How to use rails undefined method `attr_accessible' in version 4 +?

Question

I am new on rails. Below is what i am trying

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

but i am not sure how to use attr_accessible in rails 4+ in my above scnerio . I was doing as per old .Please suggest

Answer 1

In Rails 4 + , there is no mass assignment support.

You have to pass in controller and use that like,

def create
  Category.create(category_params)
end

private

def category_params
  params.require(:category).permit(:name)
end

then call the category_params method in your controller actions.

Answer 2

For rails 4 and above you do not need to use this just permit your attributes in controller

 def category_params
   params.require(:category).permit(:name)
 end

Answer 3

In rails 4 attr_accessible is deprecated you should use strong params

Rails 4, Strong Parameters, and Deprecation of the attr_accessible Macro