How to perform multiple queries with Apollo graphql HOC? Asking for help, clarification, or responding to other answers. What's the verdicts on hub-less circle bicycle wheels? We now have all of the pieces in place for accessing our FaunaDB database both locally and a hosted Heroku environment. What crimes have been committed or attempted in space? But this question is actually too simplistic, because there are also two other ways you can store data for use in a component: static and this.
In a “real” application, you would probably have a separate database and separate keys for each environment. Modern IDEs are magic. Let’s give these queries and mutations a spin to familiarize ourselves with them.
React Apollo Client useQuery Hook gql Uncaught TypeError:(…) is not a function. React Hooks must be called in the exact same order in every component render. Assuming you have create-react-app installed, the commands to create a new application are: After which you should be able to head to http://localhost:3000 and see the generated homepage for the application. With the advent of React and Redux, a common question has emerged:. I'm struggling to understand how to best organise my code to set initial useState() in React, while using GraphQL and Apollo to bring in the data. GraphQL is a way to send data over HTTP and is often presented as a revolutionary new way to think about APIs and seen as the successor of REST (Representational State Transfer). Instead we’ll generate an application key which has permission to create, read, update, and delete items. For the sake of simplicity in this application, this will be done with a secret key that we can add as an environment variable to our React application. Here is the code for an AddItem component, which uses a bare bones html form to call the createItem mutation: After adding a reference to AddItem in our App component, we can verify that adding items works as expected. Sturdy and "maintenance-free"? You can find the full source code here.
Why thin metal foil does not break like a metal stick? In order for our React application to interact with our GraphQL API, we need some sort of GraphQL client library. Setting up a React application has become very easy in the past few years, but setting up a backend with a GraphQL API? rev 2020.11.11.37991, Stack Overflow works best with JavaScript enabled, Where developers & technologists share private knowledge with coworkers, Programming & related technical career opportunities, Recruit tech talent & build your employer brand, Reach developers & technologists worldwide, If you need to use the data to initialize state, then use, How to useState and useQuery in Apollo/GraphQL and React? ShopTalk is a podcast all about front-end web design and development. Again, you can see the full commit in the demo app for a recap of this step. A more declarative way when using React however is to use new Apollo’s render prop API to manage your GraphQL data just using components. And since we’re using Heroku, deploying is a snap: When you run heroku open though, you’ll see that the page is blank. According to rules of hook you should not call useState after your component returns something. Here’s what our updated ItemList component looks like after adding this mutation: Reloading our app and adding another item should result in a page that looks like this: If you click on the “Remove” button for any item, the DELETE_ITEM mutation is fired and the entire list of items is fired upon completion as specified per the refetchQuery option. Pretty cool right? While I certainly wouldn’t recommend this for a production-grade application, I think it does at least demonstrate any added styling in the most straightforward manner within a small demo. Required fields are marked *. This utility is built on top of ra-data-graphql and is a custom data provider for the current Hasura graphql API format.. Although I haven’t explored its more advanced features yet, if it’s anything like my first impression then the prospects and implications of using FaunaDB are quite exciting.
The same thing happens if I clone your git repository. This step is important because our data returned from our GraphQL API is in the shape we requested in it from our GET_TABLE query, and needs to be reshaped in order to properly fit our application. Frontend Masters is the best place to get it. Would the Millennium Falcon have been carried along on the hyperspace jump if it stayed attached to the Star Destroyer? This is the best way to post any code, inline like `
If you would prefer to use the command line rather than Heroku’s web interface, you can use the following command and replace the secret with your key instead: Important: as noted in the Heroku docs, you need to trigger a deploy in order for this environment variable to apply in your app: After running this last command, your Heroku-hosted app should appear and load the items from your database. site design / logo © 2020 Stack Exchange Inc; user contributions licensed under cc by-sa.