udemy ruby on rails

My little brother was a beginner of Ruby, and I didn't use Linux.Search on the Internet a lot about the configuration of the development environment article, but always and actually a bit in and out, find n times the article, finally found the simplest environment installation configuration method, share the nextRecommended with Ubintu, feel for the habit of using Windows novice, still better operation.We use RVM to install the Management

Deploying Network application Services is a hassle, installing programs, upgrading database schemas, switching versions, and restarting services. The more steps, the more human involvement, the more prone to problems. Capistrano is Ruby on Rails to provide the deployment solution, the original name Switchtower, a lot of names, the results and people heavy, replaced now this, it is estimated to be in order

In the previous Ruby on Rails development from scratch (Windows) (iii)-Implementation of the jump between pages, we created two pages for the jump migration, this time we write a single form of maintenance of the TIM Delete Check the example. 1. This time we recreate a project depot, and follow the steps in the previous article to create a depot project. 2. Create a database. You can use the

In the practice of agile development, the test drive is indispensable. This article looks at a test-driven development example in rails. Before we wrote and conducted some unit tests and functional tests, our customers suddenly asked to add a feature: Each user of the system could query the product. We first sketched some sketches to sort out our ideas and designs, and then we started writing code. We already have a general idea of what to do, but i

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

view is available, because it is just a simple test, the model does not add, just change the action to the corresponding model of the mail or other. Next, configure the Gmail SMTP server in the Config/application.rb file, such as (because Gmail needs fq to test, so in real development, the configuration of the SMTP server for Gmail can be placed in the Production.rb file, In test.rb and development.rb files with other mailboxes instead, I use the QQ SMTP server, as long as the QQ in the SMTP

Error MySQL: Error: Query: not connected: Create Table 'schema _ migrations '('version' varchar (255) not null) engine = InnoDB Solution; Ruby is 1.8.6, rails is 2.2.3, MySQL is 5.1.51 This problem occurs because the libmysql. dll file in MySQL 5.1.3 and later cannot be properly connected to rails. Therefore, you only need to replace an old version of lib

The previous "[Ruby on Rails] and I learned hello World" mentioned that the route corresponding to the file is CONFIG/ROUTES.RBIn fact, we just added a line of code: Resources:p OSTsHowever, this code has multiple default routes, which can be viewed through rake routes, as follows:[Email protected]:/home/ywt/ror_tests/blog# rake routes Prefix Verb URI Pattern controller#action Posts ge

First, the new projectRails new App--skip-bundleModify Gemfile file after completion: Vim GemfileChange source to Taobao or Ruby-china.Add to this file: Gem ' Phantomjs 'Then run: Bundle installSo the project is new and completed.Second, generate PDFCreate a controller to add require ' PHANTOMJS ' to the head and add a get method for getting the PDF: get_pdfAdd the following code to this method:Phantomjs.base_dir = "/path/project_name/bin/phantomjs/"

ActiveRecord programming guide in Ruby on Rails, rubyonrails Avoid modifying the default ActiveRecord (Table Name, primary key, and so on) unless you have a very good reason (such as a database not under your control ).Put the macro-style method before the class definition (has_many, validates, and so on ). Preference has_expect: through is better than has_and_belongs_to_expect. Has_validation: through allo

The following issues have been encountered recently in a ROR Web project: Products can be classified by class navigation browsing, can be divided into three types of a,b,c, three categories under the other categories, at the same time, the base class and its classification can be extended by the user. Horizontally, the main class can be extended by the user, and the user can extend it vertically. Category information Store and Categories table: Id:integer PRIMARY Key Name:string category Nam