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Building a GraphQL Endpoint with Deno

Updating our Schema

Explore how to update a GraphQL schema by adding User types, defining queries like getUser, and creating mutations such as addUser, all integrated with PostgreSQL in a Deno application. Understand how to connect to a Postgres database, define resolvers, and test the endpoint to manage user data effectively.

We'll cover the following...

User type and input

We’ll use a schema with only the User type. Let’s start by adding this type and then creating our resolvers. We’ll add the definition of the following types:

TypeScript 3.3.4
const types = gql`
    type User {
        id: String
        firstname: String
        lastname: String
    }
    input UserInput {
        firstname: String
        lastname: String
    }
`;

User queries

In this section, we’ll define our queries. In particular, we’ll define the getUser query that returns a given user from their associated id. As the first step, let’s add the query to our types:

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