Introduction to GraphQL and Apollo Client with React


Course Number: SCRPT-182

Duration: 3 days (19.5 hours)

Format: Live, hands-on

GraphQL Training Overview

GraphQL is a data query language that is rapidly becoming a popular alternative to REST. In this Introduction to GraphQL and Apollo Client with React training,  attendees master writing GraphQL queries and mutations, as well as how to use the Apollo Client. 

Location and Pricing

Accelebrate offers instructor-led enterprise training for groups of 3 or more online or at your site. Most Accelebrate classes can be flexibly scheduled for your group, including delivery in half-day segments across a week or set of weeks. To receive a customized proposal and price quote for private corporate training on-site or online, please contact us.

In addition, some Web Development courses are available as live, online classes for individuals.

Objectives

  • Understand the role and purpose of GraphQL Types, and how those types are used together
  • Write GraphQL queries and mutations, as well as leverage introspection to determine the schema of the server
  • Execute GraphQL queries from JavaScript code using the fetch API
  • Utilize the Apollo Client library to execute GraphQL queries and mutations

Prerequisites

Students should have extensive experience in developing React components and extensive coding experience with Modern JavaScript (ES2017 and later).

Outline

Expand All | Collapse All

Introduction
  • What is GraphQL?
  • GraphQL compared to REST Services
  • Apollo compared to Flux, Redux, and Relay
  • Benefits of GraphQL
  • Benefits of Apollo Client, Server and Engine
GraphQL Types and Server Configuration
  • Scheme, Object, Scalar, & List Types
  • Interface Types
  • Understanding Fields, Arguments and Resolve
GraphQL Queries
  • Using the GraphQL web-based client for making queries and exploring documentation
  • Querying connected nodes on the graph, and exploring how that works.
  • Passing arguments into queries.
  • Renaming a field with aliasing.
  • Breaking a large query into fragments.
  • Nesting many fragments.
  • Exploring Apollo GraphQL Client Requests with Tooling
GraphQL Mutations
  • Explore Mutation Queries and Input Types
  • Execute Mutation Queries with Variables
  • Structuring Mutation Query Results
  • Configuring Mutations with Apollo Client
  • Store Updates, Optimistic Responses
  • Handling Error from Failed Mutations
Additional GraphQL Topics
  • Enum, Union, Interface Types
  • Inline Fragments
  • Directives
  • Introspection Queries
  • Pre-fetching Data
  • Subscriptions
Connecting to React
  • Using the web browser fetch API to connect to a GraphQL server
  • Using Google Chrome extensions to examine GraphQL queries
  • Migrate an existing React application from REST Services to GraphQL
Connecting to React using Apollo Client
  • Setting up the Apollo Networking Environment
  • Using the Apollo Provider to connect GraphQL to React
  • Co-locating the GraphQL Query with the React component
  • Containers with GraphQL function and decorator
  • Container Config API
  • Container with Query API
Conclusion

Training Materials:

All GraphQL students receive comprehensive courseware.

Software Requirements:

  • JavaScript-aware IDE such as WebStorm or Visual Studio Code; a JavaScript-aware text editor would also suffice
  • Docker
  • Related lab files that Accelebrate provides


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