Welcome to Rails Application¶ ↑

Rails is a web-application framework that includes everything needed to create database-backed web applications according to the Model-View-Control pattern.

This pattern splits the view (also called the presentation) into “dumb” templates that are primarily responsible for inserting pre-built data in between HTML tags. The model contains the “smart” domain objects (such as Account, Product, Person, Post) that holds all the business logic and knows how to persist themselves to a database. The controller handles the incoming requests (such as Save New Account, Update Product, Show Post) by manipulating the model and directing data to the view.

Getting started with the application¶ ↑

You can start this application by using rails server. Just type rails server in the root directory of this application and it will fire up the rails server.

But before that you need to make sure that you have created your databases succesfully using rake db:migrate. The database tables are sample tables as of now for CSEteachers, CSEsubjects and BtechCSE6th semester timetable. Obviously you can create such tables for other branches and for other semesters to make this working for others too.

Now open the location as specified by the prompt in your browser and it will open up the site. It does not include any data in it which means you have to create your own data. By this point you can explore various end points and the code will help you in knowing more and more about the application. Keep watching the code while I make this documentation better.

Description of Contents¶ ↑

The default directory structure of a generated Ruby on Rails application:

|-- app
|   |-- assets
|   |   |-- images
|   |   |-- javascripts
|   |   `-- stylesheets
|   |-- controllers
|   |-- helpers
|   |-- mailers
|   |-- models
|   `-- views
|       `-- layouts
|-- config
|   |-- environments
|   |-- initializers
|   `-- locales
|-- db
|-- doc
|-- lib
|   |-- assets
|   `-- tasks
|-- log
|-- public
|-- script
|-- test
|   |-- fixtures
|   |-- functional
|   |-- integration
|   |-- performance
|   `-- unit
|-- tmp
|   `-- cache
|       `-- assets
`-- vendor
    |-- assets
    |   |-- javascripts
    |   `-- stylesheets
    `-- plugins

app

Holds all the code that's specific to this particular application.

app/assets

Contains subdirectories for images, stylesheets, and JavaScript files.

app/controllers

Holds controllers that should be named like weblogs_controller.rb for
automated URL mapping. All controllers should descend from
ApplicationController which itself descends from ActionController::Base.

app/models

Holds models that should be named like post.rb. Models descend from
ActiveRecord::Base by default.

app/views

Holds the template files for the view that should be named like
weblogs/index.html.erb for the WeblogsController#index action. All views use
eRuby syntax by default.

app/views/layouts

Holds the template files for layouts to be used with views. This models the
common header/footer method of wrapping views. In your views, define a layout
using the <tt>layout :default</tt> and create a file named default.html.erb.
Inside default.html.erb, call <% yield %> to render the view using this
layout.

app/helpers

Holds view helpers that should be named like weblogs_helper.rb. These are
generated for you automatically when using generators for controllers.
Helpers can be used to wrap functionality for your views into methods.

config

Configuration files for the Rails environment, the routing map, the database,
and other dependencies.

db

Contains the database schema in schema.rb. db/migrate contains all the
sequence of Migrations for your schema.

doc

This directory is where your application documentation will be stored when
generated using <tt>rake doc:app</tt>

lib

Application specific libraries. Basically, any kind of custom code that
doesn't belong under controllers, models, or helpers. This directory is in
the load path.

public

The directory available for the web server. Also contains the dispatchers and the
default HTML files. This should be set as the DOCUMENT_ROOT of your web
server.

script

Helper scripts for automation and generation.

test

Unit and functional tests along with fixtures. When using the rails generate
command, template test files will be generated for you and placed in this
directory.

vendor

External libraries that the application depends on. Also includes the plugins
subdirectory. If the app has frozen rails, those gems also go here, under
vendor/rails/. This directory is in the load path.

TODO¶ ↑

• Campus Map facility also needs to be included.