的Javascript组和由多个属性阵列递归以特定的顺序(Javascript group and

我建立一个网格组件，将允许用户执行多行分组。

我工作的原始数据是与股票的物品，例如：

let stock = [
    { order: "200", type: "production", qty: 200, item: "IT282" },
    { order: "200", type: "production", qty: 90, item: "IT283" },
    { order: "200", type: "customer", qty: 80, item: "IT102" },
    { order: "200", type: "production", qty: 110, item: "IT283" },
    { order: "200", type: "customer", qty: 130, item: "IT102" },
    { order: "200", type: "production", qty: 45, item: "IT233" },
    { order: "200", type: "stock", qty: 30, item: "IT282" },
    { order: "210", type: "production", qty: 300, item: "IT282" },
    { order: "210", type: "production", qty: 190, item: "IT283" },
    { order: "210", type: "customer", qty: 180, item: "IT102" },
    { order: "210", type: "production", qty: 210, item: "IT283" },
    { order: "210", type: "customer", qty: 230, item: "IT102" },
    { order: "210", type: "production", qty: 145, item: "IT233" },
    { order: "210", type: "stock", qty: 130, item: "IT282" }
];

我需要做到的是要能够使用该数据的多个字段以不同的顺序，像下面的结果组：

let result = groupBy(stock, ["order"]);

[
    {
        field: "order",
        value: "200",
        rows: [
            { order: "200", type: "production", qty: 200, item: "IT282" },
            { order: "200", type: "production", qty: 90, item: "IT283" },
            { order: "200", type: "customer", qty: 80, item: "IT102" },
            { order: "200", type: "production", qty: 110, item: "IT283" },
            { order: "200", type: "customer", qty: 130, item: "IT102" },
            { order: "200", type: "production", qty: 45, item: "IT233" },
            { order: "200", type: "stock", qty: 30, item: "IT282" }
        ]
    },
    {
        field: "order",
        value: "210",
        rows: [
            { order: "210", type: "production", qty: 300, item: "IT282" },
            { order: "210", type: "production", qty: 190, item: "IT283" },
            { order: "210", type: "customer", qty: 180, item: "IT102" },
            { order: "210", type: "production", qty: 210, item: "IT283" },
            { order: "210", type: "customer", qty: 230, item: "IT102" },
            { order: "210", type: "production", qty: 145, item: "IT233" },
            { order: "210", type: "stock", qty: 130, item: "IT282" }
        ]
    }
];

let result = groupBy(stock, ["item"]);

[
    {
        field: "item",
        value: "IT282",
        rows: [
            { order: "200", type: "production", qty: 200, item: "IT282" },
            { order: "200", type: "stock", qty: 30, item: "IT282" },
            { order: "210", type: "production", qty: 300, item: "IT282" },
            { order: "210", type: "stock", qty: 130, item: "IT282" }
        ]
    },
    {
        field: "item",
        value: "IT283",
        rows: [
            { order: "200", type: "production", qty: 90, item: "IT283" },
            { order: "200", type: "production", qty: 110, item: "IT283" },
            { order: "210", type: "production", qty: 190, item: "IT283" },
            { order: "210", type: "production", qty: 210, item: "IT283" }
        ]
    },
    {
        field: "item",
        value: "IT102",
        rows: [
            { order: "200", type: "customer", qty: 80, item: "IT102" },
            { order: "200", type: "customer", qty: 130, item: "IT102" },
            { order: "210", type: "customer", qty: 180, item: "IT102" },
            { order: "210", type: "customer", qty: 230, item: "IT102" }
        ]
    },
    {
        field: "item",
        value: "IT233",
        rows: [
            { order: "200", type: "production", qty: 45, item: "IT233" },
            { order: "210", type: "production", qty: 145, item: "IT233" }
        ]
    }
];

let result = groupBy(stock, ["order", "item"]);

[
    {
        field: "order",
        value: "200",
        rows: [
            {
                field: "item",
                value: "IT282",
                rows: [
                    {
                        order: "200",
                        type: "production",
                        qty: 200,
                        item: "IT282"
                    },
                    { order: "200", type: "stock", qty: 30, item: "IT282" },
                    {
                        order: "210",
                        type: "production",
                        qty: 300,
                        item: "IT282"
                    }
                ]
            },
            {
                field: "item",
                value: "IT283",
                rows: [
                    {
                        order: "200",
                        type: "production",
                        qty: 90,
                        item: "IT283"
                    },
                    {
                        order: "200",
                        type: "production",
                        qty: 110,
                        item: "IT283"
                    }
                ]
            },
            {
                field: "item",
                value: "IT102",
                rows: [
                    { order: "200", type: "customer", qty: 80, item: "IT102" },
                    { order: "200", type: "customer", qty: 130, item: "IT102" }
                ]
            },
            {
                field: "item",
                value: "IT233",
                rows: [
                    {
                        order: "200",
                        type: "production",
                        qty: 45,
                        item: "IT233"
                    }
                ]
            }
        ]
    },
    {
        field: "order",
        value: "210",
        rows: [
            {
                field: "item",
                value: "IT282",
                rows: [{ order: "210", type: "stock", qty: 130, item: "IT282" }]
            },
            {
                field: "item",
                value: "IT283",
                rows: [
                    {
                        order: "210",
                        type: "production",
                        qty: 190,
                        item: "IT283"
                    },
                    {
                        order: "210",
                        type: "production",
                        qty: 210,
                        item: "IT283"
                    }
                ]
            },
            {
                field: "item",
                value: "IT102",
                rows: [
                    { order: "210", type: "customer", qty: 180, item: "IT102" },
                    { order: "210", type: "customer", qty: 230, item: "IT102" }
                ]
            },
            {
                field: "item",
                value: "IT233",
                rows: [
                    {
                        order: "210",
                        type: "production",
                        qty: 145,
                        item: "IT233"
                    }
                ]
            }
        ]
    }
];

let result = groupBy(stock, ["item", "order"]);

[
    {
        field: "item",
        value: "IT282",
        rows: [
            {
                field: "order",
                value: "200",
                rows: [
                    {
                        order: "200",
                        type: "production",
                        qty: 200,
                        item: "IT282"
                    },
                    { order: "200", type: "stock", qty: 30, item: "IT282" }
                ]
            },
            {
                field: "order",
                value: "210",
                rows: [
                    {
                        order: "210",
                        type: "production",
                        qty: 300,
                        item: "IT282"
                    },
                    { order: "210", type: "stock", qty: 130, item: "IT282" }
                ]
            }
        ]
    },
    {
        field: "item",
        value: "IT283",
        rows: [
            {
                field: "order",
                value: "200",
                rows: [
                    {
                        order: "200",
                        type: "production",
                        qty: 90,
                        item: "IT283"
                    },
                    {
                        order: "200",
                        type: "production",
                        qty: 110,
                        item: "IT283"
                    }
                ]
            },
            {
                field: "order",
                value: "210",
                rows: [
                    {
                        order: "210",
                        type: "production",
                        qty: 190,
                        item: "IT283"
                    },
                    {
                        order: "210",
                        type: "production",
                        qty: 210,
                        item: "IT283"
                    }
                ]
            }
        ]
    },
    {
        field: "item",
        value: "IT102",
        rows: [
            {
                field: "order",
                value: "200",
                rows: [
                    { order: "200", type: "customer", qty: 80, item: "IT102" },
                    { order: "200", type: "customer", qty: 130, item: "IT102" }
                ]
            },
            {
                field: "order",
                value: "210",
                rows: [
                    { order: "210", type: "customer", qty: 180, item: "IT102" },
                    { order: "210", type: "customer", qty: 230, item: "IT102" }
                ]
            }
        ]
    },
    {
        field: "item",
        value: "IT233",
        rows: [
            {
                field: "order",
                value: "200",
                rows: [
                    { order: "200", type: "production", qty: 45, item: "IT233" }
                ]
            },
            {
                field: "order",
                value: "210",
                rows: [
                    {
                        order: "210",
                        type: "production",
                        qty: 145,
                        item: "IT233"
                    }
                ]
            }
        ]
    }
];

我的群功能将收到任何订单项目和组任意数量的数组字段的任何阵列。

因为我想一个基于ES6功能，今天我用下面groupBy函数从该链接，对于单次的作品，但我有那么困难嵌套在一起。

这是我工作的代码：

  groupBy = (rows, groups) => {
    if (groups.length === 0) return rows;

    return this.groupByField(rows, groups, 0);
  };

  groupByField = (rows, groups, index) => {
    if (index >= groups.length) return rows;

    let grouped = this.groupRows(rows, groups[index]);

    index++;
    let ret = [];

    grouped.rows.map(row => {
      ret.push(this.groupByField(row.rows, groups, index));
    });

    grouped.rows = ret;
    return grouped;
  };

  groupRows = (rows, field) => {
    return rows.reduce(function(groups, x) {
      let val = helper.getValueByFieldNameString(x.data, field);

      let found = groups.find(item => {
        return item.groupedValue === val;
      });

      if (!found) {
        let rows = [];
        rows.push(x);

        groups.push({
          groupedField: field,
          groupedValue: val,
          rows: rows
        });
      } else {
        found.rows.push(x);
      }

      return groups;
    }, []);
  };

似乎递归性工作不正常。

我觉得你可以只是做一个功能组使用数组reduce和Object.values 。然后你组阵列后，如果你有被更多领域组，调用每个孩子在功能上row阵。例如：

 let stock = [{ order: "200", type: "production", qty: 200, item: "IT282" },{ order: "200", type: "production", qty: 90, item: "IT283" },{ order: "200", type: "customer", qty: 80, item: "IT102" },{ order: "200", type: "production", qty: 110, item: "IT283" },{ order: "200", type: "customer", qty: 130, item: "IT102" },{ order: "200", type: "production", qty: 45, item: "IT233" },{ order: "200", type: "stock", qty: 30, item: "IT282" },{ order: "210", type: "production", qty: 300, item: "IT282" },{ order: "210", type: "production", qty: 190, item: "IT283" },{ order: "210", type: "customer", qty: 180, item: "IT102" },{ order: "210", type: "production", qty: 210, item: "IT283" },{ order: "210", type: "customer", qty: 230, item: "IT102" },{ order: "210", type: "production", qty: 145, item: "IT233" },{ order: "210", type: "stock", qty: 130, item: "IT282" }]; function groupBy(arr, fields) { let field = fields[0] // one field at a time if (!field) return arr let retArr = Object.values( arr.reduce((obj, current) => { if (!obj[current[field]]) obj[current[field]] = {field: field, value: current[field],rows: []} obj[current[field]].rows.push(current) return obj }, {})) // recurse for each child's rows if there are remaining fields if (fields.length){ retArr.forEach(obj => { obj.count = obj.rows.length obj.rows = groupBy(obj.rows, fields.slice(1)) }) } return retArr } let result = groupBy(stock, ["order", "item"]); console.log(result)