Interpolating strings in a graphQL query

Question

Interpolating strings in a graphQL query

Exploring the world of Gatsby and its graphQL query system for asset retrieval is a fascinating journey. I have successfully implemented a component called Image that fetches and displays images. However, I am facing a challenge in customizing the name of the image within this component.

Let me share with you the current working component:

const Image = () => (
  <StaticQuery
    query={graphql`
      query {
        // Fetching the image gatsby-astronaut.png
        placeholderImage: file(relativePath: { eq: "gatsby-astronaut.png" }) {
          childImageSharp {
            fluid(maxWidth: 300) {
              ...GatsbyImageSharpFluid
            }
          }
        }
      }
    `}
    render={data => <Img fluid={data.placeholderImage.childImageSharp.fluid} />}
  />
);

Now, let me show you my attempt to make the image name customizable:

const Image = ({ imgName }: { imgName: string }) => (
  <StaticQuery
    query={graphql`
      query {
        // Fetching the image based on dynamically passed imgName
        placeholderImage: file(relativePath: { eq: "${imgName}.png" }) {
          childImageSharp {
            fluid(maxWidth: 300) {
              ...GatsbyImageSharpFluid
            }
          }
        }
      }
    `}
    render={data => <Img fluid={data.placeholderImage.childImageSharp.fluid} />}
  />
);

However, this implementation results in the following error message related to the query:

Expected 1 argument, but received 2.ts(2554)

I would greatly appreciate any guidance or insights on how to achieve a customizable image name within the Gatsby Image component.

javascript typescript graphql gatsby

Answer 1

Answer №1

Here's a simple method I came across:

const Picture = props => {
  const data = useStaticQuery(graphql`
    query {
      primaryPic: file(relativePath: { eq: "firstImg.png" }) {
        childImageSharp {
          fluid(maxWidth: 300) {
            ...GatsbyImageSharpFluid
          }
        }
      }

      secondaryPic: file(
        