Node.js 如何从类别res.json useSWR x mongodb x nexjt(节点js)读取和mab子数组
这里有人能帮我吗???? 如何读取和映射json中的数组 钩子(useSWR/usescategories): 第页:Node.js 如何从类别res.json useSWR x mongodb x nexjt(节点js)读取和mab子数组,node.js,arrays,json,mongodb,next.js,Node.js,Arrays,Json,Mongodb,Next.js,这里有人能帮我吗???? 如何读取和映射json中的数组 钩子(useSWR/usescategories): 第页: const {categories, sub, categoriesLoading } = useCategories() 组件/用途??: {!categories ? 'Loading' : (<> {categories.map(category => ( <div key={category.slug}&
const {categories, sub, categoriesLoading } = useCategories()
组件/用途??:
{!categories ? 'Loading' : (<>
{categories.map(category => (
<div key={category.slug}>
name : {category.name}
sub:{!sub ? '': (<>{sub.map(sub => (<><p key={sub._id}>{sub.name}</p></>))}</>)}
</div>
))}
</>)}
{!类别?“正在加载”:(
{categories.map(category=>(
名称:{category.name}
sub:{!sub?'':({sub.map(sub=>({sub.name}
))}
))}
)}
在SenpaIIII>删除之前谢谢您
const sub=data.sub[0]
然后:
import {useCategories} from '../useCategories'
export default function pages() {
const {categories, categoriesLoading } = useCategories()
return(<>
{!categories ? 'loading categories..' : (<>
{categories.map(category => (
<div key={category.slug}>
name : {category.name}
sub: {!category.subs ? 'no sub' :
(<>{category.subs.map(sub => (
<div key={sub._id}>
sub list : {sub.name}
</div>
))}</>)}
</div>
))}
</>)}
</>)
}
从“../useCombicates”导入{useCombicates}
导出默认函数页(){
常量{categories,categoriesLoading}=useCegories()
返回(
{!类别?“正在加载类别…”(
{categories.map(category=>(
名称:{category.name}
sub:{!category.subs?'no sub':
({category.subs.map(sub=>(
子列表:{sub.name}
))})}
))}
)}
)
}
import {useCategories} from '../useCategories'
export default function pages() {
const {categories, categoriesLoading } = useCategories()
return(<>
{!categories ? 'loading categories..' : (<>
{categories.map(category => (
<div key={category.slug}>
name : {category.name}
sub: {!category.subs ? 'no sub' :
(<>{category.subs.map(sub => (
<div key={sub._id}>
sub list : {sub.name}
</div>
))}</>)}
</div>
))}
</>)}
</>)
}