Getting all notes to display on the front-end - ruby-on-rails

Question

I built out a recipe book for my wife and her family and I seem to be having issues with getting the notes that people add to display, mainly when someone posts a note it replaces the previous note with the new one instead of displaying all of the notes. I tried adding a notes table and controller and all of that and it kept throwing errors and just wouldn't work. So I have tried to make a model method to just show all of the notes but it gives me an error in my update action. This is my first real project out of my Bootcamp so I am still fairly green at all of this but I want to show my controller and model with the method that I thought that would work. I don't know if I was going down the right track with the model and controller and just didn't quite get all of the syntax right or if the model method is the correct path.
Model:
class Recipe < ApplicationRecord
validates :name, presence: true
def ingredients_list
ingredients.split(", ")
end
def directions_list
directions.split(". ")
end
def recipe_notes
recipe_notes = notes.all
end
end
Controller:
class RecipesController < ApplicationController
def index
recipes = Recipe.all
render json: recipes
end
def show
recipe = Recipe.find_by(id: params[:id])
render json: recipe
end
def create
recipe = Recipe.new(
name: params["name"],
contributor: params["contributor"],
ingredients: params["ingredients"],
directions: params["directions"],
category: params["category"]
)
if recipe.save
render json: recipe
else
render json: {errors: recipe.errors.full_messages},
status: 422
end
end
def update
recipe_id = params["id"]
recipe = Recipe.find_by(id: recipe_id)
recipe.name = params["name"] || recipe.name
recipe.contributor = params["contributor"] || recipe.contributor
recipe.ingredients = params["ingredients"] || recipe.ingredients
recipe.directions = params["directions"] || recipe.directions
recipe.category = params["category"] || recipe.category
recipe.notes = params["notes"] || recipe.notes
if recipe.save
render json: recipe
else
render json: {errors: recipe.errors.full_messages},
status: 422
end
end
def destroy
recipe_id = params["id"]
recipe = Recipe.find_by(id: recipe_id)
recipe.destroy
render json: {message: "Recipe Deleted"}
end
end
This was my schema before I removed all of the notes stuff:
create_table "notes", force: :cascade do |t|
t.integer "recipe_id"
t.string "note"
t.datetime "created_at", precision: 6, null: false
t.datetime "updated_at", precision: 6, null: false
end
create_table "recipes", force: :cascade do |t|
t.string "name"
t.string "ingredients"
t.string "directions"
t.string "category"
t.string "contributor"
t.datetime "created_at", precision: 6, null: false
t.datetime "updated_at", precision: 6, null: false
t.string "notes"
end
This was the model before I tried to move to a model method:
class Recipe < ApplicationRecord
validates :name, presence: true
has_many :notes
def ingredients_list
ingredients.split(", ")
end
def directions_list
directions.split(". ")
end
end
class Note < ApplicationRecord
belongs_to :recipe
end
This was the controller that I set up for the notes before I removed it:
class NotesController < ApplicationController
def show
note = Note.find_by(id: params[:id])
render json: note
end
end
I also had the route set up for a show action too