customize_chart_options

🎨 Customize Chart Appearance with Options

You can tweak colors, legends, tooltips, and more via options passed to your chart helper. Use the library key to hop into the underlying charting library’s full API.

<%= line_chart @users_by_day,
  colors: ["#ff6384", "#36a2eb"],
  points: false,
  xtitle: "Date",
  ytitle: "Count",
  library: {
    title: { display: true, text: "User Sign‑ups Over Time" },
    scales: { yAxes: [{ ticks: { beginAtZero: true } }] }
  }
%>