routes.rb

IpoWeb::Application.routes.draw do

  authenticated :login do
    root :to => "dashboards#index"
  end

  root :to => "home#index"

  devise_for :logins, class_name: "Login"

  devise_scope :login do
    post 'logins/sign_up'  => "devise/registrations#create"
    get 'logins/sign_in' => 'devise/sessions#new'
    post 'logins/sign_in' => 'devise/sessions#create'
    get 'logins/sign_out' => 'devise/sessions#destroy'
    get 'logins/edit' => 'devise/registrations#edit', as: 'edit_login_registration'
    put 'logins/:id' => 'devise/registrations#update', as: 'login_registration'
  end

  resources :projects_setup, path: "/projects/setup", only: [:index, :show, :update]
  resources :projects do
    resources :project_media, as: 'media', path: 'media', only: [:create]
  end
  resources :project_media, only: [:show, :destroy]

  match '/home/autocomplete' => "home#autocomplete"

  resources :students_setup, path: "/students/setup", only: [:index, :show, :update]
  get '/students_setup/project_sessions/:project' => 'students_setup#project_sessions'
  get '/projects_setup/application_deadline/:id' => 'projects_setup#application_deadline'

  resources :students
  resources :dashboards, only: [:index]
  resources :sessions
  get "/unique/:model/:attribute" => "uniqueness#validate"

  put "dashboards/update_login" => "dashboards#update_login"

  mount Refinery::Core::Engine, :at => '/'

  Refinery::Core::Engine.routes.draw do
    devise_scope :refinery_user do
      get "refinery/login", :to => "sessions#new", :as => :login
      get "refinery/logout", :to => "sessions#destroy", :as => :logout
      get "refinery/users/register" => 'users#new', :as => :new_signup
      post "refinery/users/register" => 'users#create', :as => :signup
    end

    devise_for :refinery_user, :class_name => 'Refinery::User',
               :path => "refinery/users",
               :controllers => { :registrations => 'refinery/users' },
               :skip => [:registrations],
               :path_names => { :sign_out => 'logout',
                                :sign_in => 'login',
                                :sign_up => 'register' }
  end
end

uniqueness_controller.rb

class UniquenessController < ApplicationController
 
  def validate
    binding.pry
    model = params[:model].classify.constantize
    unique = model.where("#{params[:attribute]} = ?", params[:value]).count == 0
    render text: unique
  end
    
end