victorwhy

{
  products(first: 3) {
    edges {
      node {
        id
        ...variantData
      }
    }
  }
}

victorwhy

The proto property of Object.prototype is an accessor property (a getter function and a setter function) that exposes the internal [[Prototype]] (either an object or null) of the object through which it is accessed.

FYI MDN says proto is being deprecated - use Object.getPrototypeOf and Object.setPrototypeOf (setter not recommended to use) instead.

Basically, when a new instance of a constructor is created, it's proto is the same as the constructor's prototype.

// Declare a function to be used as a constructor
function Employee() {
    /* initialise instance */

victorwhy

HTML and Sinatra really only support the GET and the POST methods. In order to be able to use the PUT and DELETE methods in Sinatra, you kind of have to "trick" the form to go to the right place. Then you can name the routes the proper way - otherwise you can only really work with GET and POST.

I used the Craiglist Jr challenge for some examples. Let's look at a quick example of a POST form/method/route- in this case, we're creating a new Craigslist article:

POST form and corresponding route:

<form action="/article/new" method="post">
  --------------------------------
  YOUR FORM FIELDS HERE

victorwhy

Rails ActiveRecord (association) - Cheatsheet

http://guides.rubyonrails.org/association_basics.html

Types of associations

• belongs_to : TABLE_NAME
• has_one : TABLE_NAME [:through => :TABLE_NAME]
• has_many : TABLE_NAME [:through => :TABLE_NAME]
• has_and_belongs_to_many : TABLE_NAME [:join_table => :TABLE_NAME]