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Learn
  • Learn And The Power Of Community
  • Intro
    • learn-co-curriculum/welcome-to-learn-verified
    • learn-co-curriculum/your-first-lab
    • learn-co-curriculum/environment-setup
  • Intro to tic tac toe
    • matz-readme
    • what-is-a-program?
    • hello world
    • Intro to irb
    • Reading-error-messages
    • Data-types
    • variable
    • Variable-assignment lab
    • String interpolation
    • Interpolation-super-power
    • Welcome to tic tac toe
    • Array
    • Tic tac toe board
    • Intro to methods
    • Puts print and return
    • Intro-to-tdd-rspec-and-learn
    • Methods and arguments
    • Say hello (lab)
    • Methods-default-arguments
    • ttt-3-display_board-example
    • ttt-4-display-board-rb
    • Intro-to-cli-applications
    • Greeting-cli
    • cli-applications in Ruby
    • Ruby-gets-input
    • Tic tac toe move
    • Truthiness-in-ruby-readme
    • booleans
    • conditional (if)
    • ttt-6-position-taken
    • ttt-7-valid-move
    • rspec-fizzbuzz
    • Looping-introduction
    • Loop
    • while-and-until-loop
    • Tic Tac Toe Turn lab
    • looping-while-until lab
    • Tic Tac Toe Play Loop (lab)
    • Tic Tac Toe Current Player (lab)
    • Intro to ruby iterators
    • Nested Arrays
    • Boolean Enumerators
    • Search Enumerators
    • Tic Tac Toe Game Status
    • tic-tac-toe
  • OOP tic tac toe
    • intro to oop
    • Intro-to-classes-and-instances
    • Classes-and-instances-lab
    • Instance-methods
    • Instance-methods-lab
    • Object Attributes
    • object-attributes-lab
    • Object Initialization
    • Object-initialize-lab
    • oop barking dog lab
    • Procedural-vs-oop
    • oop tic tac toe
  • Git and github
    • Intro to Version Control
    • Git Repository Basics
    • Git-basics-quiz
    • Forks-and-clones
    • Git Remotes and Github
    • Git Remotes and Github Codealong
    • Thinking Ahead: GitHub as Career Differentiator
    • Github Pull Requests
    • Git Collaboration
    • Git-collaboration-quiz
    • Git Basics Quiz
  • HTML
    • A-quick-tour-of-the-web
    • The-web-is-made-of-strings
    • What-makes-the-web-possible?
    • html-introduction
    • Your first-html-tag-lab
    • Nested-tags-and-attributes
    • Well-formed-html-document-lab
    • HTML elements types overview
    • Researching-HTML-elements
    • Separation-of-content-and-presentation
  • CSS
    • Introduction-to-css
    • introduction-to-css-code-along
  • Procedural Ruby
    • Regex-what-is-a-pattern
    • Regex-basics
    • Regex-lab
    • Regex-match-scan-grep-methods
    • learn-co-curriculum/method-arguments-lab
    • Method-scope
    • Return Values Lab
    • Debugging-with-pry
    • Method-scope-lab
    • Truthiness-code-challenge
    • If Statements Lab
    • Case-statements
    • Case-statements-quiz
    • Logic and Conditionals Quiz
    • Ternary Operators and Statement Modifiers lab
    • Looping Lab
    • looping-quiz
    • learn-co-curriculum/looping-times
    • countdown-to-midnight lab
    • Array introduction
    • Using Arrays
    • Array-CRUD-lab
    • Array-methods
    • Array-methods-lab
    • Square array lab
    • Collect and Return Values
    • Collect Lab
    • Badges and Schedules Lab
    • Oxford comma lab
    • Deli counter lab
    • Reverse Each Word Lab
    • Yield-and-blocks
    • Each Lab
    • Return from Yield Statements
    • My All? Lab
    • My Find Lab
    • Cartoon Collections Lab
    • Enumerators Code Challenge
    • Prime? Lab
    • Sorting
    • Sorting Lab
    • Introduction to Hashes
    • Using Hashes lab
    • Ruby-symbols
    • Hash iteration
    • Hash Iteration Lab
    • Hash Iteration with Collect
    • Intro to Nested Hashes
    • Building Nested Hashes
    • Building Nested Hashes Lab
    • Nested Hash Iteration
    • Nested Hashes Lab
    • Multitype Collections Lab
    • Iterating over Nested Hashes Codealong
    • Other Hashes Codealong
    • Hashes Manipulation Lab
  • OOP Ruby
    • OO Ruby Video: Object Orientation Overview
    • Object Accessors
    • Instance Variables lab
    • Video Review: Object Properties
    • Meowing Cat
    • Intro to Object Orientation - Ruby
    • oo basics lab
    • OO Basics with Class Constants
    • Self
    • OO School Domain lab
