Using ChartKick with and chart.js I want to add horizontal gridlines. Data range is 100 to 200..
I'd like to have horizontal grid lines every 10 units.
<script src="https://cdnout.com/jquery/"></script>
<script src="https://cdnout.com/Chart.js/Chart.bundle.min.js"></script>
<script src="http://lib.arvancloud.com/ar/chartkick/2.3.0/chartkick.min.js"></script>
<%
begin_tracking = Time.zone.parse('2021-03-24 18:33:00-07')
current_date = Time.now
%>
<%= line_chart DataTable.where(statdate: begin_tracking..current_date).pluck(:statdate, :data_ordinate), min: 100, max: 200, dataset: {borderWidth: 50} %>
I thought dataset: {borderWidth: 50} would do just that, but it's having no visible effect.
Docs quote:
To customize datasets in Chart.js, use:
<%= line_chart data, dataset: {borderWidth: 10} %>
You can pass this option to individual series as well.
Nothing about grid lines in Chart Kick and I wouldn't know how to translate the chart.js to Ruby.
Full details of all of the options are at https://www.chartjs.org/docs/latest/axes/styling.html.
The general form is something like this:
<%= line_chart chart_path(@obj),
code: false,
points: false,
min: 0,
max: 20,
colors: ["#0284C7", "#44403C"],
height: '105px',
width: '175px',
library: {
scales: {
x: {
display: false,
},
y: {
display: true,
font: {
size: 6,
weight: 100
}
}
} %>
the display attributes indicate whether to show the grid or not.