gistfile1.txt

module Bannable
  extend ActiveSupport::Concern
  
  included do
    extend ClassMethods
    default_scope where("banned_at IS NULL")
  end
  
  def ban(reason=nil)
    options = ban_attributes({ban_reason: reason, banned_at: DateTime.now})
    do_bannable options
  end

  def unban
    options = ban_attributes({ban_reason: nil, banned_at: nil})
    do_bannable options
  end

  def banned?
    self[:banned_at].present?
  end
  
private

  def do_bannable(ban_options)
    update_attributes ban_options
    if self.kind_of?(User)
      ban_options.merge! user_id: id
      self.class.send(:update_child_resources, ban_options)
    end
  end

  def ban_attributes(options)
    attributes = { banned_at: options[:banned_at] }
    attributes.merge!(ban_reason: options[:ban_reason]) if respond_to?(:ban_reason)
  end
  
  module ClassMethods
    
    def ban_all(ids, reason=nil)
      ban_options = {ban: true, ids: ids, ban_reason: reason}
      do_bannable ban_options
    end
    
    def un_all(ids)
      ban_options = {ban: false, ids: ids, ban_reason: nil}
      do_bannable ban_options
    end
    
  private
  
    def do_bannable(ban_options)
      update_call ban_options
      update_child_resources ban_options if self.kind_of?(User)
    end
    
    def update_call(options)
      fields_sql    = "banned_at = ?"
      fields_sql    = fields_sql + ", ban_reason = ?" if respond_to?(:ban_reason)
      field_values  = [options[:banned_at]]
      field_values  = [field_values + options[:banned_at]]  if respond_to?(:ban_reason)
      where_clause  = options[:user_id].present? ?  ["user_id = ? ", options[:user_id]] : 
                                                    ["id in (?)", options[:ids]]
      update_all [fields_sql, *field_values], where_clause
    end
    
    def update_child_resources(options)
      unless options[:ids].present? || options[:user_id].present?
        raise "user_id or ids must be passed!"
      end
      %w( Dispensary Doctor Lab
          Picture Video Review HelpfulReview
          ConversationMessage 
          WhatAreYouSmokingComment Event CommunityPost  ).each do |bannable|
        bannable.constantize.send(:update_call, options)
      end
    end
    
  end
  
end