class MembersController < ApplicationController

  def index
    @organizations = Organization.all
  end

  def show
    # Get member
    @member = Member.where(:membership_number => params[:id]).first
    raise ActiveRecord::RecordNotFound and return if @member.nil?
    # Get organization
    @organization = @member.organization
  end
  
end

class MembersController < ApplicationController

  def index
    @organizations = Organization.order(:name)
  end

  def show
    # Get member
    @member = Member.where(:membership_number => params[:id]).first
    raise ActiveRecord::RecordNotFound and return if @member.nil?
    # Get organization
    @organization = @member.organization
  end
  
end

Order organizations by name in the main list
Order organizations by name in the main list
