Overrided create action.

app/controllers/application_controller.rb

@@ -1,8 +1,4 @@
 class ApplicationController < ActionController::Base
-  # Prevent CSRF attacks by raising an exception.
-  # For APIs, you may want to use :null_session instead.
-  # protect_from_forgery with: :exception
-
   helper_method :collection, :resource, :current_user
 
   before_action :authenticate!

app/controllers/profiles_controller.rb

@@ -3,6 +3,22 @@ class ProfilesController < ApplicationController
 
   before_action :build_resource, only: :create
 
+  def create
+    respond_to do |format|
+      format.html do
+        if resource.save
+          redirect_to profile_path(@user.id)
+        else
+          render :new
+        end
+      end
+
+      format.js { render :errors unless resource.save }
+
+      format.json { render :errors unless resource.save }
+    end
+  end
+
   private
   def build_resource
     @user = User.new resource_params

config/routes.rb

@@ -1,5 +1,5 @@
 Rails.application.routes.draw do
   resource :session, only: [:create, :destroy]
 
-  resource :profile, only: [:create, :show]
+  resources :profiles, only: [:create, :show]
 end

spec/controllers/profiles_controller_spec.rb

@@ -25,6 +25,54 @@
     end
   end
 
+  describe '#create.js' do
+    let(:user) { double }
+
+    let(:params) { { 'email' => '[email protected]', 'password' => 'bigboobs', 'password_confirmation' => 'bigboobs' } }
+
+    before { expect(User).to receive(:new).with(params).and_return(user) }
+
+    context do
+      before { expect(user).to receive(:save).and_return(true) }
+
+      before { post :create, user: params, format: :js }
+
+      it { should render_template :create }
+    end
+
+    context do
+      before { expect(user).to receive(:save).and_return(false) }
+
+      before { post :create, user: params, format: :js }
+
+      it { should render_template :errors }
+    end
+  end
+
+  describe '#create.html' do
+    let(:user) { stub_model User, id: 1 }
+
+    let(:params) { { 'email' => '[email protected]', 'password' => 'bigboobs', 'password_confirmation' => 'bigboobs' } }
+
+    before { expect(User).to receive(:new).with(params).and_return(user) }
+
+    context do
+      before { expect(user).to receive(:save).and_return(true) }
+
+      before { post :create, user: params, format: :html }
+
+      it { should redirect_to "/profiles/#{user.id}" }
+    end
+
+    context do
+      before { expect(user).to receive(:save).and_return(false) }
+
+      before { post :create, user: params, format: :html }
+
+      it { should render_template :new }
+    end
+  end
+
   context do
     let(:user) { double }