ActiveModel::ForbiddenAttributesError in Rails 4. How to solve?

Question

Ruby on Rails

I have code in items_controller controller.

def edit
    @item = Item.find(params[:id])
  end

  def update
    @item = Item.find(params[:id])
    @item.update_attributes(params[:item])
    if @item.errors.empty?
      redirect_to item_path(@item)
    else
      render "edit"
    end
  end

When I try to edit localhost:3000/items/1/edit I get:

What should I do?

Answer 1

To the whitelist, all to the whitelist.
guides.rubyonrails.org/action_controller_overview....