Error: "undefined method `todo_items' for #<TodoList:0xba229fc4>" when running rspec and when displaying todo_item view

I'm receiving that error just after I added the following code in todo_items view (app/views/todo_items/index.html.erb)

<ul class="todo_items"> <% @todo_list.todo_items.each do |todo_item| %> <li><%= todo_item.content %> </li> <% end %> </ul>

At this time, my Models look like this: app/models/todo_item.rb class TodoItem < ActiveRecord::Base belongs_to :todo_list end

app/models/todo_list.rb class TodoList < ActiveRecord::Base has_many :todo_item validates :title, presence: true validates :title, length: {minimum: 3} validates :description, presence: true validates :title, length: {minimum: 5} end

My Controllers: app/controllers/todo_items_controller.rb class TodoItemsController < ApplicationController def index @todo_list = TodoList.find(params[:todo_list_id]) end end

app/controllers/todo_lists_controller.rb class TodoListsController < ApplicationController before_action :set_todo_list, only: [:show, :edit, :update, :destroy]

# GET /todo_lists # GET /todo_lists.json def index @todo_lists = TodoList.all end

# GET /todo_lists/1 # GET /todo_lists/1.json def show end

# GET /todo_lists/new def new @todo_list = TodoList.new end

# GET /todo_lists/1/edit def edit end

# POST /todo_lists # POST /todo_lists.json def create @todo_list = TodoList.new(todo_list_params)

respond_to do |format|
  if @todo_list.save
    format.html { redirect_to @todo_list, notice: 'Todo list was successfully created.' }
    format.json { render action: 'show', status: :created, location: @todo_list }
  else
    format.html { render action: 'new' }
    format.json { render json: @todo_list.errors, status: :unprocessable_entity }
  end
end

end

# PATCH/PUT /todo_lists/1 # PATCH/PUT /todo_lists/1.json def update respond_to do |format| if @todo_list.update(todo_list_params) format.html { redirect_to @todo_list, notice: 'Todo list was successfully updated.' } format.json { head :no_content } else format.html { render action: 'edit' } format.json { render json: @todo_list.errors, status: :unprocessable_entity } end end end

# DELETE /todo_lists/1 # DELETE /todo_lists/1.json def destroy @todo_list.destroy respond_to do |format| format.html { redirect_to todo_lists_url } format.json { head :no_content } end end

private # Use callbacks to share common setup or constraints between actions. def set_todo_list @todo_list = TodoList.find(params[:id]) end

# Never trust parameters from the scary internet, only allow the white list through.
def todo_list_params
  params.require(:todo_list).permit(:title, :description)
end

end