Rails Chartkick：column_chart 中的日期格式

Question

我使用Chartkick Rails中，它看起來像column_chart日期格式比不同line_chart日期格式。 我已經檢查了我輸入的數據，並且圖表之間的數據是相同的。

折線圖有一個 x 軸（我想要的），看起來像： Nov 2016, Jan 2017, Mar 2017

柱狀圖： 2016-11-01, 2016-12-01, 2017-01-01...

<%= line_chart [
    {name: "Posts", data: @posts_over_time },
    {name: "Comments", data: @comments_over_time }
    ],
    xtitle: "Date",
    ytitle: "Engagement"
%>

<%= column_chart [
    {name: "Accepted", data: @number_charges_accepted },
    {name: "Declined", data: @number_charges_declined }
    ],
    stacked: true,
    xtitle: "Date",
    ytitle: "Transactions",
    # Additions I've tried:
    library: {
    format: 'MM/YY'
    },
    discrete: true
%>

Answer 1

根據這里的建議讓它工作： https : //github.com/ankane/chartkick/issues/352

@number_charges_declined = PastTransaction.where(project_id: @project.id).where(status: 'failed').group_by_month(:created_at, last: 6).count
@number_charges_accepted = PastTransaction.where(project_id: @project.id).where(status: 'successful').group_by_month(:created_at, last: 6).count
# Format dates for column_chart
@number_charges_declined = @number_charges_declined.transform_keys.with_index{ |key, i| if i % 2 == 0 then key.strftime("%b %Y") else " "*i end }
@number_charges_accepted = @number_charges_accepted.transform_keys.with_index{ |key, i| if i % 2 == 0 then key.strftime("%b %Y") else " "*i end }