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presentation layer is rendered by the browser The logical layer manipulates the data from the server side and goes to the presentation layer The data layer is responsible for storing the data. 6-tier architectureIf you divide it further, you get a 6-tier architecture, such as The presentation layer is divided into the client layer and the presentation logic layer The client layer is responsible for rendering the display page Indicates that the logical layer generat
The presentation layer is rendered by the browser The logical layer manipulates the data from the server side and goes to the presentation layer The data layer is responsible for storing the data. 6-tier architectureAssuming a further cut, you get a 6-tier architecture, such as The presentation layer is divided into the client layer and the presentation logic layer The client layer is responsible for rendering the display page Indicates that the logical layer g
In Ruby on Rails(http://www.maiziedu.com/course/ruby-px/) , many rails Programmers often forget to consider performance issues, which can lead to slow website speeds, a spike in memory usage,and frequent reboots ofApache , so you'll need to optimize rails performance. The s
According to "Ruby on Rails" and I learned the route map, we know that can be accessed GET /posts/ :id (. :format ) to display specific objects.1. Modify the actionModify the APP/CONTROLLERS/POSTS_CONTROLLER.RB show this action. Here's a puzzle, what if I get the parameters inside the URL?can be accessed via the params built-in variable! As follows: def show @post = Post.find (Params[:id]) end2. Modify
inheriting the virtual class, and then connect different databases. This is achieved by distributing the models to a different database. In this project, there are two abstract Class model corresponding to the application database, and the log library respectively. These two abstract Class model are: Ruby Code -Speciesschemamodel -Loggingmodel and their corresponding databases can be found in the definition of DATABASE.YML, respectively Java co
Configure Ruby on Rails in CentOS and deploy RedmineGitMake sure that the dependent packages are installed:[Plain] view plaincopy Yuminstallcurl Yuminstallcurl-devel Yuminstallzlib-devel Yuminstallopenssl-devel Yuminstallperl Yuminstallcpio Yuminstallexpat-devel Yuminstallgettext-devel Download the git package and compile and install it: [Plain] view plaincopy Wgethttp: // www.codemonkey.org. u
Recently, many people have emailed me all the vim packages. Download is provided below. You just need to download them. You don't have to send me any more emails. Of course, you are welcome to leave a message on my blog. Now vim-Ruby is installed. Of course, you need to install it yourself. A simple command is provided below Ubuntu:Sudo apt-Get install vim-RubyHowever, it seems that if your vim version is 7.0, Ru
The three components of devise, cancan, and rolify combine to create a complete and powerful user rights model. Devise introduction, responsible for user registration, login, exit, retrieve password and other operations. Detail reference devise on GitHub Cancan, which is responsible for role creation, authorization of roles, displaying elements in the page based on authorization, and throwing exceptions when the model is out of authorization. Detail reference rolify on GitHub Ro
This is to setup a developement environment for Ruby 1.87 and rails 2.2.3 on Ubuntu 10.04 (LUCID ).[Sourcecode Language = "bash"]# Make sure Ubuntu is up to date$ Sudo apt-Get update$ Sudo apt-Get dist-Upgrade# Install Ruby$ Sudo apt-Get install ruby1.8-dev ruby1.8 ri1.8 rdoc1.8 irb1.8 libreadline-ruby1.8 libruby1.8 libopenssl-
Label: Queried the experience of the great God Http://stackoverflow.com/questions/19078044/disable-activerecord-for-rails-4 Http://stackoverflow.com/questions/821251/how-to-configure-ruby-on-rails-with-no-database The one I liked the most was the way I used it. If you is creating a new application, you can use-O to skip activerecord:rails new My_app-O for existin
Recently wanted to get an Android app that has access to the Internet, because it's fast so it uses Ruby on Rails to provide HTTP resources. This information is still relatively small, so the attempt to record the process.1 building Web application with Ruby on Rails1.1 New Web ApplicationCD Test1.2 Generate productRails Generate Scaffold Product reference:string
Ruby on Rails is a Web application that enables you to develop, deploy, and maintain ProgramA simple framework. Of course, all web frameworks share the same goal. What makes rails so different? We can answer this question in several ways. First, look at the architecture. In the past, many developers used the MVC Architecture in rigorous web applications. The
Tutorial Requirements The following techniques and resources are required to learn this tutorial: Database server NetBeans IDE 6.0 with Ruby support To create a sample database This tutorial builds the relationship between the Rails model based on another tutorial. If you have completed that tutorial, you can start with the project that was generated when you completed the tutorial and go directly to t
Development Environment: OS: Windows XP RUBY: ruby1.9.1 Rails: rails2.3.5 IDE: rubymine2.0.1 Flash builder: Flash builder4 Background: In ruby-Flex practice-using swfobject to load SWF in a ruby project describes how to reference SWF on the rails interface. This example des
Ruby on rails gem install pg cannot be installed, rubyrails gem install pg -v '0.18.2'Building native extensions. This could take a while...ERROR: Error installing pg: ERROR: Failed to build gem native extension. current directory: /Users/bevan/.rvm/gems/ruby-2.3.0/gems/pg-0.18.2/ext/Users/bevan/.rvm/rubies/ruby
recommended that you use a homemade program: Brew Install ImageMagick Now we need a Ruby adapter that connects to the local ImageMagick library. You can use Minimagick, because it is lightweight: # gemfile Gem ' Mini_magick ' Characteristics of Minimagick Before we begin, let's take a look at some of the minimagick features to avoid unnecessary errors. Open the Rails conso
For Mac occasions:Which Ruby-"/usr/bin/ruby-" This is the Ruby that comes with Mac, and we want to be able to manage the Ruby version.Installing RVMCurl-l https://~/.profileCheck install ruby conditionRVM RequirementsStatus 1 is wrong." $ (curl-fssl https://raw.githubusercon
Rails has a built-in Log function, or, more accurately, Rails exposes the Logger object, which can be used in all Rails programs. Logger is a simple Log framework transplanted from ruby (you can type ri Logger in the ruby command line to view the documentation of the stand
Ruby on Rails directory structure + app/#控制器, model, view, help method, mail, static resource + bin/#rails脚本 + config/#路由, database + db/ #数据库模式, migration file + lib/ # Expansion Module + log/ #日志 + public/#公共资源 + test/ #单元测试 -config.ru #Rack服务器的程序设置, for starting programs - Gemfile,gemfile.lock #指定Gem依赖, for bundler gem -Rakefile #保存并加载可在命令行中执行的任务, ad
Writing a database management system with Ruby on Rails is very fast. Ruby on Rails has such a high productivity, not only is Ruby's syntax flexible, but it's all a big program thanks to activity records (active record). So what is an activity record? If you explain it in one sentence, it's a framework that maps data t
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