问题描述

我正在用 React.Js 开发一个应用程序.

I'm developing an application in React.Js.

我有数组:

array = [
  {
    "id": 1,
    "date": {
      "id": 1,
      "name": "202001"
    },
    "item": {
      "id": 1,
      "name": "I1"
    },
    "price": 100
    },
    {
    "id": 2,
    "date": {
      "id": 2,
      "name": "202002"
    },
    "item": {
      "id": 1,
      "name": "I1"
    },
    "price": 200
  },
  {
    "id": 3,
    "date": {
      "id": 2,
      "name": "202002"
    },
    "item": {
      "id": 2,
      "name": "I2"
    },
    "price": 300
  },
]

而我显示的数据如表所示:

And I show the data as shown in the table:

我这样做是为了获得这些值:

And I did this to get those values:

items_dicc = array.reduce((acc, e) => {
    if (!acc[e["item"]["name"]]) {
      acc[e["item"]["name"]] = {
        [e["date"]["name"]]: e["price"]
      }
    } else {
      acc[e["item"]["name"]][e["date"]["name"]] = e["price"]
    }
    return acc
  }, {})

dates = [...new Set(Object.keys(items_dicc).map(i => Object.keys(items_dicc[i])).flat())]

totalSumPerDate = {};

dates.forEach(date => {
  const sumOnDate = Object.values(items_dicc).reduce((acc, curr) => {
    acc = acc + (curr[date]? curr[date] : 0);
    return acc;
  }, 0);
  totalSumPerDate[[date]] = sumOnDate;
});

totalSum = Object.values(totalSumPerDate).reduce((acc, curr) => acc+curr, 0);

sumPerItem = {};

Object.keys(items_dicc).forEach(key => {
   const sum = Object.values(items_dicc[key]).reduce((acc, curr) => acc + curr, 0);
   sumPerItem[[key]] = sum;
});


<table>
  <thead>
    <tr>
      <th>ITEM</th>
      {dates.map(date => <th>{date}</th>)}
      <th>TOTAL</th>
    </tr>
  </thead>
  <tbody>
  {
    Object.keys(items_dicc).map((item) => {
      return (
        <tr>
          <td>{item}</td>
          {dates.map((date) => <td>{items_dicc[item][date] || ''}</td>)}
          <td>{sumPerItem[item]}</td>
        </tr>
      )
    })
  }
    <tr>
      <td>TOTAL</td>
        {Object.values(totalSumPerDate).map(item => <td>{item}</td>)}
      <td>{totalSum}</td>
    </tr>
  </tbody>
</table>

我需要能够通过弹出窗口显示数组可能包含的其他数据(例如 id).

I need to be able to show through a popup other data that the array may contain (for example the id).

我知道要做到这一点，有必要在组件中创建一个本地状态，以便在单击所选记录时更新详细信息并将状态传递给模式.

I understand that to do this it is necessary to create a local state in the component to update the details when clicking on the selected record and pass the state to the modal.

它还应该能够引入总计信息.

It should also be able to bring in the totals info.

我该怎么做，建议?

推荐答案

试试这个方法，

您必须为表格行的选定记录创建本地状态并将其传递给模态组件.单击表格行时更新所选记录.

You have to create a local state for the selected record of the table row and pass it to the modal component. Update the selected record on click of the table row.

import React, { useState } from "react";
import "./styles.css";
import "bootstrap/dist/css/bootstrap.min.css";

const array = [
  {
    id: 1,
    date: {
      id: 1,
      name: "202001"
    },
    item: {
      id: 1,
      name: "I1"
    },
    price: 100
  },
  {
    id: 2,
    date: {
      id: 2,
      name: "202002"
    },
    item: {
      id: 1,
      name: "I1"
    },
    price: 200
  },
  {
    id: 3,
    date: {
      id: 2,
      name: "202002"
    },
    item: {
      id: 2,
      name: "I2"
    },
    price: 300
  }
];

export default function App() {
  const [show, setShow] = useState(false);
  const [selectedData, setSelectedData] = useState({});
  const hanldeClick = (selectedId) => {
    const selectedRec = array.find((val) => val.item.name === selectedId);
    setSelectedData(selectedRec);
    setShow(true);
  };

  const hideModal = () => {
    setShow(false);
  };
  const items_dicc = array.reduce((acc, e) => {
    if (!acc[e["item"]["name"]]) {
      acc[e["item"]["name"]] = {
        [e["date"]["name"]]: e["price"]
      };
    } else {
      acc[e["item"]["name"]][e["date"]["name"]] = e["price"];
    }
    return acc;
  }, {});

  const dates = [
    ...new Set(
      Object.keys(items_dicc)
        .map((i) => Object.keys(items_dicc[i]))
        .flat()
    )
  ];

  const totalSumPerDate = {};

  dates.forEach((date) => {
    const sumOnDate = Object.values(items_dicc).reduce((acc, curr) => {
      acc = acc + (curr[date] ? curr[date] : 0);
      return acc;
    }, 0);
    totalSumPerDate[[date]] = sumOnDate;
  });

  const totalSum = Object.values(totalSumPerDate).reduce(
    (acc, curr) => acc + curr,
    0
  );

  const sumPerItem = {};

  Object.keys(items_dicc).forEach((key) => {
    const sum = Object.values(items_dicc[key]).reduce(
      (acc, curr) => acc + curr,
      0
    );
    sumPerItem[[key]] = sum;
  });

  return (
    <>
      <table>
        <thead>
          <tr>
            <th>ITEM</th>
            {dates.map((date) => (
              <th>{date}</th>
            ))}
            <th>TOTAL</th>
          </tr>
        </thead>
        <tbody>
          {Object.keys(items_dicc).map((item) => {
            return (
              <tr onClick={() => hanldeClick(item)}>
                <td>{item}</td>
                {dates.map((date) => (
                  <td>{items_dicc[item][date] || ""}</td>
                ))}
                <td>{sumPerItem[item]}</td>
              </tr>
            );
          })}
          <tr>
            <td>TOTAL</td>
            {Object.values(totalSumPerDate).map((item) => (
              <td>{item}</td>
            ))}
            <td>{totalSum}</td>
          </tr>
        </tbody>
      </table>
      {show && <Modal details={selectedData} handleClose={hideModal} />}
    </>
  );
}

const Modal = ({ handleClose, details }) => {
  console.log(details);
  return (
    <div className="modal display-block">
      <section className="modal-main">
        <div className="App">
          <table class="table">
            <thead>
              <tr>
                <th scope="col">ITEM</th>
                <th scope="col">ID</th>
                <th scope="col">DATE</th>
                <th scope="col">PRICE</th>
              </tr>
            </thead>
            <tbody>
              <tr>
                <td>{details?.item?.name}</td>
                <td>{details?.item?.id}</td>
                <td>{details?.date?.name}</td>
                <td>{details?.price}</td>
              </tr>
            </tbody>
          </table>
        </div>
        <button onClick={handleClose}>close</button>
      </section>
    </div>
  );
};

工作代码 - https:///codesandbox.io/s/adoring-moore-rsn97?file=/src/App.js:0-3665

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