ruby on rails example sites

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

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

View View is divided into builder mode and rhtml mode. The following is an example of the builder mode. XML. Div (: class => "productlist") DoXML. timestamp (time. Now)@ Products. Each do | product |XML. Product doXML. productname (product. Title)XML. Price (product. Price,: currency => "USD ")EndEndEnd If the tag and built-in method are repeated, you can use something! () To generate tags Rhtml is similar to JSP. The H method provides

(1) New gem' Devise '(2) Add devise configuration file/workspace/shop:$ rails Generate devise:install User create config/initializers/devise.rb Create config/locales/devise.en.yml===============================================================================Some Setup must do manuallyifYou haven'T yet:1. Ensure you have defined default URL optionsinchyour environments files. here isAn example of default_url

Let's take a look at some tips for debugging this time. First, and most importantly, writing test code, writing unit tests and functional tests in rails is simple, using them to reduce the rate of bugs, or to avoid bugs in your previous code. The test code tells you what works and what doesn't, and the test code helps you isolate the problematic code, because sometimes the bug doesn't show up quickly. If the problem occurs in a model, we can use th

A Brief Introduction to Ruby on Rails's support for PostgreSQL array types, railspostgresql I am very happy to announce that Rails 4.0 now supports PostgreSQL array types. you can easily create fields of the array type through: array => true in migration. you can also add other options (length, default, and so on) when creating an array field) create_table :table_with_arrays do |t| t.integer :int_array, :ar

For example, if you have a users table, wait until the user ID array:Select ID from the users where age > 20;To implement the above SQL statements, there are several ways to do this in rails: User.where (' Age > '). Select (: ID). Collect (:id) User.where (' Age > '). Select (: ID). map (:id), select ID from ' Users ' where (age User.where (' Age > '). Pluck (: ID), SELECT ' users '. ' ID

In Ruby rails, if you want to save a property (or read a property), and you want to do something else when you save the property (or read a property)You can use the method that overrides the property's setup or reader.For example, a models table has a field called name, and you want to manipulate the name.Method One,Class Model Method Two,Similar to method one, f

in the article The rest API in Ruby on Rails uses an example of creating your own online translator tool based on cloud Platform + cloud services , using Ruby's net::http to initiate HTTP requests to access language translation services on IBM Bluemix , Tip: End offile reachedThe code is as follows:Auth = "C9819718-4660-441c-9df7-07398950ea44:quvrjpqwsgox"; surl

Converting an array to activerecord::relation is a common requirement. For example, in my project, the backup_projects return value of the array form is obtained from the method. In order to sort and page out this collection, I need to convert it to activerecord::relation form. The conversion method is as follows: Project = Project.backup_projects project.map{|i| i.id} @projects = Project.where (: id = = Project) Now @projects is the activerecord::rel

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 alr

The most frequently run query on a database is to return a conforming result set based on a specified condition, and the query may be to return all the names ' Dave's order, or all the titles on a blog with rails, in many other frameworks and programming languages, you need to create SQL to execute queries, and Active record takes advantage of the dynamic capabilities that the Ruby language contains. For

The last Test Modeul problem has not been resolved, but the following to continue, this time to test controller. 1. In the test\functional directory, rails has generated a corresponding test file for our controller, and note that Application_controller does not generate test files. Let's take control of the login Logincontroller as an example, open the LOGIN_CONTROLLER_TEST.RB, which reads as follows: Re

Cost considerations? Development speed problems? Or in the future? Cost considerations? Development speed problems? Or in the future? Reply: I don't know if a large proportion of new websites use python or ruby, but we developed the scallop Network Based on Python. The main reason is the development speed. In my experience, to complete similar tasks, the Python code volume is half of that of Java. A smaller amount of code means faster development spe

regular expression to contain % r, and then the selected delimiters. This is very useful. When the described mode contains the forward slash character, you do not want to escape it: # Following matches a single slash character, no escape required%r|/| # Flag characters are allowed with this syntax, too%r[ Regular Expression mode: Except the control characters, (+? . * ^ $ () [] {}| \), All characters match. Escape control characters can be preceded by a backslash. Search and replace: The

The example explains the Hook method in Ruby and adds a hook to the method call. The example explains ruby. The Hook method is similar to the event-driven device. You can execute a specific callback function after a specific event occurs. This callback function is the hook method (more vividly described: The Hook metho

. This is useful when the described pattern contains a forward slash character that does not want to be escaped: # following matches a single slash character, no escape required %r|/| # Flag characters are allowed with this syntax, too%r[ Regular expression pattern: Except for the control character, (+?. * ^ $ () [] {} | \), all characters match. You can escape the control character preceded by a backslash. Search and Replace: The string method is most important, using r

Ruby is currently the most flexible and agile programming language. It has special application methods and can bring a pleasant programming environment to programmers. Here we will learn the skills for Ruby to get the current class name. Using pp () to output two-dimensional arrays in Ruby Ruby on