init project

app/models/user_extension.rb

@@ -0,0 +1,22 @@
+class UserExtension < ApplicationRecord
+  # identity 0: 教师教授 1: 学生, 2: 专业人士, 3: 开发者
+  enum identity: { teacher: 0, student: 1, professional: 2, developer: 3, enterprise: 4, unselect: -1 }
+
+  belongs_to :user, touch: true
+  belongs_to :school, optional: true
+  belongs_to :department, optional: true
+
+  before_save :set_laboratory_school
+
+  def identity_text
+    I18n.t("user.identity.#{identity}")
+  end
+
+  private
+
+  def set_laboratory_school
+    return unless new_record?
+
+    self.school_id = Laboratory.current.school_id if school_id.blank? && !Laboratory.current.main_site?
+  end
+end