[rails3] How can I use session instance variable within validation?

Question

I currently have below lines for application_controller.rb. Basically, I am using session to check whether user has logged in or not, including authentication. I just used a term m

class ApplicationController < ActionController::Base
  protect_from_forgery
  protected
    # Returns the currently logged in member or nil if there isn't one
    def current_member
      return unless session[:member_id]
      @current_member ||= Member.find_by_id(session[:member_id])
    end

    # Make current_member available in templates as a helper
    helper_method :current_member

    # Filter method to enforce a login requirement
    # Apply as a before_filter on any controller you want to protect
    def authenticate
      logged_in? ? true : access_denied
    end

    # Predicate method to test for a logged in member
    def logged_in?
      current_member.is_a? Member
    end

    # Make logged_in? available in templates as a helper
    helper_method :logged_in?

    def access_denied
      redirect_to login_path, :notice => "Please log in to continue" and return false
    end
end

And I have a class called article, where users can write some articles. In database table configuration, this article table has a column name called member_id which basically records the unique id value of each member as an author. I did belongs_to/has_many linking, but I am now stuck on article.rb model validation. How can I approach the member_id using the above code?? Can I just say it like

class Article < ActiveRecord::Base
   member_id = current_member.id
end

Answer 1

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