Fix admin api.

lib/pleroma/plugs/user_is_admin_plug.ex

@@ -6,7 +6,7 @@ defmodule Pleroma.Plugs.UserIsAdminPlug do
     options
   end
 
-  def call(%{assigns: %{user: %User{info: %{"is_admin" => true}}}} = conn, _) do
+  def call(%{assigns: %{user: %User{info: %{is_admin: true}}}} = conn, _) do
     conn
   end
 

lib/pleroma/user/info.ex

@@ -16,6 +16,7 @@ defmodule Pleroma.User.Info do
     field(:no_rich_text, :boolean, default: false)
     field(:ap_enabled, :boolean, default: false)
     field(:is_moderator, :boolean, default: false)
+    field(:is_admin, :boolean, default: false)
     field(:keys, :string, default: nil)
     field(:settings, :map, default: nil)
     field(:magic_key, :string, default: nil)
@@ -134,4 +135,12 @@ defmodule Pleroma.User.Info do
     |> cast(params, [:source_data])
     |> validate_required([:source_data])
   end
+
+  def admin_api_update(info, params) do
+    info
+    |> cast(params, [
+      :is_moderator,
+      :is_admin
+    ])
+  end
 end

lib/pleroma/web/admin_api/admin_api_controller.ex

@@ -45,21 +45,29 @@ defmodule Pleroma.Web.AdminAPI.AdminAPIController do
     user = User.get_by_nickname(nickname)
 
     info =
-      user.info
+      %{}
       |> Map.put("is_" <> permission_group, true)
 
-    cng = User.info_changeset(user, %{info: info})
+    info_cng = User.Info.admin_api_update(user.info, info)
+
+    cng =
+      Ecto.Changeset.change(user)
+      |> Ecto.Changeset.put_embed(:info, info_cng)
+
     {:ok, user} = User.update_and_set_cache(cng)
 
     conn
-    |> json(user.info)
+    |> json(info)
   end
 
   def right_get(conn, %{"nickname" => nickname}) do
     user = User.get_by_nickname(nickname)
 
     conn
-    |> json(user.info)
+    |> json(%{
+      is_moderator: user.info.is_moderator,
+      is_admin: user.info.is_admin
+    })
   end
 
   def right_add(conn, _) do
@@ -84,14 +92,19 @@ defmodule Pleroma.Web.AdminAPI.AdminAPIController do
       user = User.get_by_nickname(nickname)
 
       info =
-        user.info
+        %{}
         |> Map.put("is_" <> permission_group, false)
 
-      cng = User.info_changeset(user, %{info: info})
+      info_cng = User.Info.admin_api_update(user.info, info)
+
+      cng =
+        Ecto.Changeset.change(user)
+        |> Ecto.Changeset.put_embed(:info, info_cng)
+
       {:ok, user} = User.update_and_set_cache(cng)
 
       conn
-      |> json(user.info)
+      |> json(info)
     end
   end