Statuses in task - db field and forms

app/models/task.rb

@@ -2,9 +2,11 @@
 
 class Task < ApplicationRecord
   belongs_to :project
+  belongs_to :status, class_name: 'TaskStatus'
 
   validates :number, :title, presence: true
   validates :number, numericality: { greater_than: 0 }
+  validate :associations_should_have_same_project
 
   has_rich_text :description
 
@@ -25,4 +27,12 @@ class Task < ApplicationRecord
     project = Project.find_by!(code: project_code.downcase)
     find_by!(project:, number:)
   end
+
+  private
+
+  def associations_should_have_same_project
+    return if status&.project == project
+
+    errors.add(:status, "Doesn't belong in the same project")
+  end
 end

app/models/task_status.rb

@@ -7,4 +7,6 @@ class TaskStatus < ApplicationRecord
 
   validates :name, presence: true, uniqueness: { scope: :project }
   validates :category, presence: true
+
+  scope :default_order, -> { order(:category, :name) }
 end