<commit_before>module CategoryHelper
  def is_admin?
    user = User.find(params[:user_id])
    user.role.downcase == 'admin' || user.role.downcase == 'administrator'
  end
end<commit_msg>fixed helper method to account for empty role<commit_after>module CategoryHelper
  def is_admin?
    user = User.find(session[:user_id])
    if user.role != nil
      user.role.downcase == 'admin' || user.role.downcase == 'administrator'
    else
      redirect_to posts_path
    end
  end
end
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{'dir': 'git-commits-cleaned', 'id': '4600822', 'n_tokens_mistral': 152, 'n_tokens_neox': 151, 'n_words': 37}