Issue with inserting data into database via rails command

Question

I have an issue with inserting data via rails command. Bellow you can see my model and the issue. The title is displaying nil even tho I created a new instance of Post with the title hash. I am aware you can do this in a different way. I am using this simple example to figure out why can't I insert or display data from the database.

Model

category.rb

class Category < ApplicationRecord
  attr_accessor :name
  has_many :posts
end

post.rb

class Post < ApplicationRecord
  attr_accessor :title, :body, :category_id, :author_id
  belongs_to :category
end

Rails c

post = Post.new(:title => 'Test')
=> #<Post id: nil, title: nil, body: nil, category_id: nil, author_id: nil, created_at: nil, updated_at: nil>

See the difference of attr_accessor (ruby level) vs attr_accessible (rails level) : stackoverflow.com/questions/3136420/… — MrYoshiji
– MrYoshiji, Commented Aug 15, 2017 at 15:09
I get this error when i use attr_accessible Undefined method `attr_accessible' for #<Class:0x0000000cd719f8> Did you mean? attr_accessor — Mahir
– Mahir, Commented Aug 15, 2017 at 15:14
See first answer's comments as they explain why it is not working for Rails 4+ — MrYoshiji
– MrYoshiji, Commented Aug 15, 2017 at 15:16

Josh Alexy · Accepted Answer · 2017-08-15 15:13:20Z

1

You should not be using the attr_accessor in your Rails class. Rails automatically make these attributes readable, and you should generally only be writing by saving records to the database.

answered Aug 15, 2017 at 15:13

Josh Alexy

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