I'm trying to create an event through an event form and I keep getting a form error that says "User can't be blank". The event needs a user_id to post a feed_item showing who created the event. Why can't this event get created?

event.rb

class Event < ActiveRecord::Base
  attr_accessible :description, :location, :title, :category_id, :start_date,
  :start_time, :end_date, :end_time, :image

  belongs_to :user
  belongs_to :category

  has_many :rsvps
  has_many :users, through: :rsvps, dependent: :destroy

  mount_uploader :image, ImageUploader

  validates :title, presence: true, length: { maximum: 60 }
  validates :user_id, presence: true

create_events.rb (database)

class CreateEvents < ActiveRecord::Migration
  def change
    create_table :events do |t|
      t.string :title
      t.date :start_date
      t.time :start_time
      t.date :end_date
      t.time :end_time
      t.string :location
      t.string :description
      t.integer :category_id
      t.integer :user_id

      t.timestamps
    end
    add_index :events, [:user_id, :created_at]
  end
end

events_controller.rb

def new
    @event = Event.new
    @user = current_user
end

def create
    @event = current_user.events.build(params[:event])
    if @event.save
        flash[:success] = "Sesh created!"
        redirect_to root_url
    else
        @feed_items = []
        render 'static_pages/home'
    end
end

routes.rb

SampleApp::Application.routes.draw do

  resources :users do
    member do
      get :following, :followers, :events
    end
  end

  resources :events do
    member do
      get :members
    end
  end

  root to: 'static_pages#home'

events/new.html.erb

<%= form_for @event, :html => {:multipart => true} do |f| %>
  <%= render 'shared/error_messages', object: @event %>