uninitialized constant RecipesController::Category

def new


    @recipe = current_user.recipes.build


    @categories = Category.all.map{ |c| [c.name, c.id] }   <-- saying this lines wrong


  end






  def create

That's got it. Thanks Chris :-D

undefined local variable or method `recipe_params' for #<RecipesController:0x00007ffa3c046490> Did you mean? recipe_path

 def create

    @recipe = Recipe.new(recipe_params)

    

    if @recipe.save

      redirect_to root_path

class RecipesController < ApplicationController
  
  def index
  end
  
  def new
    @recipe = Recipe.new
  end
  
  def create
    @recipe = Recipe.new(recipe_params)
    
    if @recipe.save
      redirect_to root_path
    else 
      render 'new'
    end
  end
  
    private
  
  def book_params
    params.require(:recipe).permit(:title, :description, :rating, :author)
  end
  
end