Ruby on Rails hands-on notes (installation using the entire process) _ruby topics

There is a chance to try rails again, only the original contact is 2, now has become 4, it seems that the installation is now faster than the original.

Rails 4 Installation

Aimed at installing the RVM

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Gem Install Rails

If not, it should be:

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sudo gem install rails

Install RVM can use a sentence

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Curl-l Https://get.rvm.io | Bash-s Stable

View Rails Version

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Rails-v
Rails 4.0.3

It seems that this is the latest version of the current

Ruby version

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We recommend Ruby 2.1.0 for use with Rails. We stopped supporting Ruby 1.8.x after Rails 3.2. Ruby 1.9.2+ 'll be supported until Rails 5.

Officially recommended with 2.1.0. That's the latest version.

Install SQLite

It seems that this is the database requirements for lightweight web sites such as Django and rails.

If the Mac OS

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Brew Install Sqlite3

Other things can be seen installed, such as openSUSE

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sudo zypper install Sqlite3

Rails 4 Hello,world

Can be generated directly with rails

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$rails New Hello

And then there's the

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Create
Create Readme.rdoc
Create Rakefile
Create config.ru
Create. Gitignore
Create Gemfile
Create app
Create App/assets/javascripts/application.js
Create App/assets/stylesheets/application.css
Create App/controllers/application_controller.rb
Create App/helpers/application_helper.rb
Create App/views/layouts/application.html.erb
Create App/assets/images/.keep
Create App/mailers/.keep
Create App/models/.keep
Create App/controllers/concerns/.keep
Create App/models/concerns/.keep
Create Bin
Create Bin/bundle
Create Bin/rails
Create Bin/rake
Create Config
Create Config/routes.rb
Create Config/application.rb
Create Config/environment.rb
Create Config/environments
Create Config/environments/development.rb
Create Config/environments/production.rb
Create Config/environments/test.rb
Create Config/initializers
Create Config/initializers/backtrace_silencers.rb
Create Config/initializers/filter_parameter_logging.rb
Create Config/initializers/inflections.rb
Create Config/initializers/mime_types.rb
Create Config/initializers/secret_token.rb
Create Config/initializers/session_store.rb
Create Config/initializers/wrap_parameters.rb
Create Config/locales
Create Config/locales/en.yml
Create Config/boot.rb
Create Config/database.yml
Create db
Create Db/seeds.rb
Create Lib
Create Lib/tasks
Create Lib/tasks/.keep
Create Lib/assets
Create Lib/assets/.keep
Create log
Create Log/.keep
Create Public
Create public/404.html
Create public/422.html
Create public/500.html
Create Public/favicon.ico
Create Public/robots.txt
Create Test/fixtures
Create Test/fixtures/.keep
Create Test/controllers
Create Test/controllers/.keep
Create Test/mailers
Create Test/mailers/.keep
Create Test/models
Create Test/models/.keep
Create Test/helpers
Create Test/helpers/.keep
Create Test/integration
Create Test/integration/.keep
Create Test/test_helper.rb
Create Tmp/cache
Create Tmp/cache/assets
Create Vendor/assets/javascripts
Create Vendor/assets/javascripts/.keep
Create Vendor/assets/stylesheets
Create Vendor/assets/stylesheets/.keep
Run Bundle Install

The package dependencies are then installed

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Fetching gem metadata from https://rubygems.org/.....
Fetching additional metadata from https://rubygems.org/.
Resolving dependencies ...
Using Rake (10.3.1)
Using i18n (0.6.9)
Using Minitest (4.7.5)
Using Multi_json (1.9.2)
Using Thread_safe (0.3.3)
Using Tzinfo (0.3.39)
Using Activesupport (4.0.3)
Using Builder (3.1.4)
Using Erubis (2.7.0)
Using Rack (1.5.2)
Using Rack-test (0.6.2)
Using Actionpack (4.0.3)
Using Mime-types (1.25.1)
Using Polyglot (0.3.4)
Using treetop (1.4.15)
Using Mail (2.5.4)
Using Actionmailer (4.0.3)
Using Activemodel (4.0.3)
Using activerecord-deprecated_finders (1.0.3)
Using Arel (4.0.2)
Using ActiveRecord (4.0.3)
Using bundler (1.5.3)
Using Coffee-script-source (1.7.0)
Using Execjs (2.0.2)
Using Coffee-script (2.2.0)
Using Thor (0.19.1)
Using railties (4.0.3)
Using Coffee-rails (4.0.1)
Using Hike (1.2.3)
Using JBuilder (1.5.3)
Using Jquery-rails (3.1.0)
Using JSON (1.8.1)
Using Tilt (1.4.1)
Using Sprockets (2.11.0)
Using Sprockets-rails (2.0.1)
Using Rails (4.0.3)
Using RDoc (4.1.1)
Using Sass (3.2.19)
Using Sass-rails (4.0.3)
Using SDoC (0.4.0)
Using Sqlite3 (1.3.9)
Using turbolinks (2.2.2)
Using Uglifier (2.5.0)
Your Bundle is complete!
Use ' bundle show [Gemname] ' to the where a bundled gem is installed.

Run Rails

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$rails Server

Such words open http://localhost:3000 can be seen, rails welcome interface welcome aboard, a bit similar to the DJANGO-CMS pony Brother ~ ~

Create Controller

As the official guide says http://guides.rubyonrails.org/getting_started.html

To execute a command:

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$rails Generate Controller Welcome index

The following files are created:

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Create App/controllers/welcome_controller.rb
Route get "Welcome/index"
Invoke Erb
Create App/views/welcome
Create App/views/welcome/index.html.erb
Invoke Test_unit
Create Test/controllers/welcome_controller_test.rb
Invoke Helper
Create App/helpers/welcome_helper.rb
Invoke Test_unit
Create Test/helpers/welcome_helper_test.rb
Invoke assets
Invoke Coffee
Create App/assets/javascripts/welcome.js.coffee
Invoke Scss
Create App/assets/stylesheets/welcome.css.scss

Add a default page to CONFIG/ROUTES.RB

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Root ' Welcome#index '

Run again

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Rails Server

will appear

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Welcome#index

Find me in App/views/welcome/index.html.erb

Everything came quickly, very suddenly.