ruby on rails tutorial learn web development with rails

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Exploring some approaches to optimizing Ruby on Rails performance _ruby topics

window function to do the same work over 4 times times in 1.1 seconds. SELECT Depname, empno, salary, rank () over (PARTITION by depname order by salary DESC) from empsalary; Depname | Empno | Salary | Rank -----------+-------+--------+------ Develop | 6 | 6000 | 1 Develop | 7 | 4500 | 2 Develop | 5 | 4200 | 3 Personnel | 2 | 3900 | 1 Personnel | 4 | 3500 | 2 Sales | 1 | 5000 | 1 Sales | 3 | 4800 | 2 4 times times the acceleration has been impressive

Data transfer parsing of MVC structure in Ruby on Rails _ruby topics

If the reader has developed a rails based application, but there is a lot of confusion about the data transfer between MVC, congratulations, this article is about summarizing the methods and techniques of the rails data transfer. Ruby on Rails 3 (collectively, rails 3) is th

Agile Web Development with Rails Translator (18)

Agile Web Development with Rails Translator (18) The only interesting thing here is the code associated with the selection list. We have already assumed that the list of valid payment options is a property of the order model-it will be an array of an array in the model file. The first element of each sub-array is made into a string that is displayed as an option

How to install and configure ruby on rails + apache + mysql in centos

@ localhost www] # yum install sqlite-devel[Root @ localhost www] # gem install sqlite3-VOr[Root @ localhost public] # bundle install -- without sqliteNote that the rails server must be in your web root directory. If you install the bundle separately, it must also be in the web root directory. Otherwise, an error is reported.2. Start the server of

Explanation of Ruby on Rails's success tips (1)

The debate On Ruby On Rails in the Java Community is already fierce and there will be no signs of stopping in the future. Rails Supporters praised it for its amazing efficiency, which is about compared with Java development. As a Java programmer, your subconscious reaction is that you do not trust the high efficiency o

Installing the _ruby feature on the Ubuntu 12.04 Server deployment Ruby on Rails application

you are a domestic server, it is recommended to replace the RVM installation source with the Taobao mirror server, so that the installation can be faster! ' s/ftp/.ruby-lang/.org//pub//ruby/ruby/.taobao/.org//mirrors//ruby/g ' ~/.rvm/config/db Install Ruby with

Ruby on Rails Performance Optimization

Ruby on Rails (also called Rails) is a Ruby Framework for Internet applications that support databases, what are the core features of Ruby on Rails and the articles into the world of Ruby

Build Ruby on Rails in Ubuntu

Build Ruby on Rails in Ubuntu Ruby on Rails is an open-source Web framework written in ruby., Similar to J2EE and PHP. Ruby on Rails is a

Comparison between rails development and Java programming

Ruby on Rails development is essentially different from Java development. In Crossing boundariesIn the last phase of the series, Bruce Tate will outline the main differences found when developing a complex and scalable Web site from scratch using

Agile Web Development with Rails translations (18)

Agile Web Development with Rails translations (18) Here, the only interesting thing is the code associated with the select list. We have assumed that the list of valid payment options is an attribute of order model-it will be an array of an array in the model file. The first element of each sub array is a string that is displayed as an option selected, and the s

Ruby on Rails experience (1)-Installation

I was eager to learn something new. I heard that ROR is very efficient in development, so I chose Ruby on Rails. It was really difficult to install it, here I will write down my installation experience: 1) install Ruby Download installation package: http://rubyforge.org/fr

Simple contrast analysis Ruby on Rails and Laravel_ruby topics

There are many popular frameworks for online Web application development at the moment. There are also many different types of frameworks, such as those with a large number of plug-ins that can make you faster iterations (such as Rails), or other very simple and low-level (like flask).Two relatively more popular frameworks in

Ruby on Rails: traditional programming

, while the Java Enterprise Edition programming language is "too malformed", which is not easy to use. At present, there is already a workshop introducing Ruby on Rails, and another seven or eight books are being written in the workshop. At the first Ruby conference last year, a total of 60 developers attended the conference. about 200 people attended the confere

Getting started with DB2 database and Ruby on Rails

It brings great opportunities for the development of Web solutions. This is the first article in the DB2 with Ruby on Rails series. The following articles mainly show you how to get started with the DB2 database and Ruby on Rails.

What's the biggest advantage of Ruby on Rails

Ruby programming language is developed by the Japanese pine line, is a simple and fast object-oriented programming language, today mainly talk about the ruby framework--ruby on Rails (http://www.maiziedu.com/course/ruby/), Maybe some friends don't like

Agile Web Development with Rails Translator (16)

Agile Web Development with Rails Translator (16) 8.5 cycle C3: Complete shopping cart Let's start processing the empty shopping cart connection on the shopping cart display. We know we have to implement a Empty_cart () method within the store "controller". Let's delegate its responsibilities to the cart class. April 17, 2006 Update def Empty_cart find_cart.emp

Agile Web Development with Rails Translator (15)

Agile Web Development with Rails Translator (15) Organize your shopping cart Before we finish this work and show the customer, let's tidy up the shopping cart display page. Instead of simply dumping this product, let's add some formatting. At the same time, we can add some continuous shopping connections so that we don't have to press the back button only. Whe

Run Ruby on Rails in the wndow Environment

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 declaratio

Ruby on Rails: instanrails

Reference data:ForRuby on RailsIf you are not clear about it, you can refer to the following link information.Ruby on RailsInformation. Ruby: A pure Oo Script Language ..Ruby on Rails: Quick Building Web Of MVC Architecture Framework Description : Integrated Environment : Instant

[Ruby on Rails series]6, a simple code-word generator and interpreter (above)

"0" Ruby on Rails series review[Ruby on Rails Series] 1, Development environment preparation: Installation of VMware and Linux [Ruby on Rails series] 2,

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