Question

我有一个嵌套的对象格式，其中没有分配键的值，格式如下所示：

{
  "data": {
    "2019": {
      "January": {
        "complaintRaised": 9,
        "totalPending": 4,
        "totalClosed": 0,
        "resolvedPercent": 0
      }
    },
    "2018": {
      "May": {
        "complaintRaised": 9,
        "totalPending": 4,
        "totalClosed": 0,
        "resolvedPercent": 0
      }
    }

  },

}

我需要使用键

将其转换为单个数组

response.data: [{
    key: "2019"
    "complaintRaised": 9,
    "totalPending": 4,
    "totalClosed": 0,
    "resolvedPercent": 0
    year: "2019-January"
  },
  {
    key: "2018"
    "complaintRaised": 9,
    "totalPending": 4,
    "totalClosed": 0,
    "resolvedPercent": 0
    year: "2018-May"
  }
]

分配值。

Answer 1

类似的东西可以解决这个问题

function render({data}) {
const entries :any[] = Object['entries'](data);

const result = entries.map(yearData => {
  let key = yearData[0];
  let month = Object.keys(yearData[1])[0];
  let monthData = yearData[1][month];

  return {
    key,
    ...monthData,
    year : `${key}-${month}`
  }

})
return result;
}

stackblitz demo

已更新：

以防我们有很多个月

function render({ data }) {
  const entries: any[] = Object['entries'](data);
  return entries.map(([key, data]) =>
    Object.keys(data).map(month => ({
      key,
      ...data[month],
      year: `${key}-${month}`
    }))
  ).reduce((acc: any[], next: any[]) => acc.concat(next), [])
}

stackblitz demo

Answer 2

如果同一年有一个月以上，则第一个答案将不起作用，如以下示例所示。该代码将处理所有月份。

forecast_custom <- function(selected_fruit) {
  df_sub <- subset(df, fruit == selected_fruit)
  ts_sub <- ts(df_sub$sales)

  data.frame(
    fruit = selected_fruit,
    month = 13:24,
    forecasted_sales = as.numeric(forecast(ets(ts_sub))$fitted)
  )
}

> map_df(unique(df$fruit), forecast_custom)
#>         fruit month forecasted_sales
#> 1       Apple    13        4781.3679
#> 2       Apple    14        4781.3330
#> 3       Apple    15        4780.8736
#> 4       Apple    16        4781.2790
#> 5       Apple    17        4781.3523

将数组转换为单个数组，然后将键分配给对象值

2 个答案: