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nextjs-8-jwt

Boilerplate to get started with Next.js 8 Serverless Mode and JWT Authentication, Hasura GraphQL engine as CMS and postgres as database.

Deploy Hasura

  • Deploy Postgres and GraphQL Engine on Heroku:

    Deploy to heroku

    Please checkout our docs for other deployment methods

  • Get the Heroku app URL (say my-app.herokuapp.com)

Create the initial tables

  1. Add your heroku URL in hasura/config.yaml
endpoint: https://<hge-heroku-url>
  1. Run hasura migrate apply and hasura metadata apply inside hasura directory to create the required tables and permissions for the app.

Deploy JWT Server

  • Deploy the JWT server by following the instructions here Note Skip the knex migrate step as the required tables have already been created in the above step.

Ensure to configure Hasura GraphQL Engine with the environment variables HASURA_GRAPHQL_ADMIN_SECRET and HASURA_GRAPHQL_JWT_SECRET as given in the above repo.

Run the Next.js App

  • Clone this repo:

    git clone https://github.com/hasura/graphql-engine
    cd graphql-engine/community/sample-apps/nextjs-8-serverless/with-apollo-jwt
  • Install npm modules:

    cd app 
    yarn install
  • Open lib/init-apollo.js and configure Hasura's GraphQL Endpoint as follows:

    const httpLink = new HttpLink({
        uri: 'https://myapp.herokuapp.com/v1alpha1/graphql', // Server URL (must be absolute)
        credentials: 'same-origin' // Additional fetch() options like `credentials` or `headers`
    })

Replace the uri with your own Hasura GraphQL endpoint.

We are using an Auth Middleware to inject the Authorization headers into the GraphQL requests.

  const authMiddleware = new ApolloLink((operation, forward) => {
    // add the authorization to the headers
    operation.setContext({
      headers: {
        authorization: getToken(),
      }
  })

Let's also configure the JWT server URL used for authentication.

Open server.js and update the following appropriately.

const target = 'http://localhost:8080' 

In this example, we integrate Apollo with Next by wrapping our pages/_app.js inside a higher-order component HOC. Using the HOC pattern we're able to pass down a central store of query result data created by Apollo into our React component hierarchy defined inside each page of our Next application.

On initial page load, while on the server and inside getInitialProps, we invoke the Apollo method, getDataFromTree. This method returns a promise; at the point in which the promise resolves, our Apollo Client store is completely initialized.

  • We have defined the graphql query in components/ArticleList.js.

    query {
      article {
        id
        title
      }
    }
  • Run the app:

    yarn run build
    yarn run dev
  • Test the app Visit http://localhost:3000 to view the app

Serverless Mode

With Next.js 8, each page in the pages directory becomes a serverless lambda. To enable serverless mode, we add the serverless build target in next.config.js.

module.exports = {
  target: "serverless",
};

That's it! Now build the serverless app by running the following command:

yarn run build

In the .next folder, you will see a serverless folder generated after the build. Inside that there is a pages folder, which will have outputs of lambda per page.

pages/index.js => .next/serverless/pages/index.js
pages/login.js => .next/serverless/pages/login.js
pages/signup.js => .next/serverless/pages/signup.js
pages/articles.js => .next/serverless/pages/articles.js

Deploy to now.sh

Deploy it to the cloud with now (download):

npm install -g now
now

Note: Older versions of now-cli doesn't support serverless mode. Once the deployment is successful, you will be able to navigate to pages / and /login, /signup with each one internally being a lambda function which now manages.

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