fix: no fallar si no hay registros sobre los que actuar #15725

app/controllers/activity_pubs_controller.rb

@@ -29,16 +29,18 @@ class ActivityPubsController < ApplicationController
   end
 
   def action_on_several
+    redirect_to_moderation_queue!
+
     activity_pubs = site.activity_pubs.where(id: params[:activity_pub])
 
+    return if activity_pubs.count.zero?
+
     authorize activity_pubs
 
     action = params[:activity_pub_action].to_sym
     method = :"#{action}_all!"
     may    = :"may_#{action}?"
 
-    redirect_to_moderation_queue!
-
     return unless ActivityPub.events.include? action
 
     # Crear una sola remote flag por autore

app/controllers/actor_moderations_controller.rb

@@ -48,16 +48,18 @@ class ActorModerationsController < ApplicationController
   end
 
   def action_on_several
+    redirect_to_moderation_queue!
+
     actor_moderations = site.actor_moderations.where(id: params[:actor_moderation])
 
+    return if actor_moderations.count.zero?
+
     authorize actor_moderations
 
     action = params[:actor_moderation_action].to_sym
     method = :"#{action}_all!"
     may    = :"may_#{action}?"
 
-    redirect_to_moderation_queue!
-
     return unless ActorModeration.events.include? action
 
     ActorModeration.transaction do

app/controllers/instance_moderations_controller.rb

@@ -22,15 +22,17 @@ class InstanceModerationsController < ApplicationController
   end
 
   def action_on_several
+    redirect_to_moderation_queue!
+
     instance_moderations = site.instance_moderations.where(id: params[:instance_moderation])
 
+    return if instance_moderations.count.zero?
+
     authorize instance_moderations
 
     action = params[:instance_moderation_action].to_sym
     method = :"#{action}_all!"
 
-    redirect_to_moderation_queue!
-
     return unless InstanceModeration.events.include? action
 
     InstanceModeration.transaction do

app/policies/instance_moderation_policy.rb

@@ -11,6 +11,6 @@ InstanceModerationPolicy = Struct.new(:usuarie, :instance_moderation) do
   # En este paso tenemos varias instancias por moderar pero todas son
   # del mismo sitio.
   def action_on_several?
-    instance_moderation.first.site.usuarie? usuarie
+    instance_moderation.first.presence && instance_moderation.first.site.usuarie? usuarie
   end
 end