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|
package graphql_test
import (
"context"
"encoding/json"
"fmt"
"os"
"github.com/graph-gophers/graphql-go"
)
type Map map[string]interface{}
func (Map) ImplementsGraphQLType(name string) bool {
return name == "Map"
}
func (m *Map) UnmarshalGraphQL(input interface{}) error {
val, ok := input.(map[string]interface{})
if !ok {
return fmt.Errorf("wrong type")
}
*m = val
return nil
}
type Args struct {
Name string
Data Map
}
type mutation struct{}
func (*mutation) Hello(args Args) string {
fmt.Println(args)
return "Args accepted!"
}
func Example_customScalarMap() {
s := `
scalar Map
type Query {}
type Mutation {
hello(
name: String!
data: Map!
): String!
}
`
schema := graphql.MustParseSchema(s, &mutation{})
query := `
mutation {
hello(name: "GraphQL", data: {
num: 5,
code: "example"
})
}
`
res := schema.Exec(context.Background(), query, "", nil)
enc := json.NewEncoder(os.Stdout)
enc.SetIndent("", " ")
err := enc.Encode(res)
if err != nil {
panic(err)
}
// output:
// {GraphQL map[code:example num:5]}
// {
// "data": {
// "hello": "Args accepted!"
// }
// }
}
|
