init project

app/models/project_package.rb

@@ -0,0 +1,81 @@
+class ProjectPackage < ApplicationRecord
+  include AASM
+
+  belongs_to :creator, class_name: 'User'
+  belongs_to :project_package_category
+
+  has_many :project_package_applies, dependent: :destroy
+  has_one :process_project_package_apply, -> { where(status: :pending) }, class_name: 'ProjectPackageApply'
+
+  has_many :bidding_users, dependent: :delete_all
+  has_many :win_bidding_users, -> { where(status: :bidding_won) }, class_name: 'BiddingUser'
+  has_many :lose_bidding_users, -> { where(status: :bidding_lost) }, class_name: 'BiddingUser'
+
+  has_many :attachments, as: :container, dependent: :destroy
+
+  scope :visible, -> { where(status: %i[published bidding_ended bidding_finished]) }
+  scope :invisible, -> { where(status: %i[pending applying refused]) }
+
+  aasm(:status) do
+    state :pending, initial: true
+    state :applying
+    state :refused
+    state :published
+    state :bidding_ended
+    state :bidding_finished
+
+    event :apply do
+      transitions from: [:pending, :refused], to: :applying
+    end
+
+    event :refuse do
+      transitions from: :applying, to: :refused
+    end
+
+    event :publish do
+      transitions from: :applying, to: :published
+    end
+
+    event :end_bidding do
+      transitions from: :published, to: :bidding_ended
+    end
+
+    event :finish_bidding do
+      transitions from: [:bidding_ended], to: :bidding_finished
+    end
+  end
+
+  def category_name
+    project_package_category.name
+  end
+
+  def visitable?
+    !editable?
+  end
+
+  def editable?
+    pending? || applying? || refused?
+  end
+
+  def deletable?
+    pending? || refused?
+  end
+
+  def deadline?
+    deadline_at < Time.now
+  end
+
+  def bidding_end?
+    flag = deadline?
+    ProjectPackages::EndBiddingService.call(self) if flag && may_end_bidding?
+    flag
+  end
+
+  def can_bidding?(user)
+    published? && !bidding_end? && user.id != creator_id && !bidding_users.exists?(user_id: user.id)
+  end
+
+  def status_text
+    I18n.t("project_package.status.#{status}")
+  end
+end