ActiveModel::ForbiddenAttributesError in BlueprintsController#create

gistfile1.txt

Controller:

class BlueprintsController < ApplicationController

    protect_from_forgery with: :exception

    def index
        @blueprints = Blueprint
    end

    def show
        @blueprint = Blueprint.find params[:id]
    end

    def create
        @blueprint = Blueprint.create! params
    end

    def new
        
    end


    private

    def blueprint_params
        params.require(:blueprint).permit(:name, :body)
    end

end

----------------------------------

view:

.container
  .row
    .col-md-9
      %form{action: blueprints_path, :method => "POST"}
        %input{:type => "hidden", name: request_forgery_protection_token.to_s, value: form_authenticity_token}/ 
        .form-group
          %label{:for => "blueprint-title"} Template Name
          %input.form-control{type: "text", name: "blueprint[name]"}/
        .form-group
          %label{:for => "body"} Template Body
          %textarea.form-control{:name => "blueprint[body]", :rows => 30}
        %button.btn.btn-success{type: "submit"} Save
    .col-md-3 
      


---------------------------------

class Blueprint
    
    include Mongoid::Document

    validates_presence_of :name, :body

    field :name, type: String
    field :body, type: String

    # has_and_belongs_to_many :placeholders

end