Querying all images in folder using GraphQL

问题

I am currently learning Gatsby.js and GraphQL as a supplementary technology and got stuck with querying. I want to query all images from a folder, map trough them and display them in a react component as a grid. I am using gatsby-source-filesystem but can't figure out, how to address specifically that folder and get all images from it.

My plugin set up for source-filesystem looks like this.

{
  resolve: `gatsby-source-filesystem`,
  options: {
    path: `${__dirname}/src/posts`,
    name: 'posts',
  },
},
{
  resolve: `gatsby-source-filesystem`,
  options: {
    name: `images`,
    path: `${__dirname}/src/assets/images`,
  },
},
{
  resolve: `gatsby-source-filesystem`,
  options: {
    name: `photos`,
    path: `${__dirname}/src/assets/photos`,
  },
},

I have my images in src/assets/photos

Thanks for any help!

回答1:

You can select specific folders using filters in graphql.

Try something like this:

query AssetsPhotos {
  allFile(filter: {extension: {regex: "/(jpg)|(jpeg)|(png)/"}, relativeDirectory: {eq: "photos"}}) {
    edges {
      node {
        id
        name
      }
    }
  }
}

Where eq: photos should be changed to the relative directory result you get for the files you want to target when you go to GraphiQL and run a query on allFile.

来源：https://stackoverflow.com/questions/51349801/querying-all-images-in-folder-using-graphql