https://github.com/bjornbytes/graphql-lua

GraphQL implementation in Lua
https://github.com/bjornbytes/graphql-lua

Last synced: 22 days ago
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GraphQL implementation in Lua

• Host: GitHub
• URL: https://github.com/bjornbytes/graphql-lua
• Owner: bjornbytes
• License: mit
• Created: 2015-11-24T04:17:40.000Z (about 9 years ago)
• Default Branch: master
• Last Pushed: 2023-03-13T08:29:08.000Z (almost 2 years ago)
• Last Synced: 2024-10-31T18:38:05.753Z (about 1 month ago)
• Language: Lua
• Size: 99.6 KB
• Stars: 185
• Watchers: 20
• Forks: 30
• Open Issues: 4
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

Awesome Lists containing this project

• awesome-graphql - graphql-lua - GraphQL for Lua. (Libraries / Lua Libraries)
• awesome-graphql - graphql-lua - GraphQL for Lua. (Libraries / Lua Libraries)

README

        
GraphQL Lua [![Join the chat at https://gitter.im/bjornbytes/graphql-lua](https://badges.gitter.im/bjornbytes/graphql-lua.svg)](https://gitter.im/bjornbytes/graphql-lua?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge&utm_content=badge)

===

Lua implementation of GraphQL.

Installation

------------

1. Using luvit

        lit install bjornbytes/graphql

    

2. Using luarocks

        luarocks install graphql

Example

---

```lua

local parse = require 'graphql.parse'

local schema = require 'graphql.schema'

local types = require 'graphql.types'

local validate = require 'graphql.validate'

local execute = require 'graphql.execute'

-- Parse a query

local ast = parse [[

query getUser($id: ID) {

  person(id: $id) {

    firstName

    lastName

  }

}

]]

-- Create a type

local Person = types.object {

  name = 'Person',

  fields = {

    id = types.id.nonNull,

    firstName = types.string.nonNull,

    middleName = types.string,

    lastName = types.string.nonNull,

    age = types.int.nonNull

  }

}

-- Create a schema

local schema = schema.create {

  query = types.object {

    name = 'Query',

    fields = {

      person = {

        kind = Person,

        arguments = {

          id = types.id

        },

        resolve = function(rootValue, arguments)

          if arguments.id ~= 1 then return nil end

          return {

            id = 1,

            firstName = 'Bob',

            lastName = 'Ross',

            age = 52

          }

        end

      }

    }

  }

}

-- Validate a parsed query against a schema

validate(schema, ast)

-- Execution

local rootValue = {}

local variables = { id = 1 }

local operationName = 'getUser'

execute(schema, ast, rootValue, variables, operationName)

--[[

{

  person = {

    firstName = 'Bob',

    lastName = 'Ross'

  }

}

]]

```

Status

---

- [x] Parsing

  - [ ] Improve error messages

- [x] Type system

- [x] Introspection

- [x] Validation

- [x] Execution

  - [ ] Asynchronous execution (coroutines)

- [ ] Example server

Running tests

---

```lua

lua tests/runner.lua

```

License

---

MIT