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[akkoma] / lib / pleroma / web / controller_helper.ex

diff --git a/lib/pleroma/web/controller_helper.ex b/lib/pleroma/web/controller_helper.ex
index 83b884ba9734ffd05b0825f2564153addebea34c..ad293cda937e4c2f379013a55dc0f883bb992f5e 100644 (file)
--- a/lib/pleroma/web/controller_helper.ex
+++ b/lib/pleroma/web/controller_helper.ex
@@ -1,5 +1,5 @@
 # Pleroma: A lightweight social networking server
-# Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
+# Copyright © 2017-2020 Pleroma Authors <https://pleroma.social/>
 # SPDX-License-Identifier: AGPL-3.0-only
 
 defmodule Pleroma.Web.ControllerHelper do
@@ -75,4 +75,20 @@ defmodule Pleroma.Web.ControllerHelper do
       nil -> Pleroma.Web.MastodonAPI.FallbackController.call(conn, {:error, :not_found}) |> halt()
     end
   end
+
+  def try_render(conn, target, params) when is_binary(target) do
+    case render(conn, target, params) do
+      nil -> render_error(conn, :not_implemented, "Can't display this activity")
+      res -> res
+    end
+  end
+
+  def try_render(conn, _, _) do
+    render_error(conn, :not_implemented, "Can't display this activity")
+  end
+
+  @spec put_if_exist(map(), atom() | String.t(), any) :: map()
+  def put_if_exist(map, _key, nil), do: map
+
+  def put_if_exist(map, key, value), do: Map.put(map, key, value)
 end