在AppContext中存储Axios响应

问题描述

我正在尝试构建网站的一部分,以动态地从REST API中获取联系信息。此时,我正在使用https://jsonplaceholder.typicode.com中的示例API。

我正在尝试使用axios,特别是useAxiosmakeUseAxios钩子来获取API,并将其存储在应用程序上下文中,然后可以在整个站点中使用,最好使用useContext钩子。另外,我需要能够基于用户交互来更新API调用,允许他们选择位置,进行API更新,并将其存储在应用程序的上下文中,以便所有这些动态更新。

从本质上讲,我已经基于this tutorial运行了一个基本的useContext场景,但是我在如何存储JSON响应方面苦苦挣扎,以便可以在{{1 }}。这是到目前为止我最接近的事情:

AppContext.tsx

useContext

还有我要访问的标头组件:

import React,{ createContext,ReactNode } from 'react';

import axios from 'axios';
import { makeUseAxios } from 'axios-hooks';
import { useCookie } from 'hooks/use-cookie';

export const AppContext = createContext();

export const DealerContextProvider = ({children}: any) => {
  const useAxios = makeUseAxios({
    axios: axios.create({ baseURL: 'https://jsonplaceholder.typicode.com/users/' }),});

  const LOCAL_STORAGE_KEY_DEALER = '_selectedDealerInformation';

  const [cookie] = useCookie('one-day-location','1');
  const [dealerInfo] = useAxios(`${cookie}`);

  return (
    <AppContext.Provider value={[dealerInfo]}>
      {children}
    </AppContext.Provider>
  );
};

我需要的是import React,{ ReactNode,useEffect,useState,useContext } from 'react'; import { AppContext } from 'components/app-context/AppContext'; import Logo from 'assets/svg/logo.svg'; import css from 'classnames'; import { Button } from 'components/button/Button'; import { Link } from 'components/link/Link'; import { NotificationBar } from '../notification-bar/NotificationBar'; import s from './Header.scss'; import { MenuIcon } from 'components/menu-icon/MenuIcon'; import { MainNav } from './navigation/MainNav'; interface HeaderProps { navigationContent: ReactNode; } export const Header = ({ navigationContent }: HeaderProps) => { const [scrolled,setScrolled] = useState(false); const [open,setOpen] = useState(false); const blogInfo = useContext(AppContext); const buttonLabel = blogInfo ? `${blogInfo.name}` : 'Find a Dealer'; const buttonLink = blogInfo ? `tel:${blogInfo.name}` : '/find-a-dealer'; useEffect(() => { const handleScroll = () => { const isScrolled = window.scrollY > 10; if (isScrolled !== scrolled) { setScrolled(!scrolled); } }; document.addEventListener('scroll',handleScroll,{ passive: true }); return () => { document.removeEventListener('scroll',handleScroll); }; },[scrolled]); return ( <> <NotificationBar notificationContent={navigationContent} /> <header className={scrolled ? css(s.header,s.header__scrolled) : s.header} data-open={open ? 'true' : ''} > <nav className={s.header__navigation}> <ul className={s.header__container}> <li className={s.header__logo}> <Link to="/" className={s.header__link}> <Logo /> </Link> </li> <li className={s.header__primary}> <MainNav navigationItems={navigationContent} /> </li> <li className={s.header__utility}> <Button href={buttonLink}>{buttonLabel}</Button> </li> <li className={s.header__burger}> <MenuIcon onClick={() => setOpen(!open)} /> </li> </ul> </nav> </header> </> ); }; 中的按钮来动态显示所选经销商的名称和电话号码。我可以根据需要澄清任何内容,我对React还是很陌生,仍在学习如何表达自己的全部需求。

谢谢!

解决方法

好的,在过去的24小时里,我进行了大量的挖掘工作,并且能够找到解决方案。

我有上下文,为了清楚起见,现在命名为ApiContext

ApiContext.tsx

import React,{ createContext } from 'react';

import axios from 'axios';
import { makeUseAxios } from 'axios-hooks';
import { useCookie } from 'hooks/use-cookie';

const contextObject = {} as any;

export const context = createContext(contextObject);

const useAxios = makeUseAxios({
  axios: axios.create({ baseURL: process.env.GATSBY_API_ENDPOINT }),});

export const ApiContext = ({ children }: any) => {
  const [cookie] = useCookie('one-day-location','1');

  const [{ data }] = useAxios(`${cookie}`);

  const { Provider } = context;
  return <Provider value={data}>{children}</Provider>;
};

然后,要在各个组件之间使用它,请将AppLayout包装在<ApiContext>中:

AppLayout.tsx

import React,{ ReactNode } from 'react';

import { ApiContext } from 'contexts/ApiContext';
import { graphql,StaticQuery } from 'gatsby';

import { Devtools } from '../devtools/Devtools';
import { Footer } from '../footer/Footer';
import { Header } from '../header/Header';
import s from './AppLayout.scss';

interface AppLayoutProps {
  children: ReactNode;
  location: string;
}

const isDev = process.env.NODE_ENV === 'development';

// tslint:disable no-default-export
export default ({ children }: AppLayoutProps) => {
  return (
    <StaticQuery
      query={`${NavQuery}`}
      render={(data) => (
        <>
          <ApiContext>
            <Header navigationContent={data.prismic.allNavigations.edges[0].node} />

            <div className={s.layout}>
              {children}

              <Footer navigationItems={data.prismic.allNavigations.edges[0].node} />

              {isDev && <Devtools />}
            </div>
          </ApiContext>
        </>
      )}
    />
  );
};

const NavQuery = graphql`
  query NavQuery {
    prismic {
      allNavigations {
        edges {
          node {
            ...NotificationBar
            ...NavigationItems
            ...FooterNavigationItems
          }
        }
      }
    }
  }
`;

在我的Header组件中,我可以使用useContext钩子访问数据:

Header.tsx

import React,{ ReactNode,useContext,useEffect,useState } from 'react';

import Logo from 'assets/svg/logo.svg';
import css from 'classnames';
import { Button } from 'components/button/Button';
import { Link } from 'components/link/Link';
import { MenuIcon } from 'components/menu-icon/MenuIcon';
import { context } from 'contexts/ApiContext';

import { NotificationBar } from '../notification-bar/NotificationBar';
import s from './Header.scss';
import { MainNav } from './navigation/MainNav';

interface HeaderProps {
  navigationContent: ReactNode;
}

export const Header = ({ navigationContent }: HeaderProps) => {
  const [scrolled,setScrolled] = useState(false);
  const [open,setOpen] = useState(false);

  const data = useContext(context);

  console.log(data);

  const buttonLabel =  data ? data.name : 'Find a Dealer';
  const buttonLink = data ? `tel:${data.phone}` : '/find-a-dealer';

  useEffect(() => {
    const handleScroll = () => {
      const isScrolled = window.scrollY > 10;
      if (isScrolled !== scrolled) {
        setScrolled(!scrolled);
      }
    };

    document.addEventListener('scroll',handleScroll,{ passive: true });

    return () => {
      document.removeEventListener('scroll',handleScroll);
    };
  },[scrolled]);

  return (
    <>
      <NotificationBar notificationContent={navigationContent} />
      <header
        className={scrolled ? css(s.header,s.header__scrolled) : s.header}
        data-open={open ? 'true' : ''}
      >
        <nav className={s.header__navigation}>
          <ul className={s.header__container}>
            <li className={s.header__logo}>
              <Link to="/" className={s.header__link}>
                <Logo />
              </Link>
            </li>

            <li className={s.header__primary}>
              <MainNav navigationItems={navigationContent} />
            </li>

            <li className={s.header__utility}>
              <Button href={buttonLink}>{buttonLabel}</Button>
            </li>

            <li className={s.header__burger}>
              <MenuIcon onClick={() => setOpen(!open)} />
            </li>
          </ul>
        </nav>
      </header>
    </>
  );
};

我仍在进行其他优化,尤其是消除页面加载时的闪烁,并利用useCookie(我构建的自定义钩子)在单击按钮时更新API。希望这可以使其他搜索此信息的人更加清楚,我花了几个小时才能确定解决方案。干杯。

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