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[react-calendar-heatmap] ReactでGitHubの草(カレンダー)を作る

Last updated at Posted at 2021-03-15

スクリーンショット 2021-03-15 16.45.28.png

react-calendar-heatmapというプラグインを使ってGitHubのcommitカレンダーグラフのようなものを実装しました

環境

OS macOS Big Sur 11.2.3 11.2.3
node v14.8.0
npm 7.5.4
React 17.0.1

Reac.jsの環境構築

  • ここではreact-heatmapという名前でプロジェクトを作成しています
//Create React App
npx create-react-app react-heatmap

react-calendar-heatmapのインストール

yarn add react-calendar-heatmap
npm install react-calendar-heatmap
  • エラーが起きた場合
npm ERR! code ERESOLVE
npm ERR! ERESOLVE unable to resolve dependency tree
npm ERR!
npm ERR! While resolving: react-heatmap@0.1.0
npm ERR! Found: react@17.0.1
npm ERR! node_modules/react
npm ERR!   react@"^17.0.1" from the root project
npm ERR!
npm ERR! Could not resolve dependency:
npm ERR! peer react@"^16.8.0" from react-github-heatmap@1.0.7
npm ERR! node_modules/react-github-heatmap
npm ERR!   react-github-heatmap@"*" from the root project
npm ERR!
npm ERR! Fix the upstream dependency conflict, or retry
npm ERR! this command with --force, or --legacy-peer-deps
npm ERR! to accept an incorrect (and potentially broken) dependency resolution.

※ reactのバージョンが対応していないことが原因

npm i react-calendar-heatmap --legacy-peer-deps
  • npm installする際に、インストールするライブラリのバージョンが、インストール先のプロジェクトのバージョンに対応していない場合、
    オプションで、--legacy-peer-depsを使うことで、半強制的に?installできるようになるようです。

react-tiiltipのインストール

npm install react-tooltip

ソースコード

app.js
import React from "react";
import "./App.css";
import CalendarHeatmap from "react-calendar-heatmap";
import "react-calendar-heatmap/dist/styles.css";
import ReactTooltip from "react-tooltip";

const App = () => {
  return (
    <div className="container">
      <h1>react-calendar-heatmap</h1>
      <div>
        <CalendarHeatmap
          // 表示させる月
          startDate={new Date("2016-07-01")}
          endDate={new Date("2016-12-01")}

          values={[
            { date: "2016-07-03", count: 1 },
            { date: "2016-08-22", count: 2 },
            { date: "2016-07-29", count: 4 },
            { date: '2016-10-01', count: 1 },
            { date: '2016-10-03', count: 2 },
            { date: '2016-10-06', count: 3 },
            { date: '2016-10-10', count: 4 },
            { date: '2016-10-07', count: 1 },
            { date: '2016-09-15', count: 3 },
            // ...and so on
          ]}

          // color
          classForValue={(value) => {
            if (!value) {
              return "color-empty";
            }
            return `color-scale-${value.count}`;
          }}
          tooltipDataAttrs={(value) => {
            if (!value || !value.date) {
              return null;
            }
            // react-tooltipの構成
            return {
              "data-tip": `${value.date} has count: ${
                value.count
              }`,
            };
          }}
        />
      </div>
      <ReactTooltip />
    </div>
  );
};

export default App;
app.css
.react-calendar-heatmap .color-scale-1 { fill: #d6e685; }
.react-calendar-heatmap .color-scale-2 { fill: #8cc665; }
.react-calendar-heatmap .color-scale-3 { fill: #44a340; }
.react-calendar-heatmap .color-scale-4 { fill: #1e6823; }

参考

芝の色分けを細分化

react-calendar-heatmap

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