GRAPHQL NESTED FRAGMENTS HOW TO
GRAPHQL NESTED FRAGMENTS SOFTWARE
GRAPHQL NESTED FRAGMENTS CODE
GRAPHQL NESTED FRAGMENTS SERIES

lt: short for less than, must be less than given value.

gte: short for greater than or equal, must be greater than or equal to given value.

gt: short for greater than, must be greater than given value.

nin: short for not in array, must NOT be an element of the array.

in: short for in array, must be an element of the array.

glob: short for global, allows to use wildcard * which acts as a placeholder for any non-empty string.

regex: short for regular expression, must match the given pattern.

ne: short for not equal, must be different from the given data.

eq: short for equal, must match the given data exactly.

GRAPHQL NESTED FRAGMENTS CODE

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.

GRAPHQL NESTED FRAGMENTS HOW TO

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.

GRAPHQL NESTED FRAGMENTS SERIES

Let’s say you are building an app that displays a list of posts in a feed.This page will walk you through a series of GraphQL queries, each designed to demonstrate a particular feature of GraphQL. Using aliases, you can combine multiple fetches on the same object in a single GraphQL query. Let’s take a look at two different examples. There are several scenarios where you may want to change the name of the field where you receive query results. In this situation and others, aliases can help you optimize and improve the organization of your queries. Many developers would be inclined to write separate queries and execute them in independent API calls. For example, let’s say you are trying to fetch the same data by applying various filters. Aliases don’t change the original schema, instead, they manipulate the structure of the query result that is fetched from your database, displaying it according to your specifications.Īliases come in handy when you want to improve the efficiency of your queries. Let’s get started! What are GraphQL aliases?Īliases allow us to rename the data that is returned in a query’s results. We’ll look into several scenarios and expand on this concept with a relevant example. In this tutorial, we’ll cover what an alias is, how it works, and when we should use it. In these situations, we can use GraphQL aliases to improve our queries. Or, maybe you received two query results in the same server response, causing the field names to clash. If you’ve used GraphQL for your production application, you may have encountered a scenario where you needed your custom queries to return custom field names.

GRAPHQL NESTED FRAGMENTS SOFTWARE

Kumar Harsh Follow Technical writer and software developer based in India.

Graphql nested fragments