Mirror: The highly customizable and versatile GraphQL client with which you add on features like normalized caching as you grow.
(examples) Add with-graphcache-pagination (#1593)
* (examples) Add with-graphcache-pagination
authored by
Yanko Valera
and committed by
GitHub
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examples/with-graphcache-pagination/README.md
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examples/with-graphcache-pagination/README.md
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# Integrating with React
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Integrating urql is as simple as:
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1. Install packages [getting started](https://formidable.com/open-source/urql/docs/basics/react-preact/)
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```sh
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yarn add urql graphql
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# or
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npm install --save urql graphql
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```
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2. Install [graphcache](https://formidable.com/open-source/urql/docs/graphcache/)
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```sh
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yarn add @urql/exchange-graphcache
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# or
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npm install --save @urql/exchange-graphcache
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```
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3. Setting up the Client [here](src/App.js)
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4. Execute the Query [here](src/pages/PaginatedNpmSearch.js)
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examples/with-graphcache-pagination/package.json
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examples/with-graphcache-pagination/package.json
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{
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"name": "react-urql-query",
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"version": "1.0.0",
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"private": true,
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"dependencies": {
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"@urql/exchange-graphcache": "^4.0.0",
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"graphql": "^15.5.0",
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"react": "^17.0.2",
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"react-dom": "^17.0.2",
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"urql": "^2.0.2"
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},
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"devDependencies": {
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"react-scripts": "4.0.3"
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},
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"scripts": {
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"start": "react-scripts start",
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"build": "react-scripts build",
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"test": "react-scripts test",
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"eject": "react-scripts eject"
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},
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"eslintConfig": {
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"extends": [
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"react-app",
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"react-app/jest"
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]
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},
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"browserslist": {
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"production": [
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">0.2%",
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"not dead",
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"not op_mini all"
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],
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"development": [
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"last 1 chrome version",
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"last 1 firefox version",
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"last 1 safari version"
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]
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}
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}
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examples/with-graphcache-pagination/src/App.js
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examples/with-graphcache-pagination/src/App.js
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import { createClient, Provider, dedupExchange, fetchExchange } from "urql";
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import { cacheExchange } from '@urql/exchange-graphcache';
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import { relayPagination } from '@urql/exchange-graphcache/extras';
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import PaginatedNpmSearch from "./pages/PaginatedNpmSearch";
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const client = createClient({
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url: "https://trygql.dev/graphql/relay-npm",
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exchanges: [
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dedupExchange,
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cacheExchange({
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resolvers: {
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Query: {
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search: relayPagination(),
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},
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},
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}),
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fetchExchange
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]
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});
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function App() {
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return (
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<Provider value={client}>
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<PaginatedNpmSearch />
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</Provider>
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);
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}
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export default App;
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examples/with-graphcache-pagination/src/index.css
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examples/with-graphcache-pagination/src/index.css
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body {
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margin: 0;
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font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen',
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'Ubuntu', 'Cantarell', 'Fira Sans', 'Droid Sans', 'Helvetica Neue',
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sans-serif;
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-webkit-font-smoothing: antialiased;
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-moz-osx-font-smoothing: grayscale;
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}
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code {
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font-family: source-code-pro, Menlo, Monaco, Consolas, 'Courier New',
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monospace;
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}
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examples/with-graphcache-pagination/src/index.js
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examples/with-graphcache-pagination/src/index.js
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examples/with-graphcache-pagination/src/pages/PaginatedNpmSearch.js
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examples/with-graphcache-pagination/src/pages/PaginatedNpmSearch.js
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import React, { useState } from "react";
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import { gql, useQuery } from "urql";
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const limit = 5;
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const query = "graphql";
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const NPM_SEARCH = gql`
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query Search($query: String!, $first: Int!, $after: String) {
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search(query: $query, first: $first, after: $after) {
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edges {
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node {
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id
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name
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}
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}
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pageInfo {
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hasNextPage
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endCursor
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}
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}
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}
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`;
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const PaginatedNpmSearch = () => {
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const [after, setAfter] = useState("");
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const [result] = useQuery({
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query: NPM_SEARCH,
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variables: { query, first: limit, after }
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});
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const { data, fetching, error } = result;
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const searchResults = data?.search;
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return (
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<div>
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{error && <p>Oh no... {error.message}</p>}
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{fetching && <p>Loading...</p>}
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{searchResults && (
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<>
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{searchResults.edges.map(({ node }) => (
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<div key={node.id}>{node.id}: {node.name}</div>
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))}
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{searchResults.pageInfo.hasNextPage && (
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<button onClick={() => setAfter(searchResults.pageInfo.endCursor)}>
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load more
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</button>
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)}
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</>
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)}
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</div>
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);
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};
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export default PaginatedNpmSearch;