heroku ruby on rails

1, Purpose: Use Heroku to deploy the development environment to the production environment. Heroku is dedicated to deploying rails and other Web applications, and the process of deploying rails applications is straightforward-as long as the source code is incorporated into the GIT version control system.2. Build

reported:Rake aborted!Undefined method 'prerequisites 'for nil: NilClass(See full trace by running task with -- trace) Execute the command again $ Bundle exec rake assets: precompile -- trace The following error is reported: Rake aborted!Undefined method 'prerequisites 'for nil: NilClass/Usr/local/ruby/lib/ruby/gems/1.9.1/gems/rspec-rails-2.0.1/lib/rspec/

Assets:precompile--trace The error is as follows: Rake aborted!Undefined method ' Prerequisites ' for Nil:nilclass/usr/local/ruby/lib/ruby/gems/1.9.1/gems/rspec-rails-2.0.1/lib/rspec/rails/tasks/rspec.rake:3:in ' Conclusion is rspec-rails-2.0.1 and rake,

Premise: Already installed Ruby, Rails, Git =============================================================== Setup Heroku for the first time $sudo Gem Install Heroku Set Heroku account number, need email and password, please apply for free in http://www.heroku.com/ $

Ruby on Rails Session 1: How to Build a Ruby on Rails on the Ubuntu., railsubuntuAbout Ruby on Rails Ruby on Rails is an application stack t

problems that common applications face, such as database optimization and distributed deployment, which is a problem that a large concurrent WEB application needs to face and solve, For example, you can deploy a distributed database in a master-slave way, or split the database in a split-or-table manner. Also, when running rails servers or other back-end applications, monitoring with a different process, such as using God to monitor the

About Ruby on Rails Ruby on Rails is an application stack that provides developers with a framework to quickly create a variety of Web applications. ruby on Rails does take a little while to install on a virtual server, but luckil

in a non-Rails environment. After configuring the ruby environment and the Capistrano plugin, install the following Plugin:Listing 22. Using Capistrano in a non-Rails Environment gem sources -a http://gems.github.com/ gem install leehambley-railsless-deploy Conclusion This article focuses On some useful practices when using

The first two sections of this series have already covered how to configure the Ruby on Rails development environment, and now it's time to get to the point!Part1. Pre-development Preparation The main task of this time is to develop the first rails program. In particular, this time I chose a (PAAs development platform), which is the Cloud 9 platform describ

Keywords: Ruby on Rails, instantrails, windows, getting started, tutorial I always wanted to try Ruby on Rails, but I was not familiar with Apache and MySQL, and I was not confident in setting up the rails environment. So I never started. After learning about instantrails,

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

1. The following two reasons are causing your Rails application to slow down: Ruby and rails should not be used as the preferred place for Ruby and rails. (with Ruby and Rails do

-related work. Memory problems are the primary cause of Slow Ruby applications. The 80-20 rule for Rails performance optimization is like this: the 80% increase is due to the memory optimization, and the remaining 20% is another factor. Why is memory consumption so important? Because the more memory you allocate, the more work Ruby GC (Ruby's garbage collection m

I have always been very interested in Ruby on Rails. I want to see something that has been praised by many people, but I have been working on windows development, it is still a headache to build the development environment of Ruby on Rails, Which is why Ruby on

Explore some methods to optimize Ruby on Rails performance, rubyrails 1. There are two reasons for slowing down your Rails application: Ruby and Rails should not be used as the preferred choice. (I used Ruby and

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 difference between a single-quote string and a double-quote string: Single-quote strings the

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

Installing Ruby with Upgrade RubyGemstip: If you are prompted for permission issues during the installation process in the Ubuntu environment, you can use sudo make and sudo makes install. 1.Ruby Installation wget http://ftp.ruby-lang.org/pub/ruby/1.9/ruby-1.9.3-p125.tar.gz \ TAR-XZVF

languages, you also need to prepare other files ): [1] En. yml (English version) [2] zh-CN.yml (Simplified Chinese)2.3 Step 3: edit the config/locales folder (1) For example, in this folder, we can see that there is only one file: En. yml. Open it and find that there are only two lines of code: en: hello: "Hello world" This is a yml file template. Now we need to replace it with the above en. yml Click "EN. yml" to open the file, copy and paste the webpage content, and overwrite the original e

This chapter launches the introduction of model: including check and delete operation. And then the above section, [Ruby on Rails] and I learned the HelloWorldCreating models using commands to create modelsCreate a table post, default comes with two field title:string, Content:text, use the singular post instead of the plural in the model by convention postsCD Blograils G model post title:string Content:tex