堆栈级别也是Ruby on rails

Question

我对红宝石很新，所以不太确定会出错。我得到一个错误，说“堆栈级别太深”我正在尝试注册一个新用户

这是我的代码：

  class UsersController < ApplicationController
  def new
  @user = User.new
  end

def create
  @user = User.new(params)
  if @user.save
    redirect_to root_url, :notice => "Signed up!"
  else
    render "new"
  end
end

private

  def params
    params.require(:user).permit(:firstName, :secondName, :activated, :email, :password)
  end

end

users.rb的

class User < ActiveRecord::Base

  attr_accessor :password
  before_save :encrypt_password

  validates_confirmation_of :password
  validates_presence_of :password, :on => :create
  validates_presence_of :email
  validates_presence_of :activated
  validates_presence_of :firstName
  validates_presence_of :secondName
  validates_uniqueness_of :email

  def self.authenticate(email, password)
    user = find_by_email(email)
    if user && user.password_hash == BCrypt::Engine.hash_secret(password, user.password_salt)
      user
    else
      nil
    end
  end

  def encrypt_password
    if password.present?
      self.password_salt = BCrypt::Engine.generate_salt
      self.password_hash = BCrypt::Engine.hash_secret(password, password_salt)
    end
  end
end

完全错误是：

UsersController中的SystemStackError＃创建堆栈级别太深

Answer 1

你的params方法需要被命名为params以外的东西，例如safe_params。否则当你在下一行去params.require时，你会自称。

params.require正在访问一个名为params的方法，该方法来自Rails。你只是params'd的def方法覆盖了Rails params方法。

清晰度编辑：它应该是这样的：

def create
  @user = User.new(safe_params)
  ...
end

def safe_params
  params.require(:user).permit(:firstName, :secondName, :activated, :email, :password)
end