zernel

Routes

小心地使用 Match（Rails 3 已实现）

Rails 3 提供了 match 方法供我们自定义 routes，然而我们要小心使用它以避免“跨站脚本攻击”（XSS Attack）。比如像这样的 routes：

注：（r3 代表 Rails 3，r4 代表 Rails 4）

# routes.rb

zernel

# Path to your oh-my-zsh installation.
export ZSH=$HOME/.oh-my-zsh

# Set name of the theme to load.
# Look in ~/.oh-my-zsh/themes/
# Optionally, if you set this to "random", it'll load a random theme each
# time that oh-my-zsh is loaded.
ZSH_THEME="robbyrussell"

# Uncomment the following line to use case-sensitive completion.

zernel

class BootstrapFormBuilder < ActionView::Helpers::FormBuilder

  delegate :capture, :content_tag, :tag, to: :@template

  %w[text_field text_area password_field collection_select email_field].each do |method_name|
    define_method(method_name) do |name, *args|
      errors = object.errors[name].any?? " error" : ""
      error_msg = object.errors[name].any?? content_tag(:span, object.errors[name].join(","), class: "help-inline") : ""

      content_tag :div, class: "control-group#{errors}" do

zernel

*  Go to https://code.google.com/apis/console, log in with your Google account and click on API Access.
*  Create OAuth2 credentials by clicking the big blue OAuth2 button.
*  Set the callback url and the name of your app (can be edited later)
*  The Google Key (as it is referred to by OmniAuth) is the Client ID
*  The Google Secret (as it is referred to by OmniAuth) is the Client Secret
*  Use those credentials as per your documentation for implementing OAuth2 authentication.

The Google OmniAuth strategy for OAuth2 is here: https://github.com/zquestz/omniauth-google-oauth2.  Look in the examples folder for details on the rest of the implementation.

zernel

    <% flash.each do |name, msg| %>                                             
      <div class="alert alert-<%= name == :notice ? "success" : "error" %>">    
        <a class="close" data-dismiss="alert">×</a>                             
        <%= msg %>                                                              
      </div>                                                                    
    <% end %>

zernel

导出数据库pg_dump -Fc mydb > db_name.dump

导入数据库 pg_restore -d mydb db_name.dump

导出 pg_dump mydb > db_name.sql

表导出 pg_dump database -t table > table.sql

加上' -a '可只到导出表内容，不导出表结构

zernel

file = File.join(Rails.root, 'log/markdown.log')
File.new(file, 'w+') unless File.exist?(file)
logger = Logger.new(file)
logger.info("#{Time.now}: Share##{_id}'s price is from #{latest_price} to #{new_price}")
logger.close

zernel

<VirtualHost *:80>
        ServerName anderweb.ca
        RewriteEngine on
        RewriteRule ^(.*)$ http://www.anderweb.ca$1 [R=301,L]
</VirtualHost>

zernel

  1 服务器上：                                                                                                                                                                       
  2 git init --bare --shared reggin.git                                             
  3 本地：                                                                          
  4 git remote add origin xxx@git.xxx.xx:/home/dev/repos/xxxx.git

zernel

begin #开始
 
 raise.. #抛出异常
 
rescue [ExceptionType = StandardException] #捕获指定类型的异常 缺省值是StandardException
 $! #表示异常信息
 $@ #表示异常出现的代码位置
else #其余异常
 ..
ensure #不管有没有异常，进入该代码块