rails 4 ActiveModel::ForbiddenAttributesError
ruby-on-rails, ruby-on-rails-4
Solution
I would suggest skipping to update so your code works
Your problem is probably not in your controller, but your model: Check to see your attributes are accessible with the follow tag
attr_accessible :title, :price, :description
Rails 4 does do it a little different from what I understand, this previous SO answer provided some good links: How is attr_accessible used in Rails 4?
You need to use attr_accessible/Strong Params whenever you're accessing things from the database.
Update
Oh to be young, and not realize Rails 4 uses Strong Params. I understand the OP has already solved his original problem, but I'm going to correct this so it could actually be used as the right answer.
This would be a controller level issue, as Rails 4 requires you to whitelist attributes in the controller.
Ad.create(params[:ad].require(:ad).permit(:title, :price, :description))
Most of the time you'll be permitting the same params in the create and update action, so it's best to move it into its own method within the controller.
Ad.create(ad_params)
def ad_params
params.require(:ad).permit(:title, :price, :description)
end
As OP pointed out in his comment, the permitted_params method he implemented was not being called from the permit.
Problem
I try to do a simple create using rails 4 my controller: ``` class AdsController < ApplicationController def new @ad = Ad.new end def create @ad = Ad.new(params[:ad]) @ad.save end def show @ad = Ad.find(params[:id]) end def index @ads = Ad.first(3) end private def ad_params params.require(:ad).permit(:title, :price, :description) end end ``` form: ``` <%= form_for @ad do |p| %> <p><%= p.text_field :title %></p> <p><%= p.text_field :price %></p> <p><%= p.text_area :description %></p> <p><%= p.submit %></p> <% end %> ``` from my point of view it's ok but I got this error `ActiveModel::ForbiddenAttributesError` what I'm doing wrong? UPDATE: my problem was passing wrong value to new method in create action: the solution was to pass `ad_params` to it