![]() Operation name: For debugging and server-side logging reasons, it’s useful to give your queries meaningful names.While all of them look similar in the language, they have slightly different modes of execution on a spec-compliant GraphQL server. It describes what type of operation you’re trying to do. Operation type: This is either query, mutation, or subscription.Here’s an example that includes all of them: A more detailed query and its parts. You’ll need these new parts if you want to execute something other than a query, or pass dynamic variables. But there are three optional parts to a GraphQL operation that aren’t used there. The query above is somewhat of a shorthand form of GraphQL, which lets you define a query operation in a very concise way. Note that arguments can appear on any field, even fields nested deep in an operation. The arguments can be literal values, as in the query above, or variables, as in the examples below. These are passed into the server-side execution of this field, and affect how it’s resolved. Arguments: A set of key-value pairs attached to a specific field.A field on the root of your operation works the same way as one nested deeper in the query. Note that they are always called “fields”, regardless of how deep in the query they appear. Field: A unit of data you are asking for, which ends up as a field in your JSON response data.This document shows off the main building blocks of GraphQL, which specify the data you’re trying to fetch. What are the different parts of a basic operation? Let’s look at a very simple example of a GraphQL document. Operation: A single query, mutation, or subscription that can be interpreted by a GraphQL execution engine.GraphQL document: A string written in the GraphQL language that defines one or more operations and fragments. ![]() So let’s start by defining some general concepts: The word “request” is pretty coupled to the idea of HTTP and the transport. What do we call a unit of work we’re asking the server to do? It could be a query, a mutation, or a subscription. But there are a lot of things mixed in there. People commonly call everything that hits your GraphQL API server a “query”. First, read through the concepts on the docs, then try using GraphQL with the excellent Learn Apollo tutorial, and finally come back here when you want to go deep into technical language. Note: If you’re trying to learn GraphQL, this isn’t the best place to start. But the spec is pretty long, so in this post I’ll lay out some of the most important concepts and terms, with concrete examples, so that you can be an expert in talking about GraphQL. Well, it turns out names for almost every concept in the GraphQL language are right there in the GraphQL specification. But how should you talk about the query language and the core technology itself? One of the best parts of GraphQL is that it gives you a great common language with your team to talk about the data available in your API. There are now a lot of great conversations happening around developments in the technology and new tools being built every day. ![]() ReadInline uses Relay's readInlineData under the hood.GraphQL is just entering the mainstream as a new standard for data fetching. Can be used outside of React's render phase. SomeFragment.readInline is a function that takes an object containing a fragment reference for that particular fragment, and returns the fragment data. Your fragment needs to be annotated with for this function to appear. Use uses Relay's useFragment under the hood, which you can read more about here. e is a React hook that takes an object containing a fragment reference for that particular fragment, and returns the fragment data. %relay() is expanded to a module containing the following functions: use With that in mind, Let's jump in to mutations. You pass that fragmentReferences prop to the respective fragment's use hooks. This contains references for all fragments that have been spread on that object.
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