class ReviewsController < ApplicationController

  def new
    session[:return_to] ||= request.referer
    @user = User.find(params[:user_id])
    @review = Review.new
  end

  def create
    @review = Review.create(review_params)
    if @review.save
      redirect_to session.delete(:return_to)
    else
      flash[:error] = trip.errors.full_messages.join('<br>')
      render :new
    end
  end

  def destroy
    review = Review.find(params[:id])
    review.destroy
    redirect_to current_user_profile
  end

  private

  def review_params
    params.require(:review).permit(:rating, :content)
  end

end

class ReviewsController < ApplicationController
  before_action :authenticate_user!, except: [:show, :index]

  def new
    session[:return_to] ||= request.referer
    @user = User.find(params[:user_id])
    @review = Review.new
  end

  def create
    @review = Review.create(review_params)
    if @review.save
      redirect_to session.delete(:return_to)
    else
      flash[:error] = trip.errors.full_messages.join('<br>')
      render :new
    end
  end

  def destroy
    review = Review.find(params[:id])
    review.destroy
    redirect_to current_user_profile
  end

  private

  def review_params
    params.require(:review).permit(:rating, :content)
  end

end

Add authenticate user to reviews controller
Add authenticate user to reviews controller
