rails-spa-controller.rb

class TasksController < ApplicationController
  before_action :set_task, only: %i[ update destroy ]

  # GET /tasks
  def index
    @tasks = Task.all
  end

  # POST /tasks
  def create
    @task = Task.new(task_params)

    if @task.save
      render json: Task.all, status: :created
    else
      render status: :unprocessable_entity
    end
  end

  # PATCH/PUT /tasks/1
  def update
    if @task.update(task_params)
      render json: Task.all, status: :ok
    else
      render status: :unprocessable_entity
    end
  end

  # DELETE /tasks/1
  def destroy
    @task.destroy
    render json: Task.all, status: :ok
  end

  private
    def set_task
      @task = Task.find(params[:id])
    end

    def task_params
      params.require(:task).permit(:title, :checked)
    end
end