ruby on rails classes online

this command: \curl -L https://get.rvm.io | bash -s stable After it is done installing, load RVM. You may first need to exit out of your shell session and start up a new one. source ~/.rvm/scripts/rvm In order to work, RVM has some of its own dependences es that need to be installed. To automatically install them: rvm requirements You may need to enter your root password to allow the installation of these dependencies. On occasion the zlib package may be reported as missing. The RVM page descri

installing, load rvm. You may first need to exit out of your shell session and start up a new one. source ~/.rvm/scripts/rvm In order to work, rvm has some of its own dependences es that need to be installed. to automatically install them: rvm requirements You may need to enter your root password to allow the installation of these dependencies. On occasion the zlib package may be reported as missing. The rvm page describes the issue and the solution in greater detail here.Step two-install

automatically creates the file structure and initializes the template according to the MVC model. The file structure after creation is as follows:Note: If you do not create a successful, please do not worry, it may be some dependent file virtual machine is not the default, then you need to follow the failure of the prompt information, install the corresponding dependent package. Rebuild after installation is complete.(2) Modify the Gemfile file and rebuild, open the Gemfile, remove the # Gem '

Introduction: Ruby on Rails is just one aspect of making Ruby very powerful, just as EJB is part of the Java Enterprise platform. Andrew Glover reveals what Java developers can do with Ruby. Before I begin this article, I need to clarify a few things. First, it's not an article about

search and replace it. Restart apache after completion. After completion, it should be similar to the screen that appears: Then you can start running the instance. 3. Run the Rails Applications \ Manage Rails applications on the left-side icon. The following interface is displayed: Here we select typo-2.6.0 and click start with Mongrel. When the prompt "Use CTRL + C to Stop" is displayed in the pop-u

"the object that wraps data rows in database tables or views, encapsulates database access, and adds domain logic to data ". In rails, each domain object will be extended to provide crud operationsActiveRecord::Base.Like hibernate, active record does not need to map files. In fact, developers using active record do not need to encode the attributes of getter, setter, and even classes. Through some beautifu

1. Auxiliary methods2. StringEnter "IRB" into the ruby command-line development environment, and the controller starts by executing "rails console" on the command line.(1) String connection>>"foo"+"bar"="foobar" (2) Interpolation by special syntax #{}>>first_name="Amy" ="Amy">>" #{first_name} Sun"+"Amy Sun "(3) The di

Several solutions to improve Ruby on Rails performance: rubyrails Introduction The Ruby On Rails framework has received wide attention since it was proposed. Under the guidance of ideas such as "do not repeat yourself" and "convention is better than configuration, rails brin

Brief introduction The Ruby on Rails framework has been widely watched since its inception and, guided by ideas like "Don't repeat Yourself" and "contract is superior to configuration", rails gives Web developers a very high level of development efficiency. ActiveRecord's flexibility allows you to use a very easy-to-use Hibernate without cumbersome configuration

record does not need to map files. In fact, developers using active record do not need to encode the attributes of getter, setter, and even classes. Through some beautiful vocabulary analysis, the active record can determine,OrderClass will be mapped to the databaseOrdersTable. Using a combination of Ruby reflection and metaprogramming, the columns of a table can be changed to object attributes. The access

, and immediately generate a user interface for the model. Conventions are better than configurations: to maintain good flexibility, the Java framework maintains a large number of common configuration files. Rails does not use this strategy. It uses a common project directory structure and simple generic naming conventions for methods, classes, tables, and columns to infer which are configured in the Java

about REST, SOAP, Rails Active Resource, and how to improve interoperability between multiple applications. Ruby on Rails Ruby on Rails (also known as rails or RoR) is an open source Web application framework written in

implementation of the TAR Archive utility, which can process. tar.gz files when combined with the Java.util.zip package. It also leverages the platform independence of the Java language and can be done without modification in all UNIX? Variants and running on Windows. As an exercise, you will use it to extract the contents of a sample tar file. In a similar way, you can use any legacy Java code in a Ruby on Rails