Rails 用户模型中的语法错误？答案

【问题标题】：Syntax error in Rails User Model?Rails 用户模型中的语法错误？
【发布时间】：2016-09-03 07:43:14
【问题描述】：

我在尝试创建新用户时在 Rails 控制台中收到此错误：

models/user.rb:32: syntax error, unexpected tSTRING_DEND, expecting ')'

..."#{Time.now.utc}--#{password}"})if self.new_record?

这是我的模型：

class User < ActiveRecord::Base
attr_accessor :password
attr_accessible :name, :email, :password, :password_confirmation

email_regex = /\A[\w+\-.]+@[a-z\d\-]+(\.[a-z\d\-]+)*\.[a-z]+\z/i

validates :name,       :presence => true

validates :email,      :presence => true,
          :format                => { :with => email_regex },
          :uniqueness            => { :case_senstive => false }

validates :password,   :presence => true, 
          :confirmation          => true,
          :length                => { :within => 6..40 }

before_save :encrypt_password

def has_password?(submitted_password)
    encrypted_password == encrypt(submitted_password)
end

def self.authenticate(email, submitted_password)
    user = find_by_email(email)

    return nil if user.nil?
    return user if user.has_password?(submitted_password)
end
private
  def encrypt_password
    #generate salt for new user
    self.salt = Digest::SHA2.hexdigest("#{Time.now.utc}--#{password}"}) if self.new_record?

    #encrypt password; store in encrypted_password
    self.encrypted_password = encrypt_password
end

#encrypt with salt
def encrypt(pass)
    Digest::SHA2.hexdigest("#{self.salt}--#{pass}")
end

结束

我不确定错误，但控制台确实指向 --#{password}"} 之后的括号） ^

【问题讨论】：

标签： ruby-on-rails ruby syntax model

【解决方案1】：

你在字符串的末尾多了一个} 符号

【讨论】：

【解决方案2】：

self.salt = Digest::SHA2.hexdigest("#{Time.now.utc}--#{password}"}) if self.new_record?

用这个替换上面的行

self.salt = Digest::SHA2.hexdigest("#{Time.now.utc}--#{password}") if self.new_record?

【讨论】：

【解决方案3】：

改变你的方法

def encrypt_password
    #generate salt for new user
    self.salt = Digest::SHA2.hexdigest("#{Time.now.utc}--#{password}") if self.new_record?

    #encrypt password; store in encrypted_password
    self.encrypted_password = encrypt_password
end

出现语法错误

self.salt = Digest::SHA2.hexdigest("#{Time.now.utc}--#{password}"}) if self.new_record?

应该是

self.salt = Digest::SHA2.hexdigest("#{Time.now.utc}--#{password}") if self.new_record?

你给了一个额外的'}'

【讨论】：