Task create and update

app/services/tasks/create.rb

@@ -0,0 +1,22 @@
+# frozen_string_literal: true
+
+module Tasks
+  class Create < ApplicationService
+    attribute :project_id, :integer
+    attribute :title, :string
+    attribute :description, :string
+
+    validates :project_id, :title, presence: true
+
+    delegate :model_name, to: Task
+
+    attr_reader :project, :task
+
+    def perform
+      @project = Project.find(project_id)
+
+      @task = @project.tasks.build(title:, description:, number: @project.next_task_number)
+      @task.save.tap { @errors = @task.errors }
+    end
+  end
+end

app/services/tasks/update.rb

@@ -0,0 +1,22 @@
+# frozen_string_literal: true
+
+module Tasks
+  class Update < ApplicationService
+    attribute :id, :integer
+    attribute :title, :string
+    attribute :description, :string
+
+    validates :title, presence: true
+
+    delegate :model_name, to: Task
+
+    def persisted? = true
+
+    def perform(task)
+      @task = task
+      @id = task.id
+      @task.assign_attributes(title:, description:)
+      save @task
+    end
+  end
+end