部门是必填字段

app/forms/users/update_account_form.rb

@@ -14,6 +14,7 @@ class Users::UpdateAccountForm
   validates :technical_title, presence: true, unless: -> { identity.to_s == 'student' }
   validates :student_id, presence: true, if: -> { identity.to_s == 'student' }
   validates :school_id, presence: true
+  validates :department_id, presence: true
 
   validate :check_school_exist
   def check_school_exist