GraphQL Basics

An Alternative to RESTful APIs

Lauren Cunningham
Apr 17 · 6 min read
photo credit: freesion.com

The Origin Story

Introduction

Queries and Mutations

query [
user(id:278){
name
subscriptions {
title
}
bio
friends (first:3){
name
}
}
]
{
"data":{
"user": {
"name": "Lucy",
"subscriptions": [
{title: "Tech for Good"}
{title: "Daily Digest"}
],
"friends": [
{name: "Todd"},
{name: "Tammy"}
]
}
}
}
mutation CreateReviewForEpisode($ep: Episode!, $review: ReviewInput!) {
createReview(episode: $ep, review: $review) {
stars
commentary
}
}
{
"ep": "JEDI",
"review": {
"stars": 5,
"commentary": "This is a great movie!"
}
}

Schemas and Types

schema {
query: Query
mutation: Mutation
}
type: Member {
id: ID!
name: String
bio: String
}
interface Vehicle {
make: String
model: String
year: Int
}
type Car implements Vehicle {
id: ID!
make: String
model: String
year: Int
}
input KarmaScore {
score: Int
comments: String
}

Handy Tools and Libraries

The Case for GraphQL

CodeX

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