Project name

Graphql Schema Generator

Description

Generate Go code from a GraphQL schema. For example:

type test {
  id: Int!
  name: [String]
}

will generate:

package schema

import graphql "github.com/graphql-go/graphql"

type Test struct {
        Id   int      `json:"id"`
        Name []string `json:"name"`
}

func GetTest() *graphql.Object {
        return graphql.NewObject(graphql.ObjectConfig{Name: "test", Fields: graphql.Fields{"id": &graphql.Field{Type: graphql.NewNonNull(graphql.Int)}, "name": &graphql.Field{Type: graphql.NewList(graphql.String)}}})
}

Usage

Generate Go Code

Simple

• Use the webpage

Advanced

• Use the graphql Api to get Go code from a schema string

{
 generateGoCode(schemaStr: "your schema file at string the \n(breaks are importent) ")
}

Expert

go get github.com/fasibio/graphqlSchemaGenerator-go

import (
	"github.com/fasibio/graphqlSchemaGenerator-go/goCodeGenerator"
	"github.com/fasibio/graphqlSchemaGenerator-go/schemaInterpretations"
)
  //return the Golang Code (String)
  goCode := goCodeGenerator.GetGenerateFile(schemaInterpretations.GetSchemaList(schemaStr),   schemaInterpretations.GetEnumList(schemaStr))

Use the generated code in your Go application

See https://github.com/graphql-go/graphql to learn how to use GraphQL in Go

• Generate a folder/package schema in your project
• Copy the generated Go file to a folder schema (for example a schema.go)
• Create GraphQL queries and set the type as the generated Graphql Schema you want to use. As result you can fill the generated struct

	fields := graphql.Fields{
		"test": &graphql.Field{
			Type: schema.GetTest(),// <- this is the generated Funktion
			Args: graphql.FieldConfigArgument{
				"type": &graphql.ArgumentConfig{
					Type:         graphql.String,
					DefaultValue: "developer",
				},
			},

			Resolve: func(p graphql.ResolveParams) (interface{}, error) {
				var result schema.Test // <- this is the generated Struct
					result = schema.Test{
						Id:   "MUHAHAH",
						Name: "Fasibio",
					}

				return result, nil
			},
		},

Notes

• The generator is a work in progress
• I'm happy if you want to help to make it better
• So feel free to open an issue or send pull requests

TODO

• understand schemas
• generate code for schemas
  • understand deprecated
  • [] generate code for deprecated
• understand enums
• [] generate code for enums

License

GNU General Public License v3.0