Skip to main content

Notice: Workspaces are undergoing maintenance and are temporarily unavailable.

🚀 In our NEW AI Bootcamp you'll build a working app in 28 days, no experience required. Free to all subscription levels.

✨ Earn college credits in Cybersecurity, JS, HTML, CSS and Python

Join the Treehouse affiliate program and earn 25% recurring commission! 🤑

  • Treehouse Logo
    • For Individuals
    • For Businesses
    • For Schools
    • For Libraries
    • For Military
    • All Courses
    • Tracks
    • AI Bootcamp
    • College Credit
    • Techdegree Bootcamps
    • Front End Development
    • Full Stack JavaScript
    • Code Adventures
    • Discord
    • Forum
    • Success Stories
    • Treehouse Links
    • 100 Days of Code
    • Explore
    • Career Toolbox
    • Free Treehouse Near Me
    • Affiliates
    • Blog
    • Support
    • About
    • Learn
    • Beginner's Guide to Coding
    • Data Analysis with SQL & Python
    • Front-End Web Development
    • Python Programming Basics
    • Techdegree Bootcamp Overview
    • UX Design Fundamentals
    • AI Tools for Beginners
  • For Individuals For Businesses For Schools For Libraries For Military
  • All Courses Tracks AI Bootcamp College Credit
  • Techdegree Bootcamps Front End Web Development Full Stack JavaScript
  • Code Adventures Discord Forum Success Stories Treehouse Links 100 Days of Code
  • Explore Career Toolbox Free Treehouse Near Me Affiliates Blog Support About
    Learn Beginner's Guide to Coding Data Analysis with SQL & Python Front-End Web Development Python Programming Basics Techdegree Bootcamp Overview UX Design Fundamentals AI Tools for Beginners
  • Sign In
  • Free Trial
Instagram Twitter Facebook YouTube LinkedIn
Loading banner... Start your free trial at Treehouse
    • Newest
      • Newest
      • Active
      • Unanswered
      • Featured
    • All Topics
      • All Topics
      • • General Discussion
      • • AI
      • • APIs
      • • Coding for Kids
      • • College Credit
      • • Computer Science
      • • CSS
      • • Data Analysis
      • • Databases
      • • Design
      • • Development Tools
      • • Digital Literacy
      • • Game Development
      • • Go Language
      • • HTML
      • • Java
      • • JavaScript
      • • Learning Resources
      • • Machine Learning
      • • No-Code
      • • PHP
      • • Professional Growth
      • • Python
      • • Quality Assurance
      • • React
      • • Ruby
      • • Security
      • • Swift
      • • Vibe Coding
  • Rojina Pradhan
    Rojina Pradhan
    2,681 Points

    I am getting an error in this step: Create a subscription to a magazine, add to subscriber:

    Posted December 20, 2023 9:49pm by Rojina Pradhan
    Rojina Pradhan
    2,681 Points
    • Ruby
    • Active Record Associations in Rails
    • Active Record Associations
    • Has Many Through Associations

    0 Answers

  • Vincent Fuentes
    Vincent Fuentes
    4,466 Points

    How can I can display the has many through association ? not just using the console.

    Posted March 30, 2022 3:01am by Vincent Fuentes
    Vincent Fuentes
    4,466 Points
    • Ruby
    • Active Record Associations in Rails
    • Active Record Associations
    • Has Many Through Associations

    0 Answers

  • calvin hobbs
    calvin hobbs
    172 Points

    Cant associate magazine with subscription.

    Posted January 11, 2019 10:12am by calvin hobbs
    calvin hobbs
    172 Points
    • Ruby
    • Active Record Associations in Rails
    • Active Record Associations
    • Has Many Through Associations

    3 Answers

  • Christopher Phillips
    Christopher Phillips
    10,061 Points

    Confused with naming conventions of symbols (singular vs plural)

    Posted August 3, 2018 8:51am by Christopher Phillips
    Christopher Phillips
    10,061 Points
    • Ruby
    • Active Record Associations in Rails
    • Active Record Associations
    • Has Many Through Associations

    1 Answer

  • Eylon Cohen
    Eylon Cohen
    4,779 Points

    connecting two models with a has_many_through instnacer while updating

    Posted March 5, 2018 11:15am by Eylon Cohen
    Eylon Cohen
    4,779 Points
    • Ruby
    • Active Record Associations in Rails
    • Active Record Associations
    • Has Many Through Associations

    1 Answer

  • Eylon Cohen
    Eylon Cohen
    4,779 Points

    belongs_to_and_has_many vs has_many_through

    Posted March 5, 2018 11:02am by Eylon Cohen
    Eylon Cohen
    4,779 Points
    • Ruby
    • Active Record Associations in Rails
    • Active Record Associations
    • Has Many Through Associations

    1 Answer

Posting to the forum is only allowed for members with active accounts.
Please sign in or sign up to post.

Techdegree

  • Front End Web Development
  • Full Stack JavaScript
SEE ALL

Tracks

  • Learn to Code for Beginners
  • Beginning Python
  • Beginning SQL
  • Beginning Java
SEE ALL

Courses

  • JavaScript Basics
  • Intro to HTML & CSS
  • Python Basics
  • CSS Layout
SEE ALL

About Us

  • About
  • Blog
  • Community
  • Stories
  • Contact
  • Gift Card

Explore

  • Plans
  • Affiliates
  • Perks
  • Shop
  • Free Treehouse Near Me
  • Treehouse for Libraries
  • Treehouse for Businesses

Treehouse is an online technology education platform founded in 2011. Treehouse offers more than 700 self-paced, video-based courses in web development, programming, data analysis, design, and AI, plus two project-based bootcamp programs in Front End Web Development and Full Stack JavaScript. Individual Treehouse plans start at $25 per month and include a 7-day free trial. Treehouse serves individual learners, businesses, schools, and public libraries. Cardholders at participating U.S. public libraries can use Treehouse for free. Select Treehouse courses, offered with University Pathways International, are recommended for college credit by ACE and NCCRS. Treehouse learners earn digital certificates for completed Tracks.

Terms & Conditions · Privacy · © 2026 Treehouse Island, Inc.
  • Twitter
  • YouTube
  • Facebook
  • LinkedIn
  • Instagram
  • Discord