Admin fixes

lib/pleroma/web/admin_api/admin_api_controller.ex

@@ -402,9 +402,9 @@ defmodule Pleroma.Web.AdminAPI.AdminAPIController do
       if Pleroma.Config.get([:instance, :dynamic_configuration]) do
         updated =
           Enum.map(configs, fn
-            %{"group" => group, "key" => key, "delete" => "true"} ->
-              {:ok, _} = Config.delete(%{group: group, key: key})
-              nil
+            %{"group" => group, "key" => key, "delete" => "true"} = params ->
+              {:ok, config} = Config.delete(%{group: group, key: key, subkeys: params["subkeys"]})
+              config
 
             %{"group" => group, "key" => key, "value" => value} ->
               {:ok, config} = Config.update_or_create(%{group: group, key: key, value: value})

lib/pleroma/web/admin_api/config.ex

@@ -55,8 +55,19 @@ defmodule Pleroma.Web.AdminAPI.Config do
 
   @spec delete(map()) :: {:ok, Config.t()} | {:error, Changeset.t()}
   def delete(params) do
-    with %Config{} = config <- Config.get_by_params(params) do
-      Repo.delete(config)
+    with %Config{} = config <- Config.get_by_params(Map.delete(params, :subkeys)) do
+      if params[:subkeys] do
+        updated_value =
+          Keyword.drop(
+            :erlang.binary_to_term(config.value),
+            Enum.map(params[:subkeys], &do_transform_string(&1))
+          )
+
+        Config.update(config, %{value: updated_value})
+      else
+        Repo.delete(config)
+        {:ok, nil}
+      end
     else
       nil ->
         err =