Somewhat of a walkthrough…
Sinatra, surprisingly enough was the toughest module I’ve had to face, so I decided to put together a list of handy tips and tricks to help the next student who faces difficulty in doing their project.
Corneal
The easiest way to get a Sinatra project going, where you can utilize CRUD is to use Corneal. Corneal is a gem that will help create models, views and controllers for your project so you can utilize MVC. So we begin with installing Corneal with
gem install corneal
Create a project
To create your project, you first need to prepare a folder for your repo and then type in:
corneal new APP-NAME
APP-NAME being the name of your Sinatra app, I called mine Student-Portfolio
Models
Now we figure out the M of the MVC. M is for Model and to create our models we use
corneal model NAME
NAME being the models you will use for your project. I used User and Project for my models. So I entered :
corneal model User
and
corneal model Project
this will create the models and migrations that our project will use.
Migrations
Once my migrations were created by the Corneal gem all I had to do was enter my fields into it. I used
class CreateUsers < ActiveRecord::Migration
def change
| create_table :users do | t |
t.string :firstname
t.string :lastname
t.string :username
t.string :password_digest
t.timestamps null: false
end
end
end
for my Users table and:
class CreateProjects < ActiveRecord::Migration
def change
create_table :projects do |t|
t.string :title
t.string :module
t.string :description
t.string :github
t.integer :user_id
t.timestamps null: false
end
end
end
The cool thing is that ActiveRecord and Corneal takes care of most of the work and all I had to do was add the attributes and their types that I wanted my models to have in the migrations file.
Models
The only thing I had to do next was edit the models to include some features. I included has_secure_password to my User model to allow bcrypt and :password_digest to work and has_many :projects to show the relationship that Users had their own projects. I added belongs_to :user to the Project model to show that the User owned the Project.
Views & Controller
Corneal will create many of the views required by a model controller automatically with
corneal controller NAME
NAME being the model that we are building views and controllers for. I once again used Project and User and ended up with all my views and controllers for the models realy to edit.
Now although Corneal will create generic views and controller routes, it is up to the coder to really modify wherever they see fit. I for instance did not use all the views created and I also used views not auto-generated. It all depends on the needs of the application. I ended up using all the generated project views, but didn’t use the show or edit views created by the Corneal gem. I did however create two other views in my view/users folder.
Layout
I used the layout.erb file to create some nav bars for my app, not to difficult, just incorporating basic Ruby to check if a user was logged in to display one of 2 nav bars.