This is a working fork of sequelize's express-example adapted to have additional support for interacting with the database through graphql using graphql-sequelize and express-graphql. It's meant only for illustrative purposes, and done largely for my own edification.

npm install
npm start

This will start the application and create an sqlite database in your app dir. Just open http://localhost:3000.

There's a simple UI from the express-example app that you can use for seeding data in your database. This is helpful for understanding how your GraphQL queries are functioning.

GraphiQL is included through express-graphql, and can be accessed in your browser at http://localhost:3000/graphql.

All of the magic to adapt the sequelize schema to a GraphQL schema takes places in ./graphqlSchema.js.

The only change to the sequelize schema from the out-of-the-box version of express-example is the addition of User.Tasks = User.hasMany(models.Task, {as: 'tasks'}); in models/user.js in order to create the association in a way that graphql-sequelize can digest. This works, but I have a feeling this is not the cleanest approach, and I'd love to hear if you have a better one!

Get all users, list their ids.

{
  users{
    id
  }  
}

Get a user by id, return username, id and title of associated tasks.

{
  user(id:1){
    username
    id
    tasks{
      title
    }
  }  
}

mutation {
  createUser(username: "Doug Funny"){
    id
    username
  }
}