❄️ Winter Sale - Ends Soon! ❄️ Take 50% off your first 6 months! (new subscribers only, renews at regular price).

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

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

  • Treehouse Logo
  • Plans
    Chevron
    • For Individuals
    • For Businesses
    • For Schools
    • For Libraries
    • For Military
  • Library
    Chevron
    • All Courses
    • Tracks
    • College Credit
  • Techdegree
    Chevron
    • Overview
    • Front End Development
    • Full Stack JavaScript
    • Data Analysis
    • UX Design
    • Python
  • Community
    Chevron
    • Code Adventures
    • Discord
    • Forum
    • Success Stories
    • Treehouse Links
    • 100 Days of Code
  • Resources
    Chevron
    • Explore
    • Career Toolbox
    • CodeForward
    • Free Treehouse Near Me
    • Jobs
    • 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 College Credit
  • Overview Front End Web Development Full Stack JavaScript Python Development Data Analysis UX Design
  • Code Adventures Discord Forum Success Stories Treehouse Links 100 Days of Code
  • Explore Career Toolbox CodeForward Free Treehouse Near Me Jobs 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
    • 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
  • Barış Yazıcı
    Barış Yazıcı
    1,659 Points

    Rails 4

    Posted August 21, 2015 11:05pm by Barış Yazıcı
    Barış Yazıcı
    1,659 Points
    • Ruby
    • Advanced Social Features in Ruby on Rails
    • Uploading Files
    • Cleaning up

    1 Answer

  • askariabdurrahman
    askariabdurrahman
    1,610 Points

    Is there any way to do video uploads?

    Posted June 27, 2015 7:51am by askariabdurrahman
    askariabdurrahman
    1,610 Points
    • Ruby
    • Advanced Social Features in Ruby on Rails
    • Uploading Files
    • How Do File Uploads Work?

    0 Answers

  • Marcus Baron
    Marcus Baron
    38 Points

    I've added all the code up until the very last step in the video, whereupon i get error : undefined method "pictures"

    Posted April 20, 2015 11:07pm by Marcus Baron
    Marcus Baron
    38 Points
    • Ruby
    • Advanced Social Features in Ruby on Rails
    • Create an Image Gallery
    • Creating Albums and Pictures

    1 Answer

  • Devin Scheu
    Devin Scheu
    66,191 Points

    Ruby Help

    Posted March 6, 2015 3:43am by Devin Scheu
    Devin Scheu
    66,191 Points
    • Ruby
    • Advanced Social Features in Ruby on Rails
    • Create an Image Gallery
    • Extracting Helper Methods

    1 Answer

  • Adam Zuckerberg
    Adam Zuckerberg
    22,248 Points

    This seems to fail now due to this Paperclip::Errors::MissingRequiredValidatorError with Rails 4

    Posted March 2, 2015 9:28pm by Adam Zuckerberg
    Adam Zuckerberg
    22,248 Points
    • Ruby
    • Advanced Social Features in Ruby on Rails
    • Uploading Files
    • Attaching Files: Part 2

    1 Answer

  • Adam Zuckerberg
    Adam Zuckerberg
    22,248 Points

    Why do statuses belong to documents?

    Posted March 2, 2015 9:04pm by Adam Zuckerberg
    Adam Zuckerberg
    22,248 Points
    • Ruby
    • Advanced Social Features in Ruby on Rails
    • Uploading Files
    • Attaching Files: Part 1

    1 Answer

  • Seph Cordovano
    Seph Cordovano
    17,400 Points

    Extra Credit Resources?

    Posted February 23, 2015 10:44pm by Seph Cordovano
    Seph Cordovano
    17,400 Points
    • Ruby
    • Advanced Social Features in Ruby on Rails
    • Activity Feeds
    • Adding Pagination

    0 Answers

  • Seph Cordovano
    Seph Cordovano
    17,400 Points

    Trouble saving Handlebars

    Posted February 23, 2015 2:54pm by Seph Cordovano
    Seph Cordovano
    17,400 Points
    • Ruby
    • Advanced Social Features in Ruby on Rails
    • Push Updates
    • JavaScript Templates

    0 Answers

  • Seph Cordovano
    Seph Cordovano
    17,400 Points

    "redirection forbidden:" error >> In case it helps anyone on this section

    Posted February 20, 2015 6:24am by Seph Cordovano
    Seph Cordovano
    17,400 Points
    • Ruby
    • Advanced Social Features in Ruby on Rails
    • Uploading and Resizing Images
    • Creating Rake Tasks

    0 Answers

  • Mike Mayer
    Mike Mayer
    2,151 Points

    Complete the method that would add a breadcrumb named "Home" in the controller. add__"Home" A: 'add breadcrumb'?

    Posted January 19, 2015 12:06am by Mike Mayer
    Mike Mayer
    2,151 Points
    • Ruby
    • Advanced Social Features in Ruby on Rails
    • Create an Image Gallery
    • Breadcrumbs

    2 Answers

  • Joshua Söhn
    PLUS
    Joshua Söhn
    Courses Plus Student 186 Points

    Avoid duplicated results

    Posted January 18, 2015 5:17pm by Joshua Söhn
    Joshua Söhn
    Courses Plus Student 186 Points
    • Ruby
    • Advanced Social Features in Ruby on Rails
    • Activity Feeds
    • Displaying Activity

    1 Answer

  • Rachel Bird
    Rachel Bird
    11,968 Points

    Can't add breadcrumbs to my app

    Posted January 10, 2015 2:00pm by Rachel Bird
    Rachel Bird
    11,968 Points
    • Ruby
    • Advanced Social Features in Ruby on Rails
    • Create an Image Gallery
    • Breadcrumbs

    1 Answer

  • Kiyomi Li
    Kiyomi Li
    22,436 Points

    Can't get the Handlebars dropdown menu to appear

    Posted December 9, 2014 10:32pm by Kiyomi Li
    Kiyomi Li
    22,436 Points
    • Ruby
    • Advanced Social Features in Ruby on Rails
    • Push Updates
    • JavaScript Templates

    0 Answers

  • Milos Rujevic
    seal-mask
    .a{fill-rule:evenodd;}techdegree
    Milos Rujevic
    Full Stack JavaScript Techdegree Student 39,661 Points

    Create the params hash if it doesn't exist.

    Posted December 2, 2014 12:58pm by Milos Rujevic
    .a{fill-rule:evenodd;}techdegree
    Milos Rujevic
    Full Stack JavaScript Techdegree Student 39,661 Points
    • Ruby
    • Advanced Social Features in Ruby on Rails
    • Activity Feeds
    • Controllers, Parameters and Methods

    3 Answers

  • larsberg
    larsberg
    58,676 Points

    Final Treebook App Deploys to Heroku and works but when trying to post a status the app crashes.

    Posted July 7, 2014 2:47am by larsberg
    larsberg
    58,676 Points
    • Ruby
    • Advanced Social Features in Ruby on Rails
    • Push Updates
    • JavaScript Sorting

    0 Answers

  • fabrice jeullain
    fabrice jeullain
    2,502 Points

    NoMethodError in PicturesController#new

    Posted July 2, 2014 6:29pm by fabrice jeullain
    fabrice jeullain
    2,502 Points
    • Ruby
    • Advanced Social Features in Ruby on Rails
    • Create an Image Gallery
    • Listing Pictures

    1 Answer

  • larsberg
    larsberg
    58,676 Points

    NoMethodError in Pictures#edit

    Posted July 2, 2014 3:18am by larsberg
    larsberg
    58,676 Points
    • Ruby
    • Advanced Social Features in Ruby on Rails
    • Create an Image Gallery
    • Breadcrumbs

    0 Answers

  • larsberg
    larsberg
    58,676 Points

    Get convert to work for Imagemagick

    Posted June 28, 2014 12:51am by larsberg
    larsberg
    58,676 Points
    • Ruby
    • Advanced Social Features in Ruby on Rails
    • Uploading Files
    • Installing Paperclip

    2 Answers

  • Todd Nestor
    Todd Nestor
    10,689 Points

    Rails 4 import gravatars doesn't work

    Posted June 3, 2014 2:51am by Todd Nestor
    Todd Nestor
    10,689 Points
    • Ruby
    • Advanced Social Features in Ruby on Rails
    • Uploading and Resizing Images
    • Creating Rake Tasks

    0 Answers

  • Michael Mykytyn
    Michael Mykytyn
    23,440 Points

    Stage 3 Created an Image Gallery stage 3 of 3

    Posted April 21, 2014 1:48pm by Michael Mykytyn
    Michael Mykytyn
    23,440 Points
    • Ruby
    • Advanced Social Features in Ruby on Rails
    • Create an Image Gallery
    • URL Options

    3 Answers

  • Andrew House
    Andrew House
    10,107 Points

    Quiz Error (Rake Tasks)

    Posted April 1, 2014 8:29pm by Andrew House
    Andrew House
    10,107 Points
    • Ruby
    • Advanced Social Features in Ruby on Rails
    • Uploading and Resizing Images
    • Rake Tasks

    2 Answers

  • Roy Fiegenschue
    Roy Fiegenschue
    2,153 Points

    Can't mass-assign protected attributes: attachement

    Posted March 31, 2014 12:06am by Roy Fiegenschue
    Roy Fiegenschue
    2,153 Points
    • Ruby
    • Advanced Social Features in Ruby on Rails
    • Uploading Files
    • Attaching Files: Part 2

    2 Answers

  • Naomi Freeman
    STAFF
    Naomi Freeman
    Treehouse Guest Teacher

    Status id gets lost when I create the handlebar link/helper

    Posted March 20, 2014 3:36pm by Naomi Freeman
    Naomi Freeman
    Treehouse Guest Teacher
    • Ruby
    • Advanced Social Features in Ruby on Rails
    • Push Updates
    • Handlebars Helpers

    3 Answers

  • patte bläsing
    patte bläsing
    331 Points

    Rails 4 and Treebook - Unpermitted parameter: attachment

    Posted March 12, 2014 10:37am by patte bläsing
    patte bläsing
    331 Points
    • Ruby
    • Advanced Social Features in Ruby on Rails
    • Uploading Files
    • Attaching Files: Part 1

    5 Answers

  • Jared Fishman
    PLUS
    Jared Fishman
    Courses Plus Student 96 Points

    Implementing Paperclip with Rails 4 and Backbone/Handlebars

    Posted March 9, 2014 8:00pm by Jared Fishman
    Jared Fishman
    Courses Plus Student 96 Points
    • Ruby
    • Advanced Social Features in Ruby on Rails
    • Uploading Files
    • Attaching Files: Part 2

    1 Answer

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

    Treehouse

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

See Full Catalogue

Techdegree

  • Front End Web Development
  • Full Stack JavaScript
  • Python Development
  • Data Analysis
  • UX Design

Tracks

  • Learn to Code for Beginners
  • Beginning Python
  • Beginning SQL
  • Beginning Java
  • ...see more

Courses

  • JavaScript Basics
  • Intro to HTML & CSS
  • Python Basics
  • CSS Layout
  • ...see more

Explore

  • Plans
  • Affiliates
  • Perks
  • Free Treehouse Near Me
  • Treehouse for Libraries
  • Treehouse for Businesses
  • Twitter
  • YouTube
  • Facebook
  • LinkedIn
  • Instagram
Terms & Conditions | Privacy

© 2026 Treehouse Island, Inc.