_not_changed,
                                    package_id_exists,
@@ -203,20 +204,20 @@ def default_show_package_schema():
         'last_modified': [ckan.lib.navl.validators.ignore_missing],
         'cache_last_updated': [ckan.lib.navl.validators.ignore_missing],
         'webstore_last_updated': [ckan.lib.navl.validators.ignore_missing],
-        'revision_timestamp': [],
-        'resource_group_id': [],
-        'cache_last_updated': [],
-        'webstore_last_updated': [],
-        'size': [],
-        'state': [],
-        'last_modified': [],
-        'mimetype': [],
-        'cache_url': [],
-        'name': [],
-        'webstore_url': [],
-        'mimetype_inner': [],
-        'resource_type': [],
-        'url_type': [],
+        'revision_timestamp': [default(None)],
+        'resource_group_id': [default(None)],
+        'cache_last_updated': [default(None)],
+        'webstore_last_updated': [default(None)],
+        'size': [default(None)],
+        'state': [default(None)],
+        'last_modified': [default(None)],
+        'mimetype': [default(None)],
+        'cache_url': [default(None)],
+        'name': [default(None)],
+        'webstore_url': [default(None)],
+        'mimetype_inner': [default(None)],
+        'resource_type': [default(None)],
+        'url_type': [default(None)],
     })
 
     schema.update({