Cannot instance object with attr_accessible in Rails

Question

I have created a Category class:

class Category < ActiveRecord::Base
    attr_accessible :name
    has_many :posts
end

When I created a new object:

category = Category.new(:name => "News")

I am getting this error:

`NoMethodError: undefined method 'attr_accessible' for Category(call 
'Category.connection' to establish a connection):Class  ...

How can I resolve this?

What rails version are you using? This method was removed from ActiveRecord, and replaced with strong params — Avdept, Apr 08 '15 at 19:27

score 1 · Answer 1 · edited Nov 05 '15 at 21:53

1

This will fix your issue.

class Category < ActiveRecord::Base

    def user_params
      params.require(:name)
    end
    has_many :posts
end

edited Nov 05 '15 at 21:53

Cleb

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answered Nov 05 '15 at 21:34

Ali Raza

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score 0 · Accepted Answer · edited May 23 '17 at 11:44

0

You want to use attr_accessor, not attr_accessible.

attr_accessor is a Ruby method that defines setter and getter methods, while attr_accessible lets you whitelist ActiveRecord attributes for mass assignment.

edited May 23 '17 at 11:44

Community

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answered Apr 03 '15 at 03:44

infused

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i'm learnning tutorial [learn ruby from scratch ](https://www.youtube.com/watch?v=gSf86udAntA&index=21&list=PLDmvslp_VR0xlwr5lAx2PDsZLu7oIOhpX) in Video , use attr_accessible – nắng huế yêu gái huế Apr 03 '15 at 03:46
Hmm, perhaps you are supposed to use attr_accessible. You may just need to install the https://github.com/rails/protected_attributes gem. – infused Apr 03 '15 at 03:51
@nắnghuếyêugáihuế, `attr_accessible` is no longer valid for rails 4, instead there's `strong_parameters` now, this video is probably using a rails 3 version, and you're probably using a rails 4+ version – Mohammad AbuShady Apr 03 '15 at 09:49

score 0 · Answer 3 · answered Dec 31 '15 at 13:14

0

Use attr_accessor there.. it will help you to solve the issue

answered Dec 31 '15 at 13:14

Samsad CV

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score 0 · Answer 4 · answered Jul 10 '18 at 13:50

0

Below should fix also. No need to put ::Base -- you can remove it.

class Category < ActiveRecord
  attr_accessor :name
  has_many :posts
end

answered Jul 10 '18 at 13:50

Aziz Zoaib

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Cannot instance object with attr_accessible in Rails

4 Answers4