小编itx*_*itx的帖子

我现在有一个问题,我的数据库中的facebook图形API突然显示所有url图像返回默认图像看起来像这样:

示例网址:

http://graph.facebook.com/{user-id}/picture?type=large

我有一个文件,它是在4个领域name,online,like和score.我想通过多个字段和条件来订购带有分页的百万份文件.

示例一些文档:

我的用户文件:

{ "_id": 1, "name": "A", "online": 1, "like": 10, "score": 1 },
{ "_id": 2, "name": "B", "online": 0, "like": 9, "score": 0 },
{ "_id": 3, "name": "C", "online": 0, "like": 8, "score": 1 },
{ "_id": 4, "name": "D", "online": 1, "like": 8, "score": 0 },
{ "_id": 5, "name": "E", "online": 1, "like": 7, "score": 1 },
{ "_id": 6, "name": "F", "online": 0, "like": 10, …

我已经从这个答案实现了多个模型的设计注册.这个user_type从路径中获得了参数.我想用select更改它user_type.因此,当我选择一个值时,将获得一个param user_type select_tag.

我有一些代码看起来像:

的routes.rb

   namespace :cp do
    devise_scope :user do
     match '/add_user' => 'registrations#new'
     match '/select/admin' => 'registrations#selectuser', :user => { :usertype => 'admin' }
     match '/select/player' => 'registrations#selectuser', :user => { :usertype => 'player' }
    end
   end

registrations_controller.rb

  def selectuser

    respond_to do |format|
      format.js
    end
  end

new.html.erb

<h2>Add User</h2>

<%= form_for(resource, :as => resource_name, :url => registration_path(resource_name)) do |f| %>
  <%= devise_error_messages! %>

  <div><%= f.label :username, "Username" %><br />
  <%= f.text_field …

我已经制作了一个文件管理器，用于在tinyMCE上上传图像，并从另一个文件（attachment_path）获取表单上传和图像列表。首先，我成功获取了图像网址，并field_name在选择图像时将其放置在该位置。但是现在我想在选择图像时将禁用按钮（Insert）更改为false，然后将图像的URL放入按钮（使用自定义属性）。

脚本index_path：

file_browser_callback: function(field_name, url, type, win) {
        tinymce.activeEditor.windowManager.open({
          title: 'My File Manager',
          file: "<%= attachments_path %>",
          width: 450,
          height: 305,
          resizable : "no",
          inline : "yes",
          close_previous : "no",
          buttons: [{
              text: 'Insert',
              classes: 'widget btn primary first abs-layout-item',
              disabled: true,
              onclick: 'close',
              id: 'insertButton'
          }, {
              text: 'Close',
              onclick: 'close',
              window : win,
              input : field_name
          }]
        }, {
            oninsert: function(url) {
                win.document.getElementById(field_name).value = url; 
            },
            onselect: function() {
                // 
            }
        }); …

我有这样的tb1表:

name   email               link
john   myemail@gmail.com   google
john   myemail@gmail.com   facebook
john   myemail2@gmail.com  twitter
....
....
and more

当我用查询调用数据时

SELECT name, email, group_concat(DISTINCT link SEPARATOR '/') as source
FROM tb1
group by email

结果像这样:

NAME    EMAIL               SOURCE
john    myemail2@gmail.com  twitter
john    myemail@gmail.com   facebook/google
....
....
and more

sqlfiddle

我想让结果看起来像:

NAME    EMAIL               SOURCE 1       SOURCE 2
john    myemail2@gmail.com  twitter
john    myemail@gmail.com   facebook       google

只有查询才能生成结果吗？

注意:我想制作动态列源1,2,3 ......,n

我有3个模型及其关联

class User < ActiveRecord::Base
  # devise modules here
  attr_accessible :email, :password, :password_confirmation, :remember_me, :rolable_id, :rolable_type
  belongs_to :rolable, :polymorphic => true
end

class Player < ActiveRecord::Base
  attr_accessible :age, :name, :position
  has_one :user, :as => :rolable
end

class Manager < ActiveRecord::Base
  attr_accessible :age, :name
  has_one :user, :as => :rolable
end

我从开箱即用的方式放到accepts_nested_attributes_for :rolable用户模型上，在这个带有多态问题属具属问题的accepts_nested_attributes_for中，我找到了一些解决方案，但是所有解决方案都不适合我。所有解决方案，在尝试创建用户时始终出现相同的错误

    Processing by RegistrationsController#create as HTML
    Parameters: {"utf8"=>"V", "authenticity_token"=>"WKCniJza+PS5umMWCqvxFCZaRVQMPZBT4nU2fl994cU=", "user"=>{"email"=>"john@email.com", "password"=>"[FILTERED]", "password_confirmation"=>"[FILTERED]", "rolable_type"=>"manager", "rolable"=>{"name"=>"john", "age"=>"24"}}, "commit"=>"Sign up"}
    Completed 500 Internal Server Error in 143.0ms …

我用Ruby进行了加密和解密，并尝试用Go重写。我一步一步尝试，所以从 ruby​​ 中的加密开始，并尝试在 go 中解密，它是有效的。但是当我尝试在 Go 中编写加密并在 ruby​​ 中解密时。当尝试提取标签时我陷入困境，我解释了为什么我需要提取身份验证标签

ruby 中的加密

plaintext = "Foo bar"
cipher = OpenSSL::Cipher.new('aes-256-gcm')
cipher.encrypt
cipher.iv = iv # string 12 len
cipher.key = key # string 32 len
cipher.auth_data = # string 12 len
cipherText = cipher.update(JSON.generate({value: plaintext})) + cipher.final
authTag = cipher.auth_tag
hexString = (iv + cipherText + authTag).unpack('H*').first

我尝试连接初始向量、密文和身份验证标签，因此在解密之前我可以提取它们，特别是身份验证标签，因为我需要在 Ruby 中调用 Cipher#final 之前设置它

授权标签

该标签必须在调用 Cipher#decrypt、Cipher#key= 和 Cipher#iv= 之后、调用 Cipher#final 之前设置。执行所有解密后，在调用 Cipher#final 时自动验证标签

这是golang中的函数加密

ciphertext := aesgcm.Seal(nil, []byte(iv), []byte(plaintext), []byte(authData))
src …

我有控制器看起来像

class BarsController < ApplicationController
   after_action :some_method, only: [:index]

   def index
      get_cache = $redis.get('some_key')
      if get_cache.present?
          # i want to skip after_action callback in here
      else
          # other stuff
      end
   end
end

after_action :some_method如果get_cache存在,我该如何跳过？我知道我可以像这样有条件地做到这一点

class BarsController < ApplicationController
   after_action :some_method, only: [:index], unless: :check_redis

   def index
      get_cache = $redis.get('some_key')
      if get_cache.present?
          # i want to skip after_action callback in here
      else
          # other stuff
      end
   end


   private

   def check_redis
     $redis.get('some_key')
   end
end

但我认为这是多余的,因为应该多次获得redis.

我在模块上有类方法，并放置一个 CONSTANT 并在每个类级方法上调用它

module Cryption
 module Crypt
  class << self
    OFF_ENCRYPT = ENV['IS_OFF']
    
    def encrypt
       OFF_ENCRYPT
    end

    def decrypt
       OFF_ENCRYPT
    end
  end
 end
end

该模块创建为 gem

这迫使我在需要类之前设置环境变量

ENV["IS_OFF"] = "YES"
require "bundler/setup"
require "cryption"

Cryption::Crypt.encrypt
# result => "YES"

是否有正确的方法在 rspec 上设置环境变量，我认为在需要模块后无法设置变量

spec_helper.rb

require "bundler/setup"
require "cryption"

crypt_off_spec.rb

RSpec.describe "YES" do
  before(:context) do
    ENV['IS_OFF'] = "YES"
  end
  it "encryption off" do
     expect(Cryption::Crypt.encrypt).to eq("YES")
  end
end

crypt_on_spec.rb

RSpec.describe "NO" do
  before(:context) do
    ENV['IS_OFF'] = "NO"
  end
  it "encryption off" do
     expect(Cryption::Crypt.encrypt).to …

我已经找到了我的问题,但我找不到任何解决方案.

我的模型home:与属性,如title,logo,description,keywords.

我正在使用carrierwave +延迟作业上传a logo,上传工作(创建和更新)但是当文件/输入文件为空时我收到此错误:

ActionController::ParameterMissing in SettingsController#home_update_b
param is missing or the value is empty: home

Extracted source (around line #99): 

  def home_update_b_params
      params.require(:home).permit(:logo)
  end
end

SettingsController

def index
 ## get one record without params
 @home = Home.take 
end

def home_update_b
  @home = Home.find(params[:id])
   if @home.update(home_update_b_params)
     respond_to do |format|
      format.html { redirect_to setting_home_path, :notice => "Logo successfully updated" }
      format.json { head :no_content }
      end 
   else
     respond_to do …