In this lesson, we will send a query to obtain the total number of pets registered at the Pet Library.
In this lesson, we send a query to obtain the total number of pets registered at the Pet Library.
When we go to this route https://pet-library.moonhighway.com a tool called GraphQL Playground will pop up in the browser.
GraphQL Playground is an in-browser IDE that lets you send queries to GraphQL endpoints.
With GraphQL, there's only one endpoint, so you need to specify the data that you want by writing a query on the left-hand side of the screen.
query {
totalPets
}When clicking play the data returned is JSON. It matches the shape of the response exactly. All of the feels are the same:
{
"data": {
"totalPets": 25
}
}It's important to understand that GraphQL isn't tied to any specific database or storage engine and is instead backed by your existing code and data.