Skip to main content

How to Install and Use Edge Rails?

How to Install and Use Edge Rails?


1.  If you want to freeze your application to the gems version currently available on your system, then go to root of your rails application and run

rake rails:freeze:gems

By running the above command a new directory “rails” will be created inside your vendors directory. When you run your rails framework, Your application will first check for this directory and if it’s present, Rails components will be loaded from this directory instead of using your system copy of rails, and thus you are switched from Gems Rails to Edge Rails.

2.  If at any point of time, you want to switch back from Edge Rails to Gem Rails. You can always do it by running the below command

rake rails:unfreeze

3. If you want to freeze your application to the latest development version, then run.

rake rails:freeze:edge

once you are switched to the latest development version, your javascripts and other configuration files needs to be updated corresponding to the latest version. For this you need to run,

rake rails:update

4. Freeze your application to a different version.
Consider you want to freeze your rails application to rails version 2.1.0, then you have to just run the command

rake rails:freeze:edge RELEASE=2.1.0

5. In order to find out what version of rails your application uses, From the  root of your rails application, run

script/about

your output will be something like below.

About your application’s environment
Ruby version              1.8.6 (i686-linux)
RubyGems version          1.1.1
Rails version             2.1.0
Active Record version     2.1.0
Action Pack version       2.1.0
Active Resource version   2.1.0
Action Mailer version     2.1.0
Active Support version    2.1.0
Edge Rails revision       unknown
Application root          your application path
Environment               development
Database adapter          mysql
Database schema version   20090622125330
Loaded suite script/about
Started

Finished in 0.000606 seconds.

0 tests, 0 assertions, 0 failures, 0 errors

6. Installing all other application depending gems locally.

1. Consider your application require the following two gems

a) will_paginate
b) mini_magick

Now go to your config/environment.rb file and config the required gems  as  below.

Rails::Initializer.run do |config|
config.gem “mini_magick”
config.gem “will_paginate”
end

2. Now consider these gems are not yet installed in your local machine. In order to install the above gems in your local machine,  from the root of your application run

rake gems:install

If you have already installed the above gems at some point of time, then skip this step and proceed to next step.

3. Now In order to make the above gems application-dependent rather than system-dependent gems. You need to unpack all these gems inside your application using

rake gems:unpack

The above command will create a new directory “gems” inside your vendor folder and unpack the two gems “will_paginate” and “mini_magick” inside the “gems” directory.

4. Unpack gems individually

There are two ways to unpack the gems individually.

Either run this from the root of your application.

rake gems:unpack GEM=will_paginate

or

change your directory to /vendor/gems and run

gem unpack “gem_name”

Comments

Post a Comment

Popular posts from this blog

Rails Migration Difference between Text and String

Rails Migration Difference between Text and String ? While working with Rails Migration Difference between Text and String is important to be known to every developer. Columns and their data types are finalized while deciding Table structure. This tutorial will help understand difference between String and Text column type and illustrate how to write Rails Migration implementing the same. You might want to read about database.yml files for specifying database configuration for Rails Application. 1. Concepts When String or Text data type is required?     Whenever you require your column to store information which is lengthy in size (Many characters), you need to consider String or Text data type for the column.     Both of them let you store Many(How Many - will see later) characters Difference between String and Text Considering MySQL database Feature     String     Text Length     1 to 255     ...
Post a Comment
Read more

Error malloc(): memory corruption nginx with passenger?

Error malloc(): memory corruption nginx with passenger Passenger issue resolving steps :  sudo gem uninstall passenger(uninstall all passenger) sudo gem install passenger sudo passenger-install-nginx-module --auto --auto-download --prefix=/opt/nginx --extra-configure-flags=none Update nginx config file with new passenger version and restart the nginx
1 comment
Read more

rake db migrate with down, up, redo, rollback options in rails

rake db migrate with down, up, redo, rollback options ? rake db migrate - This can be used to migrate your production/test database using various options like up, down, step, redo, version etc. In this tutorial we will learn how all these options can be used with rake tool to migrate the database. What is rake? rake is basically ruby make. i.e. make tool for ruby It has similar functionality to the make tool that you may have used on unix based systems for comopiling running some kind of script. rake allows you to ruby particular task in the environment that you specify. How to Install rake? You can install rake by installing gem 'rake' as, gem install rake Above command will install the latest version of rake tool avaialable. Various rake db migrate commands Operation     Command     Description General     rake db:migrate     This will migrate your database by running migrations that are not run yet Running specific Migra...
Post a Comment
Read more