elasticsearch parent child sort by child value

gistfile1.txt

curl -XPOST localhost:9200/test -d '{
    "mappings" : {
        "person" : {
            "properties" : {
                "name" : { "type" : "string" }
            }
        },
        "homes" : {
        	"_parent":{ "type" : "person" },
            "properties" : {
                "views" : { "type" : "long" }
            }
        }
    }
}'

curl -XPUT localhost:9200/test/person/zach/ -d'
{
  "name" : "Zach"
}'

curl -XPOST localhost:9200/test/homes?parent=zach -d'
{
  "views" : 100
}'

curl -XPUT localhost:9200/test/person/jack/ -d'
{
  "name" : "Jack"
}'

curl -XPOST localhost:9200/test/homes?parent=jack -d'
{
  "views" : 50
}'