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Chartkick is a Ruby gem that makes it easy to generate beautiful charts in Rails and other Ruby applications with minimal code. It provides a high-level API where developers can use simple helpers like line_chart, pie_chart, or column_chart and pass in data arrays or ActiveRecord queries. Under the hood, it works with popular charting libraries such as Google Charts, Chart.js, and Highcharts, but hides their verbose JavaScript APIs behind a clean Ruby interface. It also handles things like automatic labels, legends, colors, and responsiveness without requiring you to manually configure chart options. Because of its integration with ActiveRecord, developers can quickly visualize trends in their application’s data with minimal transformation. Chartkick is especially valued in dashboards, reporting tools, and admin panels where quick, maintainable visualization is needed without heavy front-end development.
Features
- One-line view helpers (e.g. line_chart, pie_chart) to generate charts from Ruby data or JSON endpoints
- Supports many chart types: line, area, bar, pie, scatter, column, geo charts, timeline etc.
- Works with several JavaScript build systems / module bundlers (Importmap, Webpack, esbuild etc.)
- Customizable options: sizes, colors, axis min/max, discrete vs continuous axes, labels, titles etc.
- Adapter support for different JavaScript charting libraries (Chart.js, Google Charts, Highcharts)
- Live updates / dynamic data loading via JSON endpoints or URL data sources; charts can be refreshed etc.
Project Samples
