Installation

Structure

filename	description
app\controllers\application_controller.rb	defines that user must be logged in order to access the web app, defines the required fields for user during sign-up or profile-edit
app\controllers\articles_controller.rb	contains the methods: index (for displaying all articles in database) show (for displaying a specific article id, provided in article_params) new (defines "created_by" value to be set according to current users' username, creates a new unsaved record, and renders the form) create (inserts the user input to the database) article_params (defines what basic parameters each article has)
app\controllers\cars_controller.rb	contains the methods: index (for displaying all cars in database), show (for displaying a specific car details given provided id from car_params), new (creates a new unsaved record and generates the create car form in the views), create (inserts the user input to the database), car_params (defines the car parameters)
app\controllers\welcome_controller.rb	defines method "index" which redirects the browser to welcome\index.html.erb upon reaching localhost:3000

filename	description
app\models\application_record.rb	inherits from ActiveRecord::Base, a single point of entry for all the application models, so that ActiveRecord wont include unrelated methods
app\models\article.rb	defines article validations (empty, as there are no requirements for articles)
app\models\car.rb	defines validations for car, that includes: title exists (which is also validated on client side), avatar (photo) exists, that the uploaded photo is an image mime type, with the extensions jpeg,gif,png
app\models\user.rb	defines user validations, that includes: devise (user can register, be confirmed, be remembered, be validated), defines an array "role" that is either user or admin, defines role for user, defines roles for select box using humanize (for capitalization), and defines that user does not need to be confirmed via email

filename	description
config\routes.rb	defines the resources cars & articles (resource is a way to route http requests to ruby actions in the specified controller, without specifing each individual request type), generates all needed routes for devise, includes a redirection to the index page from both root and users

filename	description
app\views\welcome\index.html.erb	index page displayed when requesting localhost:3000

filename	description
app\views\articles\index.html.erb	display all articles in database
app\views\articles\new.html.erb	create a new article
app\views\articles\show.html.erb	display a specific article (provided params id)

filename	description
app\views\cars\index.html.erb	display all cars in database
app\views\cars\new.html.erb	create a new car
app\views\cars\show.html.erb	display a specific car (provided params id)

filename	description
app\views\devise\registrations\new.html.erb	sign up for a new user
app\views\devise\registrations\edit.html.erb	edit profile page for current user
app\views\devise\sessions\new.html.erb	log in page for existing user
app\views\layouts\application.html.erb	top navbar that displays either current users username if signed in, or 'sign up' and 'log in' links