提问者:小点点

列表中的每个孩子都应该有一个唯一的“键”道具。尽管我给了你一把钥匙,而且是独一无二的


我知道这个问题已经被问了很多,我完全理解键的重要性,以反应重新渲染正确的组件,但我给了一个键,做一切正确的,但出于某种原因,它仍然给我这个警告。

付款包。组成部分jsx

import React from "react";

import { Row, Col } from "react-bootstrap";



import PaymentList from "../payment-list/payment-list.component";

const PaymentPackages = ({ packages }) => {
  const orgSize = useSelector((state) => state.registeredUser.orgSize);

  //Recommended payment plans objects to show

  

  // Other packages plans
  let plan1, plan2;

  const otherPlans = packages.filter(
    ({ priceInfo }) => priceInfo.description !== orgSize.toLowerCase()
  );
  if (recommendedHeading.toLowerCase() === "small organization") {
    plan1 = "medium organization";
    plan2 = "large organization";
  } else if (recommendedHeading.toLowerCase() === "medium organization") {
    plan1 = "small organization";
    plan2 = "large organization";
  } else if (recommendedHeading.toLowerCase() === "large organization") {
    plan1 = "small organization";
    plan2 = "medium organization";
  }
  const paymentPlan1 = otherPlans.filter(
    ({ priceInfo }) => priceInfo.description === plan1
  );
 
 
  return (
    <>
      <div className="price-plan" data-test="price-plan">
        <Row>
          <Col>
            <div className="payment-box left-box">
              
              {paymentPlan1.map(({ priceInfo, id }, i) => (
                <>
                  <PaymentList
                    key={id}     // I have tried giving 'i' also and tried creating random strings as unique id but none of them is working
                    priceId={id}
                    priceInfo={priceInfo}
                    recommended={false}
                  />
                </>
              ))}
            </div>
          </Col>
         
        </Row>
      </div>
    </>
  );
};

export default PaymentPackages;

错误是与PaymentList如果我删除它,那么没有错误,但我如何解决这个警告,我不知道我做错了什么。


共1个答案

匿名用户

密钥需要位于最外面的元素上。在您的例子中,最外层的元素是片段。因此,如果不需要,请删除片段:

{paymentPlan1.map(({ priceInfo, id }, i) => (
  <PaymentList
    key={id}
    priceId={id}
    priceInfo={priceInfo}
    recommended={false}
  />
))}

或者将键向上移动到片段(您需要使用长臂片段语法才能给它一个键):

{paymentPlan1.map(({ priceInfo, id }, i) => (
  <React.Fragment key={id}>
    <PaymentList
      priceId={id}
      priceInfo={priceInfo}
      recommended={false}
    />
  </React.Fragment>
))}