ReactJS中的Bootstrap下拉列表,一次只打开一个

Question

我有一个页面包含多个Bootstrap卡,每个卡是一个组件,每个卡页脚也是一个组件.卡页脚包含按钮.当您单击按钮时,下拉菜单将如下所示打开

在我点击按钮的任何时候,其他下拉应该处于关闭状态.但它发生这样......

要求:还有一件事是当我点击相同的按钮时,应该关闭相应的下拉菜单.

要求:当我点击下拉内的任何项目时,应关闭相应的下拉菜单

我的架构如下

主页组件代码-START

class HomePage extends React.Component {
  constructor(props) {
    super(props);
    this.state = {
      items: [],
      activatedIdStoredInParent: ""
    };
  }
  toggleCountersMenu = (name) => {
    var name1 = name;
    this.setState((prevState) => {
      return {
        activatedIdStoredInParent: name1
      }
    });
  } 

  render() {
   
    const products = this.state.items.map((item, index) => {     
      return <div>
        <Card
          product={item}
          activatedIdStoredInParent={this.state.activatedIdStoredInParent}
          toggleCountersMenu={this.toggleCountersMenu}
        >
        </Card>;
      </div>
    });

    return (
      <div>
        <div className="card-columns">
          {products}
        </div>
      </div >
    );
  }
}

export default HomePage;

主页组件代码 - 结束

卡片组件代码 - 开始

class Card extends React.Component {
    handleActionClick = (name) => {
        this.props.toggleCountersMenu(name);
    }
    render() {
        return (
            <div key={this.props.product.name}>
                <CardHeader product={this.props.product}  />
                <CardBody product={this.props.product}  />
                <CardFooter
                    product={this.props.product}                    
                    onActionItemClick={this.handleActionClick}
                    activatedIdStoredInParent={this.props.activatedIdStoredInParent}
                />
            </div>
        );
    }
}

export default Card;

卡片组件代码 - 开始

class CardFooter extends React.Component {

    handleActionItemClick = (name) => {
        this.props.onActionItemClick(name);
    }

    render() {
        console.log('Card Footer Drop Down comp rendered');
        return (
            <div className=" card-footer text-center">
                <ButtonDropdown text="F" className="danger"
                    product={this.props.product}
                    onActionItemClick={this.handleActionItemClick}
                    activatedIdStoredInParent={this.props.activatedIdStoredInParent}
                ></ButtonDropdown>            
            </div>
        );
    }
}

export default CardFooter;

ButtonDropdown COMPONENT CODE - START

class ButtonDropdown extends React.Component {
    constructor(props) {
        super(props);
        this.state = {
            open: false,
            show: ' none',
            localActivatedId: 'none'
        }
    }
    toggleOpen = (e) => {
        var name = e.target.name;

        this.setState((prevState, props) => {
            var item = {
                localActivatedId: name
            }
            if (props.activatedIdStoredInParent === name) {
                if (prevState.show === ' show') {
                    item.show = ' none';
                }
                else {
                    item.show = ' show';
                }
            }
            return item;
        });
        this.props.onActionItemClick(name);
    }

    numberClick = (e) => {
        var qty = e.target.innerText;
        this.setState((prevState, props) => {
            var item = {
                show: ' none'
            }
            return item;
        });
    }
    render() {
        return (
            <div className="btn-group" >
                <button type="button" className={`btn btn-${this.props.className}  mr-1`} name={this.props.product.name + '$$' + this.props.text} onClick={this.toggleOpen}>
                    {this.props.text} (classAdded={this.state.show})
                </button>
                
                <div className={`dropdown-menu ${this.state.show}`}>
                    <span className="dropdown-item cursor-pointer " onClick={this.numberClick}>
                        -1
                    </span>
                    <span className="dropdown-item cursor-pointer" onClick={this.numberClick}>
                        -2
                    </span>
                </div>
            </div>



        );
    }
}

export default ButtonDropdown;

当我在Card Footer中添加多个buttonDropdown组件时,最终产品是这样的.我怎样才能关闭其他下拉列表.

我想知道我的架构是否正确..我没有使用Redux/Flux等.

Answer 1

您可以使用componentDidUpdate生命周期来更新打开下拉列表的状态属性。我不知道是否是openorshow属性显示下拉列表的内容，但这是我的逻辑。

class ButtonDropdown extends React.Component {
  constructor(props) {
    super(props);
    this.state = {
      // 
    };
  }

  componentDidUpdate(prevProps) {
    const name = this.props.product.name + '$$' + this.props.text;

    if (prevProps.activatedIdStoredInParent !== this.props.activatedIdStoredInParent && this.props.activatedIdStoredInParent !== name) {
      this.closeDropDown();
    }
  }

  closeDropDown = () => this.setState({ isOpen: false });

  toggleOpen = (e) => {
    //
  }

  numberClick = (e) => {
   //
  }

  render() {
   //
  }
}

export default ButtonDropdown;