Do not include ordinal in result when no function is set

Author: bernardd

lib/absinthe/phase/subscription/get_ordinal.ex

@@ -9,34 +9,22 @@ defmodule Absinthe.Phase.Subscription.GetOrdinal do
 
   @spec run(any, Keyword.t()) :: {:ok, Blueprint.t()}
   def run(blueprint, _options \\ []) do
-    op = Blueprint.current_operation(blueprint)
-
-    if op.type == :subscription do
-      {:ok,
-       %{blueprint | result: Map.put(blueprint.result, :ordinal, get_ordinal(op, blueprint))}}
+    with %{type: :subscription, selections: [field]} <- Blueprint.current_operation(blueprint),
+         {:ok, config} = SubscribeSelf.get_config(field, blueprint.execution.context, blueprint),
+         ordinal_fun when is_function(ordinal_fun, 1) <- config[:ordinal] do
+      result = ordinal_fun.(blueprint.execution.root_value)
+      {:ok, %{blueprint | result: Map.put(blueprint.result, :ordinal, result)}}
     else
-      {:ok, blueprint}
-    end
-  end
-
-  defp get_ordinal(op, blueprint) do
-    %{selections: [field]} = op
-    {:ok, config} = SubscribeSelf.get_config(field, blueprint.execution.context, blueprint)
-
-    case config[:ordinal] do
-      nil ->
-        nil
-
-      fun when is_function(fun, 1) ->
-        fun.(blueprint.execution.root_value)
-
-      _fun ->
+      f when is_function(f) ->
         IO.write(
           :stderr,
           "Ordinal function must be 1-arity"
         )
 
-        nil
+        {:ok, blueprint}
+
+      _ ->
+        {:ok, blueprint}
     end
   end
 end

test/absinthe/execution/subscription_test.exs

@@ -215,7 +215,7 @@ defmodule Absinthe.Execution.SubscriptionTest do
 
     assert %{
              event: "subscription:data",
-             result: %{data: %{"thing" => "foo"}, ordinal: nil},
+             result: %{data: %{"thing" => "foo"}},
              topic: topic
            } == msg
   end
@@ -259,7 +259,7 @@ defmodule Absinthe.Execution.SubscriptionTest do
 
     msg = %{
       event: "subscription:data",
-      result: %{data: %{"multipleTopics" => "foo"}, ordinal: nil},
+      result: %{data: %{"multipleTopics" => "foo"}},
       topic: topic
     }
 
@@ -361,7 +361,7 @@ defmodule Absinthe.Execution.SubscriptionTest do
 
     assert %{
              event: "subscription:data",
-             result: %{data: %{"user" => %{"id" => "1", "name" => "foo"}}, ordinal: nil},
+             result: %{data: %{"user" => %{"id" => "1", "name" => "foo"}}},
              topic: topic
            } == msg
   end
@@ -409,7 +409,7 @@ defmodule Absinthe.Execution.SubscriptionTest do
 
     assert %{
              event: "subscription:data",
-             result: %{data: %{"thing" => "foo"}, ordinal: nil},
+             result: %{data: %{"thing" => "foo"}},
              topic: topic
            } == msg
   end
@@ -428,7 +428,7 @@ defmodule Absinthe.Execution.SubscriptionTest do
 
         assert %{
                  event: "subscription:data",
-                 result: %{data: %{"thing" => "foo"}, ordinal: nil},
+                 result: %{data: %{"thing" => "foo"}},
                  topic: topic
                } == msg
       end)
@@ -640,7 +640,7 @@ defmodule Absinthe.Execution.SubscriptionTest do
 
     assert %{
              event: "subscription:data",
-             result: %{data: %{"thing" => "foo"}, ordinal: nil},
+             result: %{data: %{"thing" => "foo"}},
              topic: topic
            } == msg