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就像本教程在 Markdown 帖子和页面中使用图像一样；我正在尝试将博客文章的图片从我的 markdown(frontmatter) 加载到我的模板标题

featuredImage: "../images/hiplife.jpg"

我的模板组件如下所示：

import React from "react"
import { graphql } from "gatsby"
import { Img } from "gatsby-image"
import Layout from "../../components/layout/layout"
import Navbar from "../../components/navbar/navbar"
import styles from "./blogposts.module.css"
import kasahare from "../../images/pwd.png"

export default ({ data }) => {
  let post = data.markdownRemark
  let featuredImgFluid = post.frontmatter.featuredImage.childImageSharp.fluid
  return (
    <Layout>
      <Navbar />
      <div className={styles.Header}>
        <Img fluid={featuredImgFluid} />
      </div>

      <div className={styles.BlogPosts}>
        <div className={styles.BlogPostsHolder}>
          <div className={styles.authorside}>
            <div className={styles.author}>
              <div>
                <img className={styles.authorImg} src={kasahare} alt="Logo" />
              </div>
              <div>{post.author}</div>
              <div>{post.date}</div>
              <div className={styles.tag}>{post.tag}</div>
            </div>
          </div>
          <div
            className={styles.blogpostcontent}
            dangerouslySetInnerHTML={{ __html: data.markdownRemark.html }}
          />
        </div>
      </div>
    </Layout>
  )
}

export const pageQuery = graphql`
  query($path: String!) {
    markdownRemark(frontmatter: { path: { eq: $path } }) {
      html
      frontmatter {
        date(formatString: "MMMM DD, YYYY")
        author
        title
        tag
        featuredImage {
          childImageSharp {
            fluid(maxWidth: 1050) {
              base64
              aspectRatio
              src
              srcSet
              sizes
            }
          }
        }
      }
    }
  }
`

但我不断收到这个错误。

错误：元素类型无效：应为字符串（对于内置组件）或类/函数（对于复合组件），但得到：未定义。

我的 gatsby-config 看起来像

module.exports = {
  /* Your site config here */
  siteMetadata: {
    title: "HipLife",
    description: "The blog for hiplife culture",
    author: "kaf",
  },
  plugins: [
    `gatsby-plugin-sharp`,
    `gatsby-transformer-sharp`,
    `gatsby-transformer-remark`,
    {
      resolve: `gatsby-source-filesystem`,
      options: {
        name: `markdown`,
        path: `${__dirname}/src/markdown`,
      },
    },
    {
      resolve: `gatsby-source-filesystem`,
      options: {
        name: `images`,
        path: `${__dirname}/src/images/`,
      },
    },
  ],
}

还有我的 gatsby-node

const path = require(`path`)

exports.createPages = async ({ actions, graphql, reporter }) => {
  const { createPage } = actions

  const blogPostTemplate = path.resolve(`src/templates/blogposts/blogposts.js`)

  const result = await graphql(`
    {
      allMarkdownRemark(
        sort: { order: DESC, fields: [frontmatter___date] }
        limit: 1000
      ) {
        edges {
          node {
            frontmatter {
              path
            }
          }
        }
      }
    }
  `)

  // Handle errors
  if (result.errors) {
    reporter.panicOnBuild(`Error while running GraphQL query.`)
    return
  }

  result.data.allMarkdownRemark.edges.forEach(({ node }) => {
    createPage({
      path: node.frontmatter.path,
      component: blogPostTemplate,
      context: {}, // additional data can be passed via context
    })
  })
}
4

1 回答 1

1

发现我的 gatsby-image 导入周围有花括号import { Img } from "gatsby-image"

删除它们让它工作。谢谢

于 2020-04-20T21:24:59.353 回答