rails for dummies

change the later version. We will also continue to wait for a long download. After the compilation process is completed, Ruby and Ruby gems will be installed. Step 3-set the ruby version After the rvm is installed, You need to execute the following command to set the ruby of the specified version to the default version of the system. $ Rvm 1.9.2-Default You can also use other versions, provided that you have installed the version with rvm install. At this time, you can test whether i

These two days I read a book "grails authoritative guide" and read the rails framework on java. There are two design concepts: 1. Make simple thing easy and make complex possible-make simple things easier and make the implementation of complex things possible 2. Convention over configuration -- the Convention is higher than the configuration Rails has almost become synonymous with agile web frameworks. Com

In fact, when Ruby was successfully installed and then--no-ri--no-rdoc rails in gem install, the following error was reported: Fetching:thread_safe-0.3.4.gem (100%) Successfully installed thread_safe-0.3.4 Fetching:minitest-5.5.1.gem (100%) successfully installed minitest-5.5.1 Fetching:tzinfo-1.2.2.gem (100%) successfully installed tzinfo-1.2.2 fetching: I18n-0.7.0.gem (100%) successfully installed i18n-0.7.0 Fetching:activesupport-4.2.0.gem

1) Install Ruby Download installation package:http://rubyforge.org/frs/?group_id=167, I downloaded the Rubyinstaller-1.8.7-p302.exe After loading, you can use RUBY-V test whether the installation is successful, such as figure, if a version of the installation is successful 2) Installation RubyGems RubyGems is a Ruby Package Manager tool that makes the installation of Ruby packages simple, requires only one command to download the appropriate packages from a remote server, and i

One, problems and ideas Recently in the rails + react + MySQL basic framework to write a CMS + client project, which involves the image upload and display, the following simple ideas, as for the deployment of the project, should be in the end of the winter break to share. The main problem with uploading and displaying pictures in rails is: Where does the picture exist?Picture format size?How does the cli

Implementing the search for XForms by doctors and patients Brief introduction So far, we have created a DB2 database and three XForms to help patients and nurses manage patient data. By using Ruby on Rails as a processing interface, patients can add new records to the database and update the information later. So the nurse can view and modify the information appropriately and approve the input when the patient is able to diagnose and treat it. This

I went to bed 5:30 last night, frantically configuring the vim environment and finally finished the fantastic Ruby on Rails development tool. I have installed the Vim-ruby in this vim environment, of course this should you to install, in Ubuntu below a simple command: sudo apt-get install Vim-ruby But as if your vim is version 7.0, the default is Ruby support. Then I integrated the rubycomplete.vim,rails.vim,project.vim and a tool that mimics TextM

Ajax|rails v. Use of link_to_remoteRails has several helper methods to implement Ajax in the template for your view. One of the simplest and most common methods is link_to_remote (). Let's examine a simple Web page-it implements the query time and has a link that users can click to get the current time. The application uses Ajax via Link_to_remote () to retrieve time and display it on a Web page. My view template (index.rhtml) looks like this:

Release date:Updated on: Affected Systems:Ruby on Rails 3.xRuby on Rails 2.xRuby on Rails 1.xUnaffected system:Ruby on Rails 3.0.4Ruby on Rails 2.3.11Description:--------------------------------------------------------------------------------Bugtraq id: 46291Cve id: CVE-201

The goal of mastering Redmine plugin development was not realized in 2016 years, and continued in 2017. Choose the Ruby on Rails Tutorial tutorial, Windows installs Railsinstaller, which is Ruby V2.1.8, and Bitnami redmine-3.3.0 version is the same. But the rails version is 4.2.5.1, and the redmine corresponds to the 4.2.6 inconsistency. Make a Gem pack update first: Start the terminal. Note Use t

Address: http://www.linuxidc.com/Linux/2010-12/30380.htm Ubuntu is updated with Ruby and rails, but not the latest version. The ruby version is about 1.9.1, but rails version is only 2.3.5, Which is outdated, so you have to download the latest version.Source codeCompile and install. 1. Prepare the library used for installation $ Sudo apt-Get install GCC g ++ build-essential libssl-dev li

Today, the system is reinstalled and the running environment of rails is re-built. Therefore, the following commands are based on the latest situation. Install Ruby one-click Installer Note: Try not to install those new versions. Ruby and rails are not very friendly to Windows. Generally, the mswin32 versions of these class libraries are the latest. Trade rashly acts as a mouse, So you suffer. The version

Mongrel is a ruby HTTP library used to deliver Ruby web applications. In fact, do not use Apache mongrel alone can run the ROR program, the online tutorial using Apache is used to do web proxy, so that the website will not have a http://www.unbe.cn: 8081/such port declaration. I just did the test. Multiple port numbers won't affect me, so I only configured mongrel. The configuration steps are as follows:1. Download and install Ruby2. Install gem (Ruby installed in Windows installation package co

1. install and configure devise Add a line in gemfile: gem 'devise' After running the bundle install, install devise to the project: rails generate devise:install Create a verified user model, which is usually named "user" or "other names: rails generate devise userrake db:migrate View the user. RB File Created by devise in the models Folder: The devise method is from devise gem. database_authenticatable

Do you need to install and deploy Rails to a new Web Server frequently?Are you still experiencing the annoying installation process from installing Ruby Rubygems MySQL... to installing Web Server components?Now you can use this script to deploy Ruby1.8 + Rails + Passenger + Nginx on the Ubuntu Server:#! /Bin/shEcho "= YTRIPTHIRD Ubuntu INSTALL ="Cd/tmp # RubyEcho "= Install Ruby library ..."Sudo apt-get ins

Before you start Ruby on Rails has been one of the fastest-growing and most popular open source WEB application development frameworks in the last year. But because it focuses on building HTML applications, some people criticize Rails for not being flexible enough. Especially with the rise of rich Internet applications (RIA), which use technologies to replicate desktop application features, such as using F

Ruby on Rails is in the ascendant. As it has become popular, developers are increasingly desperate for an integrated development environment (IDE) to make Rails easier to use. Radrails is an Eclipse based environment that can meet the requirements of most developers. This article describes the Radrails IDE and assumes you already know how to develop a WEB application with Ruby on

Ajax|rails 　　 A brief history of Ajax In just a few months, Ajax has become the hottest thing from a very obscure and rare technique. This article will introduce the extremely Easy-to-use AJAX support-implemented as part of the Ruby on Rails Web application framework. This article is not a detailed tutorial, so I assume you've learned a little bit about how to organize and build a

original address: http://www.blogjava.net/pengpenglin/archive/2011/08/29/357506.html 1. Basics========================================================== =====Generators in rails 3:Http://railscasts.com/episodes/216-generators-in-rails-3Validations in rails 3:Http://railscasts.com/episodes/211-validations-in-rails-3How

Fence rails Burch, kolstad, and schrijvers Farmer John is trying to erect a fence und part of his field. he has decided on the shape of the fence and has even already installed the posts, but he's having a problem with the rails. the local lumber store has dropped off boards of varying lengths; Farmer John must create as much of the rails he needs from the su