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gql-query-builder

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Readme

GraphQL Query Builder

A simple helper function to generate GraphQL queries using plain JavaScript Objects (JSON).

Usage

Install

npm install gql-query-builder --save or yarn add gql-query-builder

API

import * as gql from 'gql-query-builder'

const query = gql.query(options: object)
const mutation = gql.mutation(options: object)

where options is { operation, fields, variables } or an array of options

Name	Description	Type	Required	Example
operation	Name of operation to be executed on server	String	Yes	getThougts, createThought
fields	Selection of fields	Array	Yes	['id', 'name', 'thought'] ['id', 'name', 'thought', { user: ['id', 'email'] }]
variables	Variables sent to the operation	Object	No	{ key: value } eg: { id: 1 } { key: { value: value, required: true } eg: { email: { value: "user@example.com", required: true }, password: { value: "123456", required: true } }

You can also import query or mutation individually:

import  { query, mutation } from 'gql-query-builder'

query(options: object)
mutation(options: object)

Examples

Query:

import * as gql from 'gql-query-builder'

const query = gql.query({
  operation: 'thoughts',
  fields: ['id', 'name', 'thought']
})

console.log(query)

// Output
query {
  thoughts {
    id,
    name,
    thought
  }
}

Query (with variables):

import * as gql from 'gql-query-builder'

const query = gql.query({
  operation: 'thought',
  variables: { id: 1 },
  fields: ['id', 'name', 'thought']
})

console.log(query)

// Output
query ($id: Int) {
  thought (id: $id) {
    id, name, thought
  }
}

// Variables
{ "id": 1 }

Query (with nested fields selection)

import * as gql from 'gql-query-builder'

const query = gql({
  operation: 'orders',
  fields: [
    'id',
    'amount',
    {
     user: [
        'id',
        'name',
        'email',
        {
          address: [
            'city',
            'country'
          ]
        }
      ]
    }
  ]
})

console.log(query)

// Output
query {
  orders  {
    id,
    amount,
    user {
      id,
      name,
      email,
      address {
        city,
        country
      }
    }
  }
}

Query (with required variables):

import * as gql from 'gql-query-builder'

const query = gql.query({
  operation: 'userLogin',
  variables: {
    email: { value: 'jon.doe@example.com', required: true },
    password: { value: '123456', required: true }
  },
  fields: ['userId', 'token']
})

console.log(query)

// Output
query ($email: String!, $password: String!) {
  userLogin (email: $email, password: $password) {
    userId, token
  }
}

// Variables
{
  email: "jon.doe@example.com",
  password: "123456"
}

Mutation:

import * as gql from 'gql-query-builder'

const query = gql.mutation({
  operation: 'thoughtCreate',
  variables: {
    name: 'Tyrion Lannister',
    thought: 'I drink and I know things.'
  },
  fields: ['id']
})

console.log(query)

// Output
mutation ($name: String, $thought: String) {
  thoughtCreate (name: $name, thought: $thought) {
    id
  }
}

// Variables
{
  "name": "Tyrion Lannister",
  "thought": "I drink and I know things."
}

Mutation (with required variables):

import * as gql from 'gql-query-builder'

const query = gql.mutation({
  operation: 'userSignup',
  variables: {
    name: { value: 'Jon Doe' },
    email: { value: 'jon.doe@example.com', required: true },
    password: { value: '123456', required: true }
  },
  fields: ['userId']
})

console.log(query)

// Output
mutation ($name: String, $email: String!, $password: String!) {
  userSignup (name: $name, email: $email, password: $password) {
    userId
  }
}

// Variables
{
  name: "Jon Doe",
  email: "jon.doe@example.com",
  password: "123456"
}

Example with Axios

Query:

import axios from "axios";
import { query } from "gql-query-builder";

async function getThoughts() {
  try {
    const response = await axios.post(
      "http://api.example.com/graphql",
      query({
        operation: "thoughts",
        fields: ["id", "name", "thought"]
      })
    );

    console.log(response);
  } catch (error) {
    console.log(error);
  }
}

Mutation:

import axios from "axios";
import { mutation } from "gql-query-builder";

async function saveThought() {
  try {
    const response = await axios.post(
      "http://api.example.com/graphql",
      mutation({
        operation: "thoughtCreate",
        variables: {
          name: "Tyrion Lannister",
          thought: "I drink and I know things."
        },
        fields: ["id"]
      })
    );

    console.log(response);
  } catch (error) {
    console.log(error);
  }
}

Showcase

Following projects are using gql-query-builder

Crate - Get monthly subscription of trendy clothes and accessories - GitHub
Fullstack GraphQL Application - GitHub
Would really appreciate if you add your project to this list by sending a PR

Authors

Atul Yadav - GitHub · Twitter
Juho Vepsäläinen - GitHub · Twitter
[YOUR NAME HERE] - Feel free to contribute to the codebase by resolving any open issues, refactoring, adding new features, writing test cases or any other way to make the project better and helpful to the community. Feel free to fork and send pull requests.

Donate

If you liked this project, you can donate to support it ❤️

License

The MIT License (http://www.opensource.org/licenses/mit-license.php)