    • OO Counting Sentences lab
    • Class Variables and Methods
    • Class Variables and Methods Lab
    • Remembering Objects
    • Puppy Lab
    • Advanced Class Methods
    • Advanced Class Methods Lab
    • Video Review: Object Models
    • OO Email Parser lab
    • OO Anagram Detector lab
    • OO Cash Register lab
    • Intro to Object Relationships
    • Belongs to Object Lab
    • Has Many Object
    • Has Many Object Lab
    • Collaborating Objects Review
    • Collaborating Objects Lab
    • OO My Pets
    • oo kickstarter lab
    • OO Banking lab
    • Has Many Objects Through
    • Has Many Objects Through Lab
    • Intro to Inheritance
    • Intro to Inheritance Lab
    • Super
    • Super Lab
    • Intro to Modules
    • Intro to Modules Lab
    • Mass Assignment
    • Mass Assignment and Metaprogramming
    • Mass Assignment Lab
    • Custom Errors lab
    • OO Triangle lab
  • Scraping and project
    • Gems and Bundler
    • Scraping
    • Scraping Lab
    • Kickstarter Scraping Lab
    • Video Review: Object Orientation and Scraping
    • OO Ruby Object Orientation Video Review
    • Music Library CLI
    • Video Review: Music Library CLI
    • Tic-tac-toe with AI project
    • Student Scraper
    • CLI Data Gem Portfolio Project
    • CLI Data Gem Walkthrough
    • CLI Data Gem Walkthrough: Creating a CLI Scraper Gem
    • Common Anti-Patterns in CLI Data Gem
    • Student Example 1: Refactoring CLI Gem
    • Student Example 2: Refactoring CLI Gem
  • SQL
    • What is SQL
    • SQL Intro and Installation
    • SQL Database Basics
    • SQL Databases and Text Editors
    • SQL Data Types
    • SQL Inserting, Updating, and Selecting
    • Basic SQL Queries
    • SQL Aggregate Functions
    • SQL Aggregate Functions Lab
    • SQL Bear Organizer Lab
    • Edgar Codd and Table Relations
    • Table Relations
    • SQL JOINS
    • SQL Complex Joins
    • SQL Join Tables
    • Grouping and Sorting Data
    • SQL Joins Review Lectures
    • SQL Crowdfunding Lab
    • SQL Library Lab
    • Pokemon Scraper Lab
  • ORM And Active record
    • Why an ORM is Useful
    • Mapping Ruby Classes to Database Tables
    • Mapping Classes to Tables Lab
    • Mapping Database Tables to Ruby Objects
    • Mapping Database Rows to Objects Lab
    • Updating Records in an ORM
    • Updating Records in an ORM Lab
    • Preventing Record Duplication
    • ORMs Lab: Bringing It All Together lab
    • Dynamic ORMs
    • Dynamic ORMs with Inheritance
    • ActiveRecord Mechanics
    • Translating from ORM to ActiveRecord
    • Intro to Rake
    • Mechanics of Migrations
    • Writing Our Own Migrations
    • Migrations and Active Record Lab
    • ActiveRecord CRUD Lab
    • Advanced Finding Lab
    • ActiveRecord Associations
    • ActiveRecord Associations Lab
    • ActiveRecord Associations Lab II
    • ActiveRecord Associations Video Review
    • ActiveRecord Associations Video Review II
    • Video Review: Aliasing ActiveRecord Associations
    • Video Review: Blog CLI with ActiveRecord and Associations
  • Rack
    • How the Internet Works
    • Increasing Layers of Abstraction
    • Inspecting the Web with Rack (lab)
    • The HTTP Request
    • Dynamic URL Routes
    • Dynamic Web Apps with Rack (lab)
    • Rack Responses Lab
    • Rack Routes and GET Params Lab
    • HTTP Status Codes
    • Dynamic URLs and Status Codes Lab
    • Video Review: How The Web Works, Pt 1
    • Video Review: How the Web Works, Pt 2
  • Html
    • How the Web Works
    • Site Planning
    • HTML Fundamentals
    • HTTP Status Codes
    • video review how the web works pt 1
    • How the Web Works, Part 2: Overview
    • Setting Up a New Site
    • Document Structure
    • Text Formatting
    • HTML Tables
    • Html-images
    • HTML Links
    • Html backing-up changes
    • HTML Validation
    • Quiz - HTML Fundamentals
    • Dev Tools Super Power
    • HTML Lists
    • Html issue bot 9000 (lab)
    • HTML Forms and Iframes
    • HTML Map and Contact Form Code-along
    • HTML5 Media
    • HTML5 Video Embed Code-Along
    • HTML5 Semantic Elements
    • HTML5 Semantic Containers Code-along
    • HTML5 Quiz
  • CSS
    • CSS Fundamentals
    • CSS Styling Code Along
    • My Little Rainbow
    • CSS Kitten Wheelbarrow
