support space containing label setting on links

2 files changed, 7 insertions, 1 deletions

diff --git a/src/server/db_controller.py b/src/server/db_controller.py
index 3ce48a7c..a0641544 100644
--- a/src/server/db_controller.py
+++ b/src/server/db_controller.py
@@ -225,7 +225,7 @@ class DBO_attr_diff_commit(DB_op):
         # the replaced label.
 
         q_create_new = ["match a-[l_old {id: {id}}]->b",
-                        "create a-[l_new:%s]->b set l_new=l_old" % new_label,
+                        "create a-[l_new:%s]->b set l_new=l_old" % neo4j_util.quote__backtick(new_label),
                         "return l_new.id, {id: l_new.id, name: type(l_new)}",
                         ]
         q_delete_old = ["match a-[l_old {id: {id}}]->b",
diff --git a/src/server/neo4j_util.py b/src/server/neo4j_util.py
index 8b48875a..e514f614 100644
--- a/src/server/neo4j_util.py
+++ b/src/server/neo4j_util.py
@@ -73,6 +73,12 @@ class Cypher_String_Formatter(string.Formatter):
 def cfmt(fmt_str, *args, **kwargs):
     return Cypher_String_Formatter().format(fmt_str, *args, **kwargs)
 
+def quote__backtick(label):
+    """
+    quote label (possibly containing spaces) with backticks
+    """
+    return '`' + label + '`'
+
 def post_neo4j(url, data):
     """
     @return dict object from the neo4j json POST response