我有这个类组件,我正在使用 GraphQL 从 JSON 文件获取数据。一切都按预期工作,但我发现在 Modal
组件打开时很难更新其内部的图像 src
。数据似乎没有传递到模态,并且它为所有卡片显示相同的图像。如果我尝试使用 props,它会在 image.src
中返回未定义。
任何关于如何解决这个问题的想法或帮助都会很棒!
我的代码:
import React from "react"
import { StaticQuery, graphql } from 'gatsby'
import { Container, Row, Col } from 'react-grid-system'
import Modal from 'react-responsive-modal'
class ProjectsList extends React.Component {
constructor(props) {
super(props)
this.state = {
open: false,
}
}
onOpenModal = () => {
this.setState({ open: true, modalImage: this.props });
};
onCloseModal = () => {
this.setState({ open: false });
};
render() {
const projects = this.props;
const { open } = this.state;
return(
<div>
<Row>
{projects.projects.map(item =>(
<Col md={6} key={item.id}>
<div className="project-card">
<div className="project-img-wrap">
<img src={item.image.src.publicURL} alt="projects" onClick={this.onOpenModal} />
</div>
<div className="project-text-wrap">
<span className="project-title">{item.title}</span>
</div>
</div>
<Modal open={open} onClose={this.onCloseModal} center>
<img style={{maxWidth: '800px'}} src={item.image.src.publicURL} alt="projects" />
</Modal>
</Col>
))}
</Row>
</div>
);
}
}
export default props => (
<StaticQuery
query={graphql`
query {
dataJson {
projects {
id
title
image {
src {
publicURL
}
}
}
}
}
`}
render={({ dataJson }) => <ProjectsList projects={dataJson.projects} {...props} />}
/>
)
最佳答案
我对您的代码做了一些编辑。那应该可以解决。
问题是您尚未将 modalImage
从 state
传递到模态图像中的 src
。
import React from "react"
import { StaticQuery, graphql } from 'gatsby'
import { Container, Row, Col } from 'react-grid-system'
import Modal from 'react-responsive-modal'
class ProjectsList extends React.Component {
constructor(props) {
super(props)
this.state = {
open: false,
modalImage: ""
}
}
onOpenModal = (image) => {
this.setState({ open: true, modalImage: image });
};
onCloseModal = () => {
this.setState({ open: false });
};
render() {
const projects = this.props;
const { open, modalImage } = this.state;
return(
<div>
<Row>
{projects.projects.map(item =>(
<Col md={6} key={item.id}>
<div className="project-card">
<div className="project-img-wrap">
<img src={item.image.src.publicURL} alt="projects" onClick={() => this.onOpenModal(item.image.src.publicURL)} />
</div>
<div className="project-text-wrap">
<span className="project-title">{item.title}</span>
</div>
</div>
<Modal open={open} onClose={() => this.onCloseModal()} center>
<img style={{maxWidth: '800px'}} src={modalImage} alt="projects" />
</Modal>
</Col>
))}
</Row>
</div>
);
}
}
export default props => (
<StaticQuery
query={graphql`
query {
dataJson {
projects {
id
title
image {
src {
publicURL
}
}
}
}
}
`}
render={({ dataJson }) => <ProjectsList projects={dataJson.projects} {...props} />}
/>
)
关于javascript - 如何在打开模态时更新图像src,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/59119654/