Task status selector in index

app/services/application_service.rb

@@ -4,8 +4,6 @@ class ApplicationService
   include ActiveModel::Model
   include ActiveModel::Attributes
 
-  attr_reader :errors
-
   def perform
     # Override this
   end

app/services/tasks/change_status.rb

@@ -0,0 +1,22 @@
+# frozen_string_literal: true
+
+module Tasks
+  class ChangeStatus < ApplicationService
+    attribute :status_id, :integer
+
+    validates :status_id, presence: true
+    attr_reader :task
+
+    delegate :model_name, to: Task
+
+    def perform(task)
+      @task = task
+      @id = task.id
+
+      return false unless valid?
+
+      @task.status_id = status_id
+      save @task
+    end
+  end
+end