In the last few weeks I have been working in the Sinatra and ActiveRecord sections of the Learn program. At the conclusion of this section is a MVC (model, view, controller) web application project using Sinatra and ActiveRecord. For this project I am going to chronicle my process from beginning to end in a multi-part blog miniseries. It’s gonna be great!

In the beginning, there was an outline

The toughest part of any new project is figuring out what to do. I flip-flopped for quite a while before settling on an elegantly simple idea: a concert list. The project is called Concertz, and it will be a web app that shows concert listings for artists. The homepage will display a list of concerts, possibly organized by date and location. If logged in, a user can create and edit artists as well as show listings.

My MVC outline for this project is below. The outline will be updated as the project goes on.

Concertz Outline

MODELS

User

has_many :artists

has_many :concerts #not sure if this is necessary

instance variables

email

password

instance methods

 authenticate

Artist

belongs_to :user

has_many :concerts

instance variables

name

instance methods

slug

class methods

find_by_slug

Concert

belongs_to :artist

has_one :user, through: artist

instance variables

concert_date

location

ticket_price

VIEWS

index.erb - Show upcoming and past concerts

layout.erb - layout template. Includes login/signup buttons if not logged in. If logged in, concerts sign out button.

Users

login.erb - Login Page, includes form with email/password for login

signup.erb - Sign Up Page, includes form with email/password for sign up

/users/show.erb - show user information. Includes artists and concerts. Artists headers link to artist page. Include “create artists” button

Artists

/artists/index.erb - show listing of all artists.

/artists/show.erb - Show artist info, list concerts belonging to artist. if current_user.id == @artist.user.id, include edit button and delete button and form to add concerts.

/artists/edit.erb - show form to edit artist

Concerts

/concerts/show.erb - show info about a particular concert. If logged_in, include edit and delete buttons

/concerts/edit.erb - show form to edit a particular concert

CONTROLLERS

ApplicationController

GET '/' - Verify if logged_in. index.erb

helper methods

current_user

logged_in?

UsersController

GET '/users/login' - Verify if logged_in. If true: login.erb. else: redirect to ‘/’.

POST '/users/login' - authenticates login. if true: add user_id to session and redirect to ‘/’. if false: redirect to ‘/login’

GET '/users/signup' - signup.erb

POST '/users/signup' - authenticate signup. if true: create user, add user_id to session and redirect to ‘/’. if false: redirect to ‘/signup’.

GET '/users/:id' - verify current_user.id matches params[:id]. If true: users/show.erb . else: redirect to ‘/’.

ConcertsController

GET '/concerts' - redirect to ‘/’

GET '/concerts/:id' - ‘concerts/show.erb’

POST '/concerts' - create new concert instance. redirect to ‘/concerts/:id’

PATCH '/concerts/:id' - edit concert. redirect to ‘/concerts/:id’

DELETE '/concerts/:id' - delete concert. redirect to ‘/’

ArtistsController

GET '/artists' - verify if logged_in ‘/artists/index.erb’

POST '/artists' - create new Artist through user. redirect to ‘/artists/:slug’

GET '/artists/:slug' - verify if logged_in. Artist.find_by(slug: params[:slug]). ‘/artists/show.erb’

GET '/artists/:slug/edit' - verify if logged_in. /artists/edit.erb.

PATCH '/artists/:slug' - update artist info. redirect to ‘/artists/:slug’

DELETE '/artists/:slug' - delete artist

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