You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: inline_image.rb
    path of file: ./repos/moebooru/app/models
    
    the code of the file until where you have to start completion: # InlineImages can be uploaded, copied directly from posts, or crop
    
  def generate_sample
    return true if File.exist?(sample_path)

    # We can generate the sample image during upload or offline.  Use tempfile_image_path
    # if it exists, otherwise use file_path.
    path = tempfile_image_path
    path = file_path unless File.exist?(path)
    unless File.exist?(path)
      errors.add(:file, "not found")
      return false
    end