In the code block below the list, there is an example query with a description of what the query does for each operator. This allows Gatsby to support operators like eq, ne, in, regex and querying nested fields through the _ connector. Gatsby relies on Sift to enable MongoDB-like query syntax for object filtering. You can find a good video tutorial on this in LevelUpTuts Gatsby Tutorial #9: Filters & Sorting with GraphQL. In this query, the filter argument and the ne (not equals) operator are used to show only results that have a title. In this query skip is used to omit the first 3 results. Here totalCount tells you there’s 8 results, but limit is used to show only the first three. There are several ways to reduce the number of results from a query. This section covers the different arguments you can pass in to GraphQL fields. The query will still work and the returned object will reflect the nodes structure. If you’re using Gatsby version 2.2.0 or later, you can remove edges and node from your query and replace it with nodes. In the GraphiQL editor, try using the editor’s autocomplete ( Ctrl + Space) to get extended details from the packageJson nodes. In this query you ask for the total count of plugins in this Gatsby site, along with specific information about each one. Gatsby structures its content as collections of nodes, which are connected to each other with edges. When typing in the query editor you can use Ctrl + Space to see autocomplete options and Ctrl + Enter to run the current query. In the GraphiQL editor, try editing the query to include the description from siteMetadata. Start with the basics, pulling up the site title from your gatsby-config.js’s siteMetadata. You can also open the CodeSandbox version of the example site.įor more background information, read about why Gatsby uses GraphQL and how to use GraphiQL in any Gatsby site. You can run this example locally to experiment and poke around the innards of the site! To get to the GraphiQL editor, go to localhost:8000/_graphql (that’s three underscores). These examples will work on the real schema used on graphql-reference example. We develop our components first in Storybook and it forces the developer to understand where the data is coming from and ask questions about the data model and it's usage.This page will walk you through a series of GraphQL queries, each designed to demonstrate a particular feature of GraphQL. We have been using this pattern at Yolk for a while now and it has grown on everyone. const GITHUB_ISSUES_LIST_QUERY = gql `Ĭonst After this, it passes down the data to its presentational components which need it to render, GithubIssueInfoCard. In the Container Component pattern, we would have a "container" component, GithubIssueListContainer, which handles running the query. Let's say we have a component which renders a list of Github issues showing their title. This can be better achieved by each component, even presentational ones, defining the data they need to render with their own GraphQL fragment. When creating isolated components, they should define the data they need to render. If using GraphQL for your data transport, we want to keep using this pattern but with a new twist. When component count starts to grow and we start to fetch data, we need a new pattern, the Container Component pattern. Another benefit is using showcase apps such as Storybook, these continue the philosophy of isolation and allow for design and prototyping outside the main application. One of the great reasons to use a component-based framework (React, Vue) is that it allows for more isolated component design, which helps with decoupling and unit-testing.
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