• One endpoint `/graphql`
  • Query
  • Mutation
  • Subscription
• Return type
  • Enums are useful

enum PhotoCategory {
  PORTRAIT
  ACTION
  TEST
}

Aliasing a query:

query {
  alias : totalPets(status:AVAILABLE)
}

Neat link

• https://developer.github.com/v4/explorer/

Handling multiple behaviours for a single endpoint

• array of options, filters… handle on the server

Dont forget you can put two queries in one:

query{
  query1{...}
  query2{...}
}

graphql scalar type

• Int
• Float
• String
• Boolean
• ID

Nullable vs non nullable

name: String!

description: String

Nullable list of nullable values

photos: [Photo]

non-Nullable list of nullable values

photos: [Photo]!

non-Nullable list of non-nullable values

photos: [Photo!]!

Mutations

• ~should~ always return atleast something

type mutation{
  get(): Boolean!
}

Things that arent gonna be a custom scalar, it will probably be an custom ENUM

scalar DateTime

type Photo {
  created: DateTime!
  updated: DateTime!
}

https://raw.githubusercontent.com/sogko/graphql-shorthand-notation-cheat-sheet/master/graphql-shorthand-notation-cheat-sheet.png

const server = new ApolloServer({

  typeDefs,
  resolvers,
  mocks: true // TODO -- super handy

});

"""
Triple double-quote for the type. This is doc for the type
"""
type X {
  "Single double-quote for the field"
  field: ID!
}

returns the typename for the field

__typename

...on 

type pet{
  id
  name
  weight
  ...on Cat{
    curious
  }
  ...on Stingray{
    stingy
  }
}

resolvers are used to get data wherever it is