    • CSS Graffiti Override Lab
    • CSS Issue Bot 9000
    • Your first deployment
    • The Box Model
    • Layout Types
    • Float
    • Clearfix
    • Centering
    • Column Structure
    • CSS Columns Code Along Exercise (lab)
    • Box Model & Page Layout
    • Using Z Index
    • Positioning
    • ZHW Shoes Layout (lab)
    • Zetsy (lab)
    • CSS Box Style Code Along
    • Animal Save (lab)
    • Building Responsive Sites
    • Intro to Responsive Media
    • CSS Media Queries
    • Working with Responsive Type
    • Responsive layout
    • The Viewport Property
    • Responsive Features Code-Along (lab)
    • Bootstrap Introduction
    • Bootstrap Code-Along
    • Bootstrap Grid System
    • Grid Layout Code-Along
    • Bootstrap Navbar Code-Along
  • Sinatra
    • What is Sinatra?
    • Sinatra From Scratch
    • Using the Shotgun Development Server (lab)
    • Sinatra Basics
    • Sinatra Hello World Basics (lab)
    • Routes in Sinatra
    • Sinatra Routes Lab
    • Intro To MVC
    • Sinatra MVC File Structure (lab)
    • Sinatra Views: Using ERB
    • Sinatra Views (lab)
    • Sinatra Basic Views Lab
    • Sinatra Views Lab II
    • Intro To Capybara
    • Dynamic Routes in Sinatra
    • HTML Forms and Params
    • Passing Data Between Views and Controllers in Sinatra
    • Sinatra Forms Lab
    • Sinatra Yield Readme
    • Integrating Models Sinatra Code-along
    • Sinatra MVC Lab - Pig Latinizer
    • Sinatra Basic Forms Lab
    • Sinatra Forms
    • Nested Forms Readme
    • Sinatra Nested Forms Lab: Pirates!
    • Lab Review-- Sinatra Nested Forms Lab: Pirates
    • Sinatra Nested Forms Lab: Superheroes!
    • Sessions and Cookies
    • Mechanics of Sessions
    • Sinatra Basic Sessions Lab
    • Using Sessions
    • Sinatra and Active Record CRUD
    • Sinatra Activerecord Setup
    • Sinatra ActiveRecord CRUD
    • User Authentication in Sinatra
    • Sinatra Sessions Lab - User Logins
    • Securing Passwords
    • Secure Password Lab
    • Sinatra Authentication- Overview
    • RESTful Routes
    • Restful Routes Basic Lab
    • Sinatra ActiveRecord Associations: Join Tables
    • Using Tux in Sinatra with ActiveRecord
    • ActiveRecord Associations in Sinatra
    • Sinatra Multiple Controllers
    • Sinatra and Active Record: Associations and Complex Forms
    • Sinatra Playlister (lab)
    • Welcome to NYC Sinatra! (lab)
    • Building a Site Generator, Part 1- Overview
    • Building a Site Generator, Part 2- Overview
    • Fwitter Group Project
  • Rails
    • Welcome To Rails
      • Rails Application Basics
      • Rails Static Request
      • Rails Hello World Lab
      • Rails Model View Controller
      • Intro to Rails- Overview
    • Intro to REST
    • Active Record Models and Rails
    • ActiveRecord Model Rails Lab
    • RESTful Index Action Lab
    • Rails Dynamic Request
    • Rails Dynamic Request Lab
    • Rails URL Helpers
    • Rails URL Helpers Lab
    • Rails form_tag
    • Rails form_tag Lab
    • Create Action
    • Create Action Lab
    • Index, Show, New, Create Lab
    • Edit/Update Action
    • form_for on Edit
    • Strong Params Basics
    • form_for Lab
    • Rails Generators
    • CRU with form_for Lab
    • Resource and Scaffold Generator
    • Rails Blog scaffold
    • Todo mvc assets and managing lists
    • Rails Forms Overview
    • ActiveRecord Validations
    • ActiveRecord Validations Lab
    • Validations in Controller Actions
    • Validations In Controller Actions Lab
    • Validations with form_tag
    • Validations with form_for
    • DELETE Forms and Requests
    • Testing in Rails
    • Validations with form_tag
    • CRUD With Validations Lab
    • Join the Fun rails
    • Activerecord lifecycle reading
    • Displaying Associations Rails
    • Active Record Associations Review
    • Forms And Basic Associations Rails
    • Forms And Basic Associations Rails Lab
    • Basic Nested Forms
    • Displaying Has Many Through Rails
    • Displaying Has Many Through Rails Lab
    • Has Many Through Forms Rails
    • Has Many Through Forms Rails Labs
    • Has Many Through in Forms Lab Review- Overview
    • Deep Dive into Nested Forms- Overview
    • Layouts And Templates in Rails
    • Rails Layouts And Templates Lab
    • Simple Partials
    • Simple Partials Lab
    • Partials with Locals
    • Partials with Locals
    • Refresher on MVC
    • Refactoring Views With Helpers
    • Refactoring Views With Helpers Lab
    • Model Class Methods
    • Optimal Queries using Active Record (lab)
    • Routing And Nested Resources
    • Nested Resource Routing Lab
    • Modifying Nested Resources
    • Modifying Nested Resources Lab
    • Namespaced Routes
    • Namespaced Routes Lab
    • Todomvc 2 lists have items
    • TodoMVC 3: Mark Items Complete
    • Todomvc 4 refactoring with partials and helpers
    • Todomvc 5 deleting items
    • Introduction to Authentication and Authorization
      • Cookies and sessions
      • Cookies and Sessions Lab
      • Sessions Controller
      • Sessions Controller Lab
      • Login Required Readme
      • Login Required Lab
      • Using has_secure_password
      • Has_secure_password lab
      • Authentication- Overviewn
      • OmniAuth
      • Omniauth Lab
      • Omniauth review lecture in todomvc
      • Authentication and authorization recap and gems
    • Rails Amusement Park lab
    • How to Find Gems
  • JavaScript
    • Intro to JavaScript
      • JavaScript Data Types
      • JavaScript Data Types Quiz
      • JavaScript Variables
      • JavaScript Comparisons
      • Conditionals
      • Logical Operators
      • Functions
      • Intro to Debugging
      • Intro to Testing
      • JavaScript Basics Quiz
    • Scope
      • Scope chain
      • JavaScript Practice Scope Lab
      • Lexical scoping
      • Errors and Stack Traces
      • Hoisting
    • Arrays And Objects
      • Objects
      • JavaScript: Objects and Arrays Quiz
      • Object Iteration
      • JavaScript Logging
      • Traversing Nested Objects
      • Filter
      • Map
    • Functions Revised
      • First-Class Functions Lab
      • First-Class Functions
      • First-Class Functions Practice
      • First-Class Functions Practice Lab
    • OOP
      • Creating Objects
      • Object Methods and Classes
      • Using Prototypes
      • Using Classes in Javascript
      • JavaScript This Walkthrough
      • This Code-along
      • Bind, Call, and Apply Readme
      • Bind, Call, Apply Lab
      • Object Relations
      • Association Methods in Javascript
      • Class Relations Lab
      • JavaScript Closures and Higher Order Functions
      • Closures Lab
      • JavaScript Arrow Functions
      • Daily Lunch Lab
    • DOM
      • Introduction to the DOM
      • Introduction to the DOM Lab
      • More on the DOM
      • Creating and Inserting DOM Nodes
      • The DOM Is a Tree
      • Listening to Nodes
      • Modify HTML With jQuery
      • Modifying HTML Lab
      • jQuery Selectors
      • Document.ready
      • Acting On Events Lab
      • DOM Quiz
    • Templates
      • Introduction to CSS
      • CSS Quiz
      • CSS Libraries
      • CSS Libraries Lab
      • Intro to Templates
      • Template Engines
      • Template Engines Lab
      • Advanced Templating
      • Advanced Templating Lab
    • Asynchronous JavaScript
      • Intro to XHR Code Along
      • Hitting APIs Lab
      • Advanced AJAX Lab
      • AJAX and Callbacks
      • AJAX and Callbacks Lab
      • REST Refresher
      • REST Quiz
      • Fetch
      • JavaScript fetch() Lab
      • Intro to Mocha
      • Testing with Spies
      • Testing with Mocks and Stubs
  • Rails and JavaScript
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On this page
  • Objectives
  • Video
  • Code:
  1. Rails

Todomvc 2 lists have items

PreviousNamespaced Routes LabNextTodoMVC 3: Mark Items Complete

Last updated 5 years ago

Objectives

  1. Giving Lists many items.

  2. Showing items of a list.

  3. Building a Nested Resource Form for Creating Items in a List

  4. Creating an Item associated with a list.

  5. Adding validations.

  6. Looking at ActiveModel::Errors

  7. Rendering an invalid instance from a controller action.

  8. Showing custom errors behavior.

Video

<iframe width="100%" height="720" src="" frameborder="0" allowfullscreen></iframe>

This video is meant to be a review of the second set of topics in Ruby on Rails.

There will be more videos building out the rest of TODOMVC.

Code:

https://www.youtube.com/embed/OsinhhQLmRk?rel=0&showinfo=0
MP4
Start of Lecture
End of Lecture