| <script lang="ts"> |
| import { defineComponent } from 'vue' |
| import { useQuery } from '@tanstack/vue-query' |
|
|
| import { Post } from './types' |
|
|
| const fetcher = async (id: number): Promise<Post> => |
| await fetch(`https://jsonplaceholder.typicode.com/posts/${id}`).then( |
| (response) => response.json(), |
| ) |
|
|
| export default defineComponent({ |
| name: 'PostDetails', |
| props: { |
| postId: { |
| type: Number, |
| required: true, |
| }, |
| }, |
| emits: ['setPostId'], |
| setup(props) { |
| const { isPending, isError, isFetching, data, error } = useQuery({ |
| queryKey: ['post', props.postId], |
| queryFn: () => fetcher(props.postId), |
| }) |
|
|
| return { isPending, isError, isFetching, data, error } |
| }, |
| }) |
| </script> |
|
|
| <template> |
| <h1>Post {{ postId }}</h1> |
| <a @click="$emit('setPostId', -1)" href="#"> Back </a> |
| <div v-if="isPending" class="update">Loading...</div> |
| <div v-else-if="isError">An error has occurred: {{ error }}</div> |
| <div v-else-if="data"> |
| <h1>{{ data.title }}</h1> |
| <div> |
| <p>{{ data.body }}</p> |
| </div> |
| <div v-if="isFetching" class="update">Background Updating...</div> |
| </div> |
| </template> |
|
|
| <style scoped> |
| .update { |
| font-weight: bold; |
| color: green; |
| } |
| </style> |
| |
