Question

我正在尝试使用gatsby-image来构建react-bootstrap轮播，因为标准img标签的加载速度很慢。但是，我面临的问题是我想为文件夹中的所有图像而不是像gatsby-starter-default中的每个文件编写单个组件。因此，我希望Image组件返回可在诸如<Image[0] />这样的轮播中使用的图像数组。或将relativePath传递给Carousel内部的组件，例如<Image(carouselImages/carousel_1.jpeg) />

请参见下面的carousel.js（为便于阅读，减少到2张幻灯片）代码。

import React from 'react'
import Carousel from 'react-bootstrap/Carousel'
import Button from 'react-bootstrap/Button'
import './style.scss'
import { injectIntl, Link, FormattedMessage } from "gatsby-plugin-intl"

import Image1 from 'components/img1'
import Image2 from 'components/img2'

class ControlledCarousel extends React.Component {
  constructor(props, context) {
    super(props, context)

    this.handleSelect = this.handleSelect.bind(this)

    this.state = {
      index: 0,
      direction: null,
    }
  }

  handleSelect(selectedIndex, e) {
    this.setState({
      index: selectedIndex,
      direction: e.direction,
    })
  }

  render() {
    const { index, direction } = this.state

    return (
      <Carousel
        activeIndex={index}
        direction={direction}
        onSelect={this.handleSelect}>

        <Carousel.Item>
          <div className="imgWrapper">
           <Image1 />
          </div>
          <Carousel.Caption>
            <p> some text </p>
          </Carousel.Caption>
        </Carousel.Item>

        <Carousel.Item>
          <div className="imgWrapper">
           <Image2 />
          </div>
          <Carousel.Caption>
            <p> some text </p>
          </Carousel.Caption>
        </Carousel.Item>
      </Carousel>
    )
  }
}
export default ControlledCarousel

还有一个Image组件本身：

import React from "react"
import { StaticQuery, graphql } from "gatsby"
import Img from "gatsby-image"

const Image = () => (
  <StaticQuery
    query={graphql`
      query {
        placeholderImage: file(relativePath: { eq: "carouselImages/carousel_1.jpg" }) {
          childImageSharp {
            fluid(maxWidth: 2500) {
              ...GatsbyImageSharpFluid
            }
          }
        }
      }
    `}
    render={data => <Img fluid={data.placeholderImage.childImageSharp.fluid} />}
  />
)
export default Image

关于使它协同工作的正确方法的任何建议？非常感谢您的帮助。

Answer 1

在src / images中打开一个文件夹，并将所有图片放在此处，然后使用StaticQuery中的过滤器搜索该文件夹中的所有图片。

import React from 'react';
import { StaticQuery, graphql } from 'gatsby';
import Img from 'gatsby-image';
import Carousel from 'react-bootstrap/Carousel';

export default () => (
 <StaticQuery
    query={graphql`
    query {
      allFile(filter: {relativeDirectory: {eq: "carousel"}}) {
        edges {
          node {
            childImageSharp {
              fluid(quality: 90) {
                ...GatsbyImageSharpFluid
              }
            }
          }
        }
      }
    }
  `} 
  render={data=> (
      <Carousel className="full-width-md d-none d-md-block">
      {data.allFile.edges.map(pic => 
      <Carousel.Item>
          <Img fluid={pic.node.childImageSharp.fluid}/>
      </Carousel.Item>
      )}
  </Carousel>
  )}
    />
);

如何在gatsby-image中使用react-bootsrap轮播？

1 个答案: