error.txt

SQLite3::SQLException: near "to": syntax error: SELECT 1 AS one FROM "registerhours" WHERE (registerhours.to >= '2013-10-15 16:00:00.000000' AND registerhours.from <= '2013-10-15 17:00:00.000000') ORDER BY created_at DESC LIMIT 1

registerhour.rb

class Registerhour < ActiveRecord::Base
  belongs_to :project
	belongs_to :admin

	validates_presence_of :project, :timetype
	#validate :from_time_cannot_be_after_to_time
	validates :from, :to, :overlap => true
end

registerhours_controller.rb

def create
  @registerhour = Registerhour.new(registerhour_params)
  #@registerhour.date_today = Date.today
  respond_to do |format|
    if @registerhour.save
      format.html { redirect_to my_hours_url, notice: 'Timer registrert.' }
      format.json { render action: 'show', status: :created, location: @registerhour }
    else
      format.html { render action: 'new' }
      format.json { render json: @registerhour.errors, status: :unprocessable_entity }
    end
  end
end