What is the best way to get the type of an attribute in Active Record (even before the attribute has been assigned)? For example (this doesn't work, just the goal):

User.new
User.inspect(:id)         # :integer
User.inspect(:name)       # :string
User.inspect(:password)   # :string
User.inspect(:updated_at) # :datetime
User.inspect(:created_at) # :datetime

Thanks!

ruby-on-rails
Edit
Report