_task.json.jbuilder has invalid arguments for project_task_url

A reader of the Japanese edition found that _task.json.jbuilder has invalid arguments for project_task_url.

everydayrails-rspec-2017/app/views/tasks/_task.json.jbuilder

json.url project_task_url([task.project, task], format: :json)

It should be:

json.url project_task_url(task.project, task, format: :json)

The current test fails if tasks_controller_spec.rb has render_views views option:

 require 'rails_helper'
 
 RSpec.describe TasksController, type: :controller do
+  render_views
   include_context "project setup"

Failures:

  1) TasksController#create responds with JSON formatted output
     Failure/Error: json.url project_task_url([task.project, task], format: :json)
     
     ActionView::Template::Error:
       No route matches {:action=>"show", :controller=>"tasks", :format=>:json, :project_id=>[#<Project id: 1, name: "Project 2", description: "A test project.", due_on: "2021-03-06", created_at: "2021-02-27 07:53:57.565109000 +0000", updated_at: "2021-02-27 07:53:57.565109000 +0000", user_id: 1, completed: nil>, #<Task id: 1, name: "New test task", project_id: 1, completed: nil, created_at: "2021-02-27 07:53:57.574235000 +0000", updated_at: "2021-02-27 07:53:57.574235000 +0000">]}, missing required keys: [:id]
       Did you mean?  project_tasks_url
                      project_task_path
                      project_tasks_path
                      new_project_task_url
     # ./app/views/tasks/_task.json.jbuilder:2:in `_app_views_tasks__task_json_jbuilder___3745737086157069224_66100'
     # ./app/views/tasks/show.json.jbuilder:1:in `_app_views_tasks_show_json_jbuilder__4444021816594691676_66060'
     # ./app/controllers/tasks_controller.rb:34:in `block (2 levels) in create'
     # ./app/controllers/tasks_controller.rb:31:in `create'
     # ./spec/controllers/tasks_controller_spec.rb:20:in `block (3 levels) in <top (required)>'
     # ------------------
     # --- Caused by: ---
     # ActionController::UrlGenerationError:
     #   No route matches {:action=>"show", :controller=>"tasks", :format=>:json, :project_id=>[#<Project id: 1, name: "Project 2", description: "A test project.", due_on: "2021-03-06", created_at: "2021-02-27 07:53:57.565109000 +0000", updated_at: "2021-02-27 07:53:57.565109000 +0000", user_id: 1, completed: nil>, #<Task id: 1, name: "New test task", project_id: 1, completed: nil, created_at: "2021-02-27 07:53:57.574235000 +0000", updated_at: "2021-02-27 07:53:57.574235000 +0000">]}, missing required keys: [:id]
     #   Did you mean?  project_tasks_url
     #                  project_task_path
     #                  project_tasks_path
     #                  new_project_task_url
     #   ./app/views/tasks/_task.json.jbuilder:2:in `_app_views_tasks__task_json_jbuilder___3745737086157069224_66100'

Thank you for reporting this. I think I'm going to keep this issue open for others who may find it, but leave it unfixed for now. Due to the branching strategy I took for building out each chapter's source code changes, I have to apply the change to each branch and handle several merge conflicts as I go. This adds risk to breaking the sample code, especially in later chapters.