#new-form
      = form_for @invitation, :url=> invitations_path(), :html => {:class => 'form-inline', :role => 'form'} do |f|
        .form-group
          = f.text_field :email, :type=> 'email', :placeholder=> 'Invite your friends via email', :class=> 'form-control invitation-email'
          = f.hidden_field :mail_text, :value => @invitation_email
        = f.submit :class => 'btn btn-primary submit-email', :value => 'Send'

class InvitationsController < ApplicationController
  authorize_resource
  before_filter :load_invitations, only: [:new, :index]
  before_filter :new_invitation, only: [:new, :index]
  before_filter :default_email, only: [:index]
  #helper_method :default_email

  def create
    Invitation.create!(email: params[:invitation][:email], invited_by: current_user.id, state: 'sent', mail_text: params[:invitation][:mail_text], url: {referrer_name: current_user.name}.to_param)
    redirect_to :back
  end

  def update_email
    @invitation_email = params[:value]
    flash[:updated_invitation_email] = params[:value]
    redirect_to :back
  end

  private

  def invitation_params
    params.require(:invitation).permit!
  end

  def load_invitations
    @invitations ||= current_user.sent_invitations
  end

  def new_invitation
    @invitation  = Invitation.new
  end

  def default_email
    default_text = "default text"
    @invitation_email = flash[:updated_invitation_email].blank?  ?  default_text : flash[:updated_invitation_email]
  end
end