我想使用 React js 模态获取动态内容我正在使用包react-responsive-modal。首先我通过地图渲染所有帖子。现在我希望当我单击单个帖子时,模式应该弹出并仅显示该特定帖子的标题和正文。现在我不知道如何在模态中获取单个帖子。
是否可以通过第三方包来做到这一点,或者我必须为此制作自定义模式?
import React from 'react';
import Modal from 'react-responsive-modal';
import Axios from 'axios';
const styles = {
fontFamily: 'sans-serif',
textAlign: 'center'
};
class App extends React.Component {
state = {
posts: [],
open: false
};
componentDidMount() {
let url = 'https://jsonplaceholder.typicode.com/posts';
Axios.get(url).then(res => {
this.setState({
posts: res.data.slice(0, 10)
});
console.log(res.data.slice(0, 10));
});
}
onOpenModal = () => {
this.setState({ open: true });
};
onCloseModal = () => {
this.setState({ open: false });
};
renderPosts() {
return this.state.posts.map(post => {
return (
<div
key={post.id}
style={{ width: 400, height: 400, backgroundColor: 'orange' }}
onClick={this.onOpenModal}
>
<h1>{post.title}</h1>
</div>
);
});
}
renderModal(id, title, body) {
return this.state.posts.map(post => {
return (
<div key={post.id} style={{ width: 400, height: 400, backgroundColor: 'orange' }}>
<h1>{post.id}</h1>
<h1>{post.title}</h1>
<p>{post.body}</p>
</div>
);
});
}
render() {
const { open } = this.state;
return (
<div style={styles}>
<h2>react-responsive-modal</h2>
<div>{this.renderPosts()}</div>
<Modal open={open} onClose={this.onCloseModal} center>
<h2>Simple centered modal</h2>
<div>{this.renderModal()}</div>
</Modal>
</div>
);
}
}
export default App;
您需要在您的App
跟踪当前所选帖子的组件。在你的onOpenModal()
方法,您可以使用被单击的帖子的索引来更新该状态。然后,在renderModal()
,您可以检查所选帖子是什么,并且仅渲染该帖子而不是映射整个数组。
class App extends React.Component {
state = {
posts: [],
open: false,
selectedPost: null // Keep track of the selected post
};
componentDidMount() {
let url = "https://jsonplaceholder.typicode.com/posts";
Axios.get(url).then(res => {
this.setState({
posts: res.data.slice(0, 10)
});
console.log(res.data.slice(0, 10));
});
}
onOpenModal = i => {
this.setState({
open: true,
selectedPost: i // When a post is clicked, mark it as selected
});
};
onCloseModal = () => {
this.setState({ open: false });
};
renderPosts = () => {
return this.state.posts.map((post, i) => {
return (
<div
key={post.id}
style={{ width: 400, height: 400, backgroundColor: "orange" }}
onClick={() => this.onOpenModal(i)} // Pass the id of the clicked post
>
<h1>{post.title}</h1>
</div>
);
});
}
renderModal = () => {
// Check to see if there's a selected post. If so, render it.
if (this.state.selectedPost !== null) {
const post = this.state.posts[this.state.selectedPost];
return (
<div
style={{ width: 400, height: 400, backgroundColor: "orange" }}
>
<h1>{post.id}</h1>
<h1>{post.title}</h1>
<p>{post.body}</p>
</div>
);
}
}
render() {
const { open } = this.state;
return (
<div style={styles}>
<h2>react-responsive-modal</h2>
<div>{this.renderPosts()}</div>
<Modal open={open} onClose={this.onCloseModal} center>
<h2>Simple centered modal</h2>
<div>{this.renderModal()}</div>
</Modal>
</div>
);
}
}
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