go mod download
go run server.go
The playground will be available in: http://localhost:8080
To create the skeleton like this repo, you can follow the steps (The blog post in the references was used to get this simple version):
go mod init github.com/girorme
go get github.com/99designs/gqlgen
go run github.com/99designs/gqlgen init
The commands above will generate some files, including the graph\schema.graphqls which contains the graphql shcema for the API.
Example
# in the schema we will be doing Query and Mutations
schema {
query: Query
mutation: Mutation
}
# These are the two queries we will be doing
type Query {
characters: [Character!]!
search(name: String!): Character
}
# This is a mutation we will be doing
type Mutation {
add(character: CharacterInput!): Character!
}
# just a input type for our mutation
input CharacterInput {
name: String!
likes: Int!
}
# character schema
type Character {
id: ID!
name: String!
likes: Int!
}Delete graph/schema.resolvers.go and in graph/resolver.go add the following comment on Resolver struct:
//go:generate go run github.com/99designs/gqlgen
type Resolver struct{}This will auto-generate the code for our Schema that we have written in schema.graphqls.
Now in the graph folder type:
$ go generate
tip: If any error occurs with missing depencies, you can fix with:
go env -w GOFLAGS=-mod=mod
Ref: golang/go#44129 (comment)
After the generate command now you can see the models_gen.go file with the generated structs and json tags.
Also in schema.resolvers.go we have the methods not implemented based on graphql schema created by us in previous steps (In this repo you'll find some implementation based on the post listed in the end of this readme)