Rails 4 ActiveModel::ForbiddenAttributesError

gistfile1.rb

class ResourcesController < ApplicationController
  def create
    @resource = Resource.new(params[:resource])

    respond_to do |format|
      if @resource.save
        format.html { redirect_to @resource.skill, notice: 'Resource was successfully created.' }
      else
        format.html { render @resource.skill }
      end
    end
  end

  private
  def resource_params
    params.require(:resource).permit(:vote, :name, :skill, :skill_id, :url)
  end
end


Started POST "/resources" for 127.0.0.1 at 2013-06-11 15:45:54 -0400
Processing by ResourcesController#create as HTML
  Parameters: {"utf8"=>"✓", "authenticity_token"=>"jsdtTmMi+8TPsA+4AkZn45ItIURaeCRVMiMMT4UL0WY=", "resource"=>{"name"=>"test", "url"=>"", "skill_id"=>"2"}, "commit"=>"Create"}
Completed 500 Internal Server Error in 1ms

ActiveModel::ForbiddenAttributesError (ActiveModel::ForbiddenAttributesError):
  app/controllers/resources_controller.rb:3:in `create'