<form action="/login" method="POST">
  <input type="text" name="name">
  <input type="password" name="password">
  <button type="submit">
</form>

  def password
    @password ||= BCrypt::Password.new(hashed_password)
  end

  def password=(new_password)
    @password = BCrypt::Password.create(new_password)
    self.hashed_password = @password
  end

  def authenticate(given_password)
    password == given_password
  end

post '/login' do
  p params[:name]
  @user = User.find_by(name: params[:name])
  p @user
  if @user && @user.authenticate(params[:password])
    session[:id] = @user.id
    redirect '/show_all_users'
  else
    @errors = "Login failed"
    erb :login
  end
end