带有以编程方式创建的页面问题的 Gatsby-plugin-image

问题描述

我正在 gatsby 中从 MD 文件以编程方式创建页面。我遇到的问题是，当页面加载时，我正在使用 from gatsby-plugin-image 从所述 MD 文件的 frontmatter 中提取图像，但未呈现 img 并且我得到错误 gatsby-plugin-image] Missing图片道具

这是文件和graphql设置

  echo '${params.FullHTML}'
                echo '${params.ParaMETERS}'
                echo "${params.ParaMETERS}"
                echo "${params.FullHTML}"

我尝试了一些不同的道具，例如改变

src={post.frontmatter.image} 到 src={image},

和改变

const image = getimage(post.image) 到 const image = getimage(post.frontmatter.image)

正如你所看到的，标题工作正常，所以它必须是图像的问题。

同样，当我在 graphiql 中使用相同的查询时，它确实返回图像。

解决方法

您的形象属于 frontmatter，因此根据您的尝试，您从未尝试过：

import React from "react";
import { graphql } from "gatsby";
import Layout from "../components/Layout";
import {Button,Card,CardBody,CardTitle } from "reactstrap";
import { GatsbyImage,getImage } from "gatsby-plugin-image";
import "../styles/main.scss";

const ProductPage = ({ data }) => {
  const post = data.markdownRemark;
  const image = getImage(post.image)
  return (
    <Layout>
      <div>
        <Card>
          <GatsbyImage
            className="card-image-top"
            src={post.frontmatter.image.childImageSharp.gatsbyImageData}
            alt={post.description}
            placeholder="blurred"
            width={500}
            layout="constraint"
          />
          <CardTitle>{post.frontmatter.title}</CardTitle>
          <CardBody>
            <div dangerouslySetInnerHTML={{ __html: post.html }} />
            <Button 
             className="btn btn-outline-secondary float-right" color="light">Buy</Button>
          </CardBody>
        </Card>
      </div>
    </Layout>
  );
};

export const query = graphql`
  query($slug: String!) {
    markdownRemark(fields: { slug: { eq: $slug } }) {
      html
      frontmatter {
        title
        description
        image {
          childImageSharp {
            gatsbyImageData(
              width: 500
              placeholder: BLURRED
              formats: [AUTO]
            )
          }
        }
      }
    }
  }
`;

export default ProductPage;

注意 post.frontmatter.image.childImageSharp.gatsbyImageData 中的嵌套

,

import React from "react";
import { graphql } from "gatsby";
import Layout from "../components/Layout";
import {Button,getImage } from "gatsby-plugin-image";
import "../styles/main.scss";

const ProductPage = ({ data }) => {
  const post = data.markdownRemark;
  const image = getImage(post.image)
  return (
    <Layout>
      <div>
        <Card>
          <GatsbyImage
            className="card-image-top"
            src={post.frontmatter.image.childImageSharp.gatsbyImageData} <= should be using "IMAGE" not "SRC" SRC is used for <StaticImage> <GatsbyImage> should use "IMAGE" to call it.
            alt={post.description}
            placeholder="blurred"
            width={500}
            layout="constraint"
          />
          <CardTitle>{post.frontmatter.title}</CardTitle>
          <CardBody>
            <div dangerouslySetInnerHTML={{ __html: post.html }} />
            <Button 
             className="btn btn-outline-secondary float-right" color="light">Buy</Button>
          </CardBody>
        </Card>
      </div>
    </Layout>
  );
};