tasks_controller.rb

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

  def move
    if @task.notstarted?
      @task.pending!
    elsif @task.pending?
      @task.complete!
    elsif @task.complete?
      @task.pending!
    end

    respond_to do |format|
      format.js do
        render template: "tasks/move.js.erb"
      end
    end
  end

  # GET /tasks or /tasks.json
  def index
    @tasks = current_user.tasks
  end

  # GET /tasks/1 or /tasks/1.json
  def show
  end

  # GET /tasks/new
  def new
    @task = Task.new
  end

  # GET /tasks/1/edit
  def edit
    respond_to do |format|
      format.html
      format.js do
        render template: "tasks/edit.js.erb"
      end
    end
  end

  # POST /tasks or /tasks.json
  def create
    @task = current_user.tasks.new(task_params)

    respond_to do |format|
      if @task.save
        format.html { redirect_to task_url(@task), notice: "Task was successfully created." }
        format.json { render :show, status: :created, location: @task }
        format.js do
          render template: "tasks/create.js.erb"
        end
      else
        format.html { render :new, status: :unprocessable_entity }
        format.json { render json: @task.errors, status: :unprocessable_entity }
        format.js
      end
    end
  end

  # PATCH/PUT /tasks/1 or /tasks/1.json
  def update
    respond_to do |format|
      if @task.update(task_params)
        format.html { redirect_to task_url(@task), notice: "Task was successfully updated." }
        format.json { render :show, status: :ok, location: @task }
        format.js do
          render template: "tasks/update.js.erb"
        end
      else
        format.html { render :edit, status: :unprocessable_entity }
        format.json { render json: @task.errors, status: :unprocessable_entity }
        format.js
      end
    end
  end

  # DELETE /tasks/1 or /tasks/1.json
  def destroy
    @task.destroy

    respond_to do |format|
      format.html { redirect_to tasks_url, notice: "Task was successfully destroyed." }
      format.json { head :no_content }
      format.js do
        render template: "tasks/destroy.js.erb"
      end
    end
  end

  private

  # Use callbacks to share common setup or constraints between actions.
  def set_task
    @task = Task.find(params[:id])
  end

  # Only allow a list of trusted parameters through.
  def task_params
    params.require(:task).permit(:body, :status)
  end
end