46 lines
1.1 KiB
Markdown
46 lines
1.1 KiB
Markdown
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---
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title: Using GraphQL with Node.js
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categories:
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- Databases
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tags: [graph-ql, node-js]
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---
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# Using GraphQL with Node.js
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## Create a basic Express server
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First we create a basic server in Node using Express:
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```js
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import express from "express";
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app.get("/", (req, res) => {
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res.send("Graph QL test project");
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});
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app.listen(8080, () =>
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console.log("Running server on port localhost:8080/graphql")
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);
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```
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## Add GraphQL as middlewear
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Next we introduce GraphQL as a piece of Node.js [middlewear](/Programming_Languages/Node/Architecture/Middleware.md), with the `app.use()` method.
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```js
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import { graphqlHTTP } from "express-graphql";
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app.use(
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"/graphql",
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graphqlHTTP({
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schema: schema,
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rootValue: resolvers,
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graphiql: true,
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})
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);
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```
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- `schema` is a reference to our GraphQL schema - the structure of the fields that define our server.
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- `rootValue` is a reference to our resolvers.
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- `graphiql` is the GUI tool that will be served from the GraphQL endpoint at `localhost:8080/graphql`. This tool enables us to interrogate our data using the defined schema and see what data we would get back from frontend queries.
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