fix linting

lib/mv_web/controllers/member_export_controller.ex

@@ -10,10 +10,10 @@ defmodule MvWeb.MemberExportController do
   require Ash.Query
   import Ash.Expr
 
-  alias Mv.Membership.Member
-  alias Mv.Membership.CustomField
-  alias Mv.Membership.MembersCSV
   alias Mv.Authorization.Actor
+  alias Mv.Membership.CustomField
+  alias Mv.Membership.Member
+  alias Mv.Membership.MembersCSV
 
   @member_fields_allowlist Mv.Constants.member_fields() |> Enum.map(&Atom.to_string/1)
   @custom_field_prefix Mv.Constants.custom_field_prefix()
@@ -100,7 +100,9 @@ defmodule MvWeb.MemberExportController do
 
   defp filter_valid_uuids(id_list) when is_list(id_list) do
     id_list
-    |> Enum.filter(fn id -> is_binary(id) and match?({:ok, _}, Ecto.UUID.cast(id)) end)
+    |> Enum.filter(fn id ->
+      is_binary(id) and match?({:ok, _}, Ecto.UUID.cast(id))
+    end)
     |> Enum.uniq()
   end
 
@@ -130,14 +132,18 @@ defmodule MvWeb.MemberExportController do
       |> Ash.Query.filter(expr(id in ^custom_field_ids))
       |> Ash.Query.select([:id, :name, :value_type])
 
-    case Ash.read(query, actor: actor) do
-      {:ok, custom_fields} ->
-        by_id = build_custom_fields_by_id(custom_field_ids, custom_fields)
-        {:ok, by_id}
+    query
+    |> Ash.read(actor: actor)
+    |> handle_custom_fields_read_result(custom_field_ids)
+  end
 
-      {:error, %Ash.Error.Forbidden{}} ->
-        {:error, :forbidden}
-    end
+  defp handle_custom_fields_read_result({:ok, custom_fields}, custom_field_ids) do
+    by_id = build_custom_fields_by_id(custom_field_ids, custom_fields)
+    {:ok, by_id}
+  end
+
+  defp handle_custom_fields_read_result({:error, %Ash.Error.Forbidden{}}, _custom_field_ids) do
+    {:error, :forbidden}
   end
 
   defp build_custom_fields_by_id(custom_field_ids, custom_fields) do