Reasonable GraphQL
@VladimirNovick
GDE & Independent Consultant
Web / Mobile / VR / AR / IoT
vnovick.com
REST vs GraphQL
https://swapi.co/api/planets/1
https://swapi.co/api/species/1
https://swapi.co/api/vehicles/1
https://swapi.co/api/films/1
https://swapi.co/api/people/1
https://swapi.co/api/spaceships/1
REST in ReasonML
Fetching...
bs-fetch
Decoding...
bs-json
So where is the problem?
It's demo time
Why REST is bad?
- No knowledge of data types
- Even minor changes can introduce breaking changes
- No stability
GraphQL
A query language for your API
GraphQL SDL
Resolvers
It's demo time
How we can get started
Installations
Send Introspection query
saves graphql_schema to disk
Create Apollo client
Wrap component with Provider
Define query by using graphql_ppx
Create query component
Wrap UI in created query component
Treat all optional types
It's demo time
It's demo time
Authentication
Tips and Tricks
use jsConverter
use bsRecord
https://github.com/jaredly/get_in_ppx
Thank You
@VladimirNovick
GraphQL in ReasonML
By vladimirnovick
GraphQL in ReasonML
ReasonML and GraphQL is a match made in heaven. Imagine getting type error if you have mistake in your GraphQL type even before compiling your client code. How cool is that? In this talk we will see how you can use GraphQL with Reason and what benefits it will bring.
