Installed authentication-zero

app/controllers/identity/email_verifications_controller.rb

@@ -0,0 +1,26 @@
+class Identity::EmailVerificationsController < ApplicationController
+  skip_before_action :authenticate, only: :show
+
+  before_action :set_user, only: :show
+
+  def show
+    @user.update! verified: true
+    redirect_to root_path, notice: "Thank you for verifying your email address"
+  end
+
+  def create
+    send_email_verification
+    redirect_to root_path, notice: "We sent a verification email to your email address"
+  end
+
+  private
+    def set_user
+      @user = User.find_by_token_for!(:email_verification, params[:sid])
+    rescue StandardError
+      redirect_to edit_identity_email_path, alert: "That email verification link is invalid"
+    end
+
+    def send_email_verification
+      UserMailer.with(user: Current.user).email_verification.deliver_later
+    end
+end