No Method error : Login attempts using cookies in Rails Devise

Question

This is the functionality i used for "when a user fails to attempt login twice r thrice".

class Users::SessionsController < Devise::SessionsController

prepend_before_filter :require_no_authentication, :only => [ :new, :create ]

prepend_before_filter :allow_params_authentication!, :only => :create

prepend_before_filter { request.env["devise.skip_timeout"] = true }

def new

cookies[:login_attempts] = cookies[:login_attempts] || 0

   **unless params[:user][:email].blank?**

  if  cookies[:email].eql?(params[:user][:email])

    cookies[:login_attempts] = cookies[:login_attempts].to_i + 1

  else

    cookies[:login_attempts] = 0

  end

end

self.resource = resource_class.new(sign_in_params)

clean_up_passwords(resource)

respond_with(resource, serialize_options(resource))

end

# POST /resource/sign_in

def create

cookies[:email] =   params[:user][:email]

self.resource =  warden.authenticate!(auth_options)

if cookies[:email]

  cookies[:login_attempts] = 0

  set_flash_message(:notice, :signed_in) if is_navigational_format?

  sign_in(resource_name, resource)

  respond_with resource, :location => after_sign_in_path_for(resource)

else

  unless params[:user][:email].blank?

    if   cookies[:email].eql?(params[:user][:email])

      cookies[:login_attempts] = cookies[:login_attempts].to_i + 1

    else

      cookies[:login_attempts] = 0

    end

  end

  render :new

end

end end

In sessions/new:

   <% if cookies[:login_attempts].to_i >= 3 %>
                  <div><%= raw recaptcha_tags %></div>
              <% end %>

Entire functionality is working fine but when redirected to new,

Im getting the following error:

*NoMethodError in Users::SessionsController#new

undefined method `[]' for nil:NilClass

The error is shown in "unless params[:user][:email].blank?" line in above controller new method.*

Please try to help me out..

Answer 1

Your params[:user] returns nil object, a.k.a it does not exist. You shoudl check it first:

if params[:user] && cookies[:email].eql?(params[:user][:email])