GraphQL Setup with ExpressJS

PHOTO

Fri Oct 09 2020 23:22:52 GMT+0000 (Coordinated Universal Time)

Saved by @robertjbass #nodejs #javascript #graphql #express

const express = require('express')
const { graphqlHTTP } = require("express-graphql");
const {
  GraphQLSchema,
  GraphQLObjectType,
  GraphQLString,
  GraphQLList,
  GraphQLInt,
  GraphQLNonNull
} = require('graphql')
const app = express()
const port = 3000

// Sample Data
const authors = [
	{ id: 1, name: 'Dan Brown' },
	{ id: 2, name: 'J. R. R. Tolkien' },
	{ id: 3, name: 'Brent Weeks' }
]

const books = [
	{ id: 1, name: 'The Lost Symbol', authorId: 1 },
	{ id: 2, name: 'Angels and Demons', authorId: 1 },
	{ id: 3, name: 'The Davinci Code', authorId: 1 },
	{ id: 4, name: 'The Fellowship of the Ring', authorId: 2 },
	{ id: 5, name: 'The Two Towers', authorId: 2 },
	{ id: 6, name: 'The Return of the King', authorId: 2 },
	{ id: 7, name: 'The Way of Shadows', authorId: 3 },
	{ id: 8, name: 'Beyond the Shadows', authorId: 3 }
]

const BookType = new GraphQLObjectType({
  name: 'Book',
  description: 'This represents a book written by an author',
  fields: () => ({
    id: { type: GraphQLNonNull(GraphQLInt) },
    name: { type: GraphQLNonNull(GraphQLString) },
    authorId: { type: GraphQLNonNull(GraphQLInt) },
    author: {
      type: AuthorType, // AuthorType is defined below the same way that BookType is defined above
      resolve: (book) => {
        return authors.find(author => author.id === book.authorId)
      }
    }
  })
})

const AuthorType = new GraphQLObjectType({
  name: 'Author',
  description: 'This represents the author of a book',
  fields: () => ({
    id: { type: GraphQLNonNull(GraphQLInt) },
    name: { type: GraphQLNonNull(GraphQLString) }
  })
})

const RootQueryType = new GraphQLObjectType({
  name: 'Query',
  description: 'Root Query',
  fields: () => ({
    books: {
      type: new GraphQLList(BookType),
      description: "List of books",
      resolve: () => books
    }
  })
})

const schema = new GraphQLSchema({
  query: RootQueryType
})



app.use('/graphql', graphqlHTTP({
  schema: schema,
  graphiql: true
}))


app.get('/', (req, res) => {
  res.send(`<a href="http://localhost:${port}/graphql">GraphiQL</a>`)
})

// QUERY:
// 
// {
// 	books {
//     id
//   	name
//     author {
//       name
//     }
// 	}
// }

// RESULT
// 
// {
//   "data": {
//     "books": [
//       {
//         "id": 1,
//         "name": "The Lost Symbol",
//         "author": {
//           "name": "Dan Brown"
//         }
//       },
//       {
//         "id": 2,
//         "name": "Angels and Demons",
//         "author": {
//           "name": "Dan Brown"
//         }
//       }, //...
//     ]
//   }
// }

app.listen(port, () => {
  console.log(`App listening on http://localhost:${port}`)
});

COPY

Express Server with VanillaJS

https://github.com/716green/graphql-express-setup/blob/main/server.js

Save snippets that work from anywhere online with our extensions

Comments

More like this

#html #javascript #nodejs

How to Save HTML Form Data in JSON - Express

<form action="/new" method="post">
 
  <input name="title" type="text">
  <input name="description" type="text">
  <button type="submit">Submit Form</button>
 
</form>

> More steps

#javascript

Get URL and URL Parts in JavaScript

var newURL = window.location.protocol + "//" + window.location.host + "/" + window.location.pathname + window.location.search

#javascript

Add event listener to multiple buttons with the same class

    btns = document.getElementsByClassName("saveBtn");
    for (var i = 0; i < btns.length; i++) {
        btns[i].addEventListener("click", function () {
			//Add function here
        });
    }

#javascript

Replace Textarea with Codemirror editor

<link rel="stylesheet" type="text/css" href="plugin/codemirror/lib/codemirror.css">

<body>
	<textarea class="codemirror-textarea"></textarea>
</body>

<script>

$(document).ready(function(){
    var codeText = $(".codemirror-textarea")[0];
    var editor = CodeMirror.fromTextArea(codeText, {
        lineNumbers : true
    });
});

</script>

<script type="text/javascript" src="plugin/codemirror/lib/codemirror.js"></script>

#javascript #nodejs #commandline

HTTPS Redirect in Nodejs

npm install heroku-ssl-redirect

> More steps

#javascript #nodejs

Save to MongoDB without Duplicates Using Mongoose

var mongoose = require('mongoose');
var Schema = mongoose.Schema;

const exampleSchema = new Schema({
    title: { type: String , required: true},
    content: [{type: String}]
});


var Example = mongoose.model('Example', exampleSchema);
module.exports = Example;

> More steps

#html #javascript #jsfunctions #dom #dommanipulation

getAttribute() - how to get the value of any attribute of HTML element

<html>

<input id="contact" name="address">

<script>

    var x = document.getElementById("contact").getAttribute('name');

</script>

</html>

#javascript

Full Stack Developer

function full_stack_developer() {
    full_stack_developer();
}

#javascript

3 Ways To Detect Selenium Bots Using Javascript - CodingTutz

if (navigator.webdriver) {
    document.body.innerHTML = "This is a Bot";
}

#javascript #promises #howto

How to Get the Domain From A URL Using Javascript

var url = "http://scratch99.com/web-development/javascript/";
var urlParts = url.replace('http://','').replace('https://','').split(/[/?#]/);
var domain = urlParts[0];

#javascript #javascript #functions #parameters

Required Parameters for Functions in JavaScript

 const isRequired = () => { throw new Error('param is required'); };

const hello = (name = isRequired()) => { console.log(`hello ${name}`) };

// These will throw errors
hello();
hello(undefined);

// These will not
hello(null);
hello('David');
The idea here is that it uses default parameters, like how the b parameter here has a default if you don’t send it anything:
function multiply(a, b = 1) {
  return a * b;
}

#javascript

Mapping an Object

const object1 = {
  a: 'somestring',
  b: 42
};

for (let [key, value] of Object.entries(object1)) {
  console.log(`${key}: ${value}`);
}

#javascript

Copy Text to Clipboard with Line Breaks

function copyToClipboard(){

    var codeToBeCopied = document.getElementById('code-snippet').innerText;
    var emptyArea = document.createElement('TEXTAREA');
    emptyArea.innerHTML = codeToBeCopied;
    const parentElement = document.getElementById('post-title');
    parentElement.appendChild(emptyArea);

    emptyArea.select();
    document.execCommand('copy');

    parentElement.removeChild(emptyArea);
    M.toast({html: 'Code copied to clipboard'})

    }

#javascript

How to store fetch response in javascript variable - Stack Overflow

async function fun() {
  return fetch('https://jsonplaceholder.typicode.com/todos/1').then(res => res.json());
}

const data  = await fun();

#javascript #jquery

jQuery.post() - AJAX for post requests

$.ajax({
  type: "POST",
  url: url,
  data: data,
  success: success,
  dataType: dataType
});

GraphQL Setup with ExpressJS

Save snippets that work from anywhere online with our extensions

Comments

More like this

Browse more snippets >>

Embed code snippet