湘江鸿的技术专栏

1.首先安装一些基础库apt-get install curl git-core build-essential zlib1g-dev libssl-dev libreadline5-dev2.接着安装ruby虚拟机bash  https://rvm.beginrescueend

在Gemfile中添加 group :development do gem 'rspec-rails', '2.6.1' end group :test do gem 'rspec-rails', '2.6.1' end bundle install

rails 3.1 采用特殊机制引用CSS和JS 仅仅将CSS或JS放到public 或者 assets上，浏览器是无法获取到的 解决方法如下： 在Gemfile中添加 gem 'sprockets', '= 2.0.0.beta.10' 此方法适用于rails 3

rails console test > require './spec/support/blueprints'  this will load blueprints, checkout the file which predefine objects for your te

$ git config --global user.name "Your Name" $ git config --global user.email youremail@example.com$ git config --global alias.co checkoutgit

Retrieving Multiple Objects in Batches find_each User.find_each(:batch_size => 5000) do |user| NewsLetter.weekly_deliver(user) end

default_url_optionsclass ApplicationController < ActionController::Base # The options parameter is the hash passed in to 'url_for' def d

Using render  You can render the default view for a Rails template, or a specific template, or a file, or inline code, or nothing at al

The has_many :through Association class Physician < ActiveRecord::Base has_many :appointments has_many :patients, :through => :appoin

Active Record uses the new_record? instance method to determine whether an object is already in the database or not. The following meth

class AddReceiveNewsletterToUsers < ActiveRecord::Migration def self.up change_table :users do |t| t.boolean :receive_newslet

$ heroku create $ git push heroku master $ heroku rake db:migrate If you want to push the data up, too, you can do so using the taps g

You can implement it like this in your ApplicationController: before_filter :set_locale def set_locale I18n.locale = extract_locale_

1. 先下载我的rails项目 设置机子上的git，说明在此：http://help.github.com/linux-set-up-git/ 然后在想要保存项目的目录下执行下列命令：git clone git@github.com:gitfly/Quan.git     被

If you want to route /posts (without the prefix /admin) to Admin::PostsController, you could use scope :module => "admin" do resources :posts, :comments endor resources :posts, :module =>