React受控组件与状态管理：解决输入框占位符持久化及数据不更新问题

import { useState, useEffect } from "react";
import TeamManagement from "./TeamManagement";
import TeamDetails from "./TeamDetails";

export default function Home() {
  // currentTeam 用于存储当前选中的或正在编辑的团队对象
  const [currentTeam, setCurrentTeam] = useState({} as any); // 初始为空对象，或定义一个默认结构

  const [isAddTeamMode, setIsAddTeamMode] = useState(true);
  const [teams, setTeams] = useState([
    { id: 1, name: "FINANCE", teamLead: "John Doe", description: "finance department description", status: "active", teamMember: "member1" },
    { id: 2, name: "NUTRITION", teamLead: "Mike Green", description: "Nutrition department description", status: "active", teamMember: "member2" },
    { id: 3, name: "PROCUREMENT", teamLead: "Dave Brown", description: "Procurement department description", status: "active", teamMember: "member3" },
    { id: 4, name: "EQUIPMENT SERVICES", teamLead: "Jim Jones", description: "Equipment Services description", status: "active", teamMember: "member1" },
    { id: 5, name: "SITE BASED OPERATIONS", teamLead: "Steve Smith", description: "Site based operations description", status: "active", teamMember: "member2" },
  ]);

  // 当点击一个团队时，设置 currentTeam 为该团队的完整对象
  function handleTeamDetails(team: any) {
    setCurrentTeam(team);
    setIsAddTeamMode(true); // 确保在查看模式
  }

  // 进入添加团队模式
  function addTeam() {
    setIsAddTeamMode(false); // 启用输入框
    // 清空 currentTeam，让 TeamDetails 显示空表单
    setCurrentTeam({
      name: "",
      teamLead: "",
      description: "",
      status: "",
      teamMember: "",
    });
  }

  // 保存团队信息
  function saveTeam(updatedTeamDetails: any) {
    const newTeamId = teams.length + 1;
    const newTeam = {
      id: newTeamId,
      ...updatedTeamDetails, // 使用解构赋值合并新团队详情
    };

    const updatedTeams = [...teams, newTeam];
    setTeams(updatedTeams);
    setIsAddTeamMode(true); // 返回查看模式
    setCurrentTeam({}); // 保存后清空当前选中的团队，或设置为新添加的团队
  }

  // 取消保存
  function cancelSave() {
    setIsAddTeamMode(true); // 返回查看模式
    // 清空 currentTeam，或恢复到之前的状态
    setCurrentTeam({});
  }

  return (
    <div>
      <h2>Hello World!</h2>
      <div style={{ display: "flex" }}>
        <TeamManagement
          setTeam={handleTeamDetails} // 传递整个团队对象
          teams={teams}
          addTeam={addTeam}
        />
        <TeamDetails
          team={currentTeam} // 传递 currentTeam 对象
          isAddTeamMode={isAddTeamMode}
          cancelSave={cancelSave}
          onSaveTeam={saveTeam}
        />
      </div>
    </div>
  );
}

import { Accordion } from "react-bootstrap";

interface Props {
  setTeam: (team: any) => void; // 修改类型，接收整个团队对象
  teams: any[];
  addTeam: () => void;
}

export default function TeamManagement(props: Props) {
  const setTeam = (team: any) => {
    props.setTeam(team); // 直接传递团队对象
  };

  return (
    <div className="team-management">
      <div>
        <h4>Team Management</h4>
      </div>
      <div>
        <button onClick={props.addTeam}>Add Team</button>
      </div>
      <div>
        {props.teams.map((team: any) => (
          <Accordion key={team.id} defaultActiveKey="0">
            {/* 点击时传递整个 team 对象 */}
            <Accordion.Item eventKey={team.id.toString()} onClick={() => setTeam(team)}>
              <Accordion.Header>{team.name}</Accordion.Header>
            </Accordion.Item>
          </Accordion>
        ))}
      </div>
    </div>
  );
}

import { useEffect, useState } from "react";

interface Props {
  team: any; // 现在接收整个团队对象
  isAddTeamMode: boolean;
  cancelSave: () => void;
  onSaveTeam: (details: any) => void;
}

export default function TeamDetails(props: Props) {
  // updatedTeamDetails 用于管理表单输入框的本地状态
  const [updatedTeamDetails, setUpdatedTeamDetails] = useState({
    name: "",
    teamLead: "",
    description: "",
    status: "",
    teamMember: "", // 新增 teamMember 字段
  });

  // 使用 useEffect 钩子来同步父组件传递的 team 属性到本地状态
  useEffect(() => {
    // 确保 props.team 不为空，否则会尝试解构 undefined
    if (props.team && Object.keys(props.team).length > 0) {
      setUpdatedTeamDetails(props.team);
    } else {
      // 当 props.team 为空时，清空表单
      resetForm();
    }
  }, [props.team]); // 依赖项为 props.team，当它变化时触发 effect

  // 重置表单到初始空状态
  const resetForm = () => {
    setUpdatedTeamDetails({
      name: "",
      teamLead: "",
      description: "",
      status: "",
      teamMember: "",
    });
  };

  // 处理保存团队的逻辑
  const handleSaveTeam = () => {
    props.onSaveTeam(updatedTeamDetails); // 将本地状态传递给父组件保存
    resetForm(); // 保存后清空本地表单状态
  };

  return (
    <div className="team-details">
      <div>
        {/* 直接从 props.team 获取名称，因为现在它是一个完整的对象 */}
        <h4>Team Details: {props.team?.name || "New Team"}</h4>
      </div>

      <div style={{ display: "flex", flexDirection: "column" }}>
        <label htmlFor="teamNameInput">Team Name:</label>
        <input
          type="text"
          id="teamNameInput"
          value={updatedTeamDetails.name || ""} // 绑定 value 到状态，确保始终是受控组件
          disabled={props.isAddTeamMode}
          onChange={(e) =>
            setUpdatedTeamDetails({ ...updatedTeamDetails, name: e.target.value })
          }
        />

        <label htmlFor="teamLeadInput">Team Lead:</label>
        <input
          type="text"
          id="teamLeadInput"
          value={updatedTeamDetails.teamLead || ""}
          disabled={props.isAddTeamMode}
          onChange={(e) =>
            setUpdatedTeamDetails({ ...updatedTeamDetails, teamLead: e.target.value })
          }
        />

        <label htmlFor="descriptionInput">Description:</label>
        <input
          type="text"
          id="descriptionInput"
          value={updatedTeamDetails.description || ""}
          // 注意：原代码中此输入框始终 disabled。根据需求决定是否移除此 disabled
          disabled={props.isAddTeamMode}
          onChange={(e) =>
            setUpdatedTeamDetails({ ...updatedTeamDetails, description: e.target.value })
          }
        />

        <label htmlFor="statusInput">Status:</label>
        <input
          type="text"
          id="statusInput"
          value={updatedTeamDetails.status || ""}
          disabled={props.isAddTeamMode}
          onChange={(e) =>
            setUpdatedTeamDetails({ ...updatedTeamDetails, status: e.target.value })
          }
        />

        <label htmlFor="teamMembersSelect">Team Members:</label>
        <select
          id="teamMembersSelect"
          value={updatedTeamDetails.teamMember || ""} // 绑定 value
          disabled={props.isAddTeamMode}
          onChange={(e) =>
            setUpdatedTeamDetails({ ...updatedTeamDetails, teamMember: e.target.value })
          }
        >
          <option value="">Select a member</option> {/* 添加一个默认空选项 */}
          <option value="member1">Member 1</option>
          <option value="member2">Member 2</option>
          <option value="member3">Member 3</option>
        </select>
      </div>

      <div style={{ display: "flex", margin: "10px", justifyContent: "space-between" }}>
        <div>
          <button
            onClick={(e) => {
              e.stopPropagation();
              handleSaveTeam();
            }}
          >
            Save
          </button>
        </div>
        <div>
          <button onClick={props.cancelSave}>Cancel</button>
        </div>
      </div>
    </div>
  );
}