小编Mar*_*ang的帖子

我正在尝试将头像上传字段添加到我的个人资料页面,但是一旦我添加:html => {:multipart => true}到它,它就会吐出语法错误.

<%= form_for(@user), :html => { :multipart => true } do |f| %>
<%= render 'shared/error_messages', object: f.object %>

<%= f.label :name %>
<%= f.text_field :name %>

<%= f.label :email %>
<%= f.email_field :email %>

<%= f.label :password %>
<%= f.password_field :password %>

<%= f.label :password_confirmation, "Confirmation" %>
<%= f.password_field :password_confirmation %>


<%= f.label :avatar %>
    <%= f.file_field :avatar %>

    <%= f.submit "Save changes", class: "btn btn-large btn-primary" %>
<% end %>

错误是:

syntax …

我的应用程序在本地没有任何问题,但是只要我将它推送到Heroku,日志就会显示NoMethodError.仔细查看我的代码,我真的没有看到我错过了什么.特别是,为什么它会在本地工作,但在Heroku上它会抛出NoMethod？

错误

Started POST "/users" for <IP>
Processing by UsersController#create as HTML
Completed 500 Internal Server Error in 102ms

app/models/user.rb:38:in `create_remember_token'
app/controllers/users_controller.rb:28:in `create'

NoMethodError (undefined method `remember_token=' for #<User:0x000000052e8fb0>):

user.rb

class User < ActiveRecord::Base
attr_accessible :email, :name, :password, :password_confirmation, :image
has_secure_password
has_many :microposts, dependent: :destroy
mount_uploader :image, AvatarUploader

before_save { |user| user.email = email.downcase }
before_save :create_remember_token

validates :name, presence: true,
        length: { maximum: 50}
VALID_EMAIL_REGEX = /\A[\w+\-.]+@[a-z\d\-.]+\.[a-z]+\z/i
validates :email, presence: true,
        format: { with: VALID_EMAIL_REGEX },
        uniqueness: { case_sensitive: …