I want to draw a pie chart for an array with chartkick but I have seen in the website of chartkick examples of charts to a column in a table like <%= pie_chart Yogurt.group(:flavor).count %> . There is a way to draw just an array using chartkick.

CodePudding user response：

Check out this part of their website https://chartkick.com/#data -

<%= pie_chart [["Football", 10], ["Basketball", 5]] %>

If you are using a database then do this -

Define it in the controller -

def index
  @piechartdata = Sport.pluck(:name, :id)
end

That will give you exactly this format - [["Football", 10], ["Basketball", 5]]

Then in your view -

<%= pie_chart @piechartdata %>