If there is a recursive fragment you will receive a "Cannot spread fragment within itself" error. Post and User would be recursive otherwise. Notice that we generate _NoNesting fragments, which do not include relations. There are three types of fragments outputted by graphql-cli-generate-fragments. ✔ Fragments for project app written to src/generated/įragments Usage and Examples Generated Fragments Automating graphql generate-fragmentsĪfter you have set up fragment generation for all projects, you can simply run graphql generate-fragments without any parameters to process all projects: $ graphql prepare This will also save the configuration in your. ✔ Fragments for project database written to src/generated/
GRAPHQL NESTED FRAGMENTS GENERATOR
The first time you use fragment generation in your project, you need to provide an output folder for your fragments, and the generator you want to use: $ graphql generate-fragments -p database -o src/generated -g graphql -save v, -version Show version number Ĭreates graphql fragments containing the fields for each type in the supplied schema. generator, -g Generate to 'js' or 'graphq' Npm i -g graphql-cli graphql-cli-generate-fragments Usage graphql generate-fragments To use the GraphQL Playground in your Gatsby project, edit the develop script in the package.Graphql-cli-generate-fragments Installation Multiple Tabs just like you'd have in an IDE.Interactive, multi-column schema documentation.The GraphQL Playground also adds additional features like: GraphQL Playground uses components of GraphiQL under the hood but is essentially a more powerful GraphQL IDE that enables better development workflows. It allows you to interact with all the data, schemas added by additional Gatsby plugins. However, there's an alternative to GraphiQL, and that's the GraphQL Playground by Prisma. Whenever you run your Gatsby site in development mode, it also launches GraphiQL, an in-browser IDE, to explore your site's data and schema at localhost:8000/_graphql: Included in the query is the author property which uses the AuthorInfo fragment, and we're also type-checking the content of author in the Prop TypeScript interface. In a way it's similar to exporting a function from a helper file and then reusing that function in multiple components: Luckily there's a feature in GraphQL called fragments that allow you to create a set of fields and then include them in queries where they'd be used.įragments also help to convert complex queries into much smaller and modular queries. When using GraphQL in Gatsby, it's most likely you'll be in a scenario where you've used a particular query a couple of times across multiple components. Static queries do not have this feature.Īnother difference between them is that static queries can be used anywhere in any component but page queries can only be used on pages which are used as component property in the createPage function. The main difference between both methods is that page queries have access to the page context, which is defined during the createPage and this essentially means that page queries can accept GraphQL variables. This method also provides you with more options when creating these pages such as customizing the page's slug. However there's another method to creating pages, and that's using the createPage action in conjunction with the createPages API to programmatically create pages.
Create Gatsby Pages from GraphQL Queryīy default, pages/routes in Gatsby are created by creating a new file in the src/pages folder i.e creating an about.js file means creating a page at /about. In this article, I'll share some useful tips for when using GraphQL in a Gatsby project. If you are interested, you can read more about why Gatsby uses GraphQL. Standardized: It's a performant data querying language for the often complex/nested data dependencies.Static Build: Perform data transformations at build time within GraphQL queries.Specificity: Request only the data needed and not whatever is returned by the API.Gatsby uses GraphQL because it provides the following: GraphQL is a query language for APIs that provides a complete and understandable description of the data in your API, gives clients the power to ask for exactly what they need and nothing more. One of the many advantages of using Gatsby is that it allows accessing data through a query language called GraphQL. It allows you to build your website and apps using React and then generates HTML, CSS, and JS when you build for production. Gatsby is an open-source framework based on React that helps build websites and apps.
0 kommentar(er)
