class User < ActiveRecord::Base

  STATES = ['AL', 'AK','AZ','AR','CA','CO','CT','DE','DC','FL','GA','HI','ID','IL','IA','KS','KY','LA','ME',
            'MD','MA','MI','MN','MS','MO','MT','NE','NV','NH','NJ','NM','NY','NC','ND','OH','OK','OR','PA',
            'RI','SC','SD','TN','TX','UT','VT','VA','WA','WV','WI','WY']


  validates :first_name, :last_name, :address, :city, :zipcode,
          :phone_number, :presence => true

  validates :state, :inclusion => STATES

  validates :user_name,:email_address, :presence => true, :uniqueness => true
  validates :password, :confirmation => true

  validate  :password_must_be_present

  attr_accessor :password_confirmation
  attr_reader :password


  def password_must_be_present
    errors.add(:password, 'Missing Password') unless hashed_password.present?
  end



class Trainer < User



end


NoMethodError in Trainers#new

Showing /Users/justin/RubymineProjects/fitness/app/views/trainers/_form.html.erb where line #16 raised:

undefined method `education' for #<Trainer:0x26b4fc0>
Extracted source (around line #16):

13:
14:   <div class="field">
15:     <%= f.label :education %><br />
16:     <%= f.text_area :education %>
17:   </div>
18:   <div class="field">
19:     <%= f.label :picture_url %><br />
Trace of template inclusion: app/views/trainers/new.html.erb

Rails.root: /Users/justin/RubymineProjects/fitness

Application Trace | Framework Trace | Full Trace
app/views/trainers/_form.html.erb:16:in `_app_views_trainers__form_html_erb___537327329_20272410_451296'
app/views/trainers/_form.html.erb:1:in `_app_views_trainers__form_html_erb___537327329_20272410_451296'
app/views/trainers/new.html.erb:3:in `_app_views_trainers_new_html_erb__1044883449_20278940_0'
app/controllers/trainers_controller.rb:29:in `new'


  def User.encrypt_password(password, salt)
      Digest::SHA2.hexdigest(password + "38id!ugf%ow@e47" + salt)
  end

  def generate_salt
    self.salt = self.object_id.to_s + rand.to_s
  end

  def password=(password)
    @password = password

    if password.present?
      generate_salt
      self.hashed_password = self.class.encrypt_password(password, salt)
    end
  end

  def User.authenticate(user_name, password)
    if user = find_by_name(user_name)
      if user.hashed_password == encrypt_password(password, user.salt)
        user
      end
    end
  end

end