我正在尝试学习nextjs。正在努力使用getServerSideProps.
使用免费的 api,我在 DOM 上显示了一个国家列表。我想动态链接到一个国家/地区,并为该特定国家/地区获取和显示数据。
到目前为止,这是我的代码
const Country = props => (
<Layout>
<h1>{props.country.name}</h1>
<span>{props.country.capital}</span>
</Layout>
);
export async function getServerSideProps(context) {
const { id } = context.query;
const res = await fetch(`https://restcountries.eu/rest/v2/name/${id}`);
const country = await res.json();
console.log(`Fetched place: ${country.name}`);
return { props: { country } };
}
export default Country;
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<div className='container'>
<Head>
<title>Countries List</title>
<link rel='icon' href='/favicon.ico' />
</Head>
<Layout>
<main>
<h1>
Countries{' '}
<span role='img' aria-label='world emoji'>
</span>
</h1>
<ul>
{countries.map(country => (
<li key={country.name}>
<Link href='/p/[id]' as={`/p/${country.name}`}>
<a>{country.name}</a>
</Link>
</li>
))}
</ul>
</main>
</Layout>
</div>
);
export async function getServerSideProps() {
// Call an external API endpoint to get posts.
const res = await fetch('https://restcountries.eu/rest/v2/all');
const countries = await res.json();
// By returning { props: posts }, the Blog component
// will receive `posts` as a prop at build time
return {
props: {
countries,
},
};
}
export default Home;
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URL 动态路由确定。例如,当您单击阿富汗时,网址会显示http://localhost:3000/p/Afghanistan。
然而,我的国家/地区组件不显示任何内容并undefined打印到终端。
来自 URL 的 url 和响应示例: https://restcountries.eu/rest/v2/name/Afghanistan
{
name: "Afghanistan"
}
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抱歉,如果是菜鸟问题。尝试学习nextjs
Yil*_*maz 11
export async function getServerSideProps(context) {
const { id } = context.query;
const res = await fetch(`https://restcountries.eu/rest/v2/name/${id}`);
const country = await res.json();
console.log(`Fetched place: ${country.name}`);
return { props: { country } };
}
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你正在从上面的函数返回一个嵌套对象
{ props: { country:country } }
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所以这个道具将像这样附加到道具上:
`props.props`
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这是你应该如何实施
const Country = props => (
<Layout>
<h1>{props.props.country.name}</h1>
<span>{props.props.country.capital}</span>
</Layout>
);
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