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Ruby Build a Simple Ruby on Rails Application Customizing Forms Creating Relationships

Andrew Allsop
Andrew Allsop
3,751 Points
Posted by Andrew Allsop
Andrew Allsop
3,751 Points

Building a Simple Rails Application : Creating Relationships with Rails 4 Problem

I'm unable to figure out how to create a relationship between my user_id and first_name. I'm using Rails 4 and Bootstrap 3 which is throwing up a number of problems.

In order to use attr_accessible I've installed the gem gem 'protected_attributes', however I can't remember if I've not used attr_accessible due to the different method in Rails 4 - I found I could progress without using it but didn't use another method in it's place.

I get the following error when trying to post a status:

#NoMethodError in Statuses#show

Showing /Users/andrewallsop/Documents/Personal/Development/treebook/app/views/statuses/show.html.erb where line #5 raised:

undefined method `first_name' for nil:NilClass

Rails.root: >/Users/andrewallsop/Documents/Personal/Development/treebook

Application Trace | Framework Trace | Full Trace
app/views/statuses/show.html.erb:5:in `_app_views_statuses_show_html_erb___486202422411280236_70355151938680'

2 Answers

Kang-Kyu Lee
Kang-Kyu Lee
52,045 Points
Kang-Kyu Lee
Kang-Kyu Lee
52,045 Points

If I were you, for Rails in treehouse, I would first go with "Odot" project. I've just downloaded project file of treebook and open the Gemfile, and rails version of it was '3.2.6'. But Rails does not use attr_accessible any more, since 4.0 -- It uses strong parameters.

Or, you may choose to install rails 3.2.6 first and go on with "Treebook"

Andrew Allsop
Andrew Allsop
3,751 Points
Andrew Allsop
Andrew Allsop
3,751 Points

I think I'll install Rails 3.2 and download Bootstrap 2.0. I figure I can download the project files so I don't have to go over the whole thing again.

Kang-Kyu Lee
Kang-Kyu Lee
52,045 Points
Kang-Kyu Lee
Kang-Kyu Lee
52,045 Points

Hi Andrew. If you chose to go with Treebook project. Easiest way to start would be download and unzip project files and then go to the directory and do bundle install -- just in case, hope it helps

Andrew Allsop
Andrew Allsop
3,751 Points
Andrew Allsop
Andrew Allsop
3,751 Points

Hello Kang,

Great idea :)

Thanks,

Andrew

David Curtis
David Curtis
11,301 Points
David Curtis
David Curtis
11,301 Points

do they provide example code for this tutorial? if so, i would download it and check out how they do it.

Andrew Allsop
Andrew Allsop
3,751 Points
Andrew Allsop
Andrew Allsop
3,751 Points

They provide example code but it's for a different version of rails/bootstrap.

David Curtis
David Curtis
11,301 Points
David Curtis
David Curtis
11,301 Points

I had the same problem and had to start over using an older version of rails. Major bummer.

Andrew Allsop
Andrew Allsop
3,751 Points
Andrew Allsop
Andrew Allsop
3,751 Points

My thinking now is that it's my only option. Without a doubt there's going to be more problems thrown up further down the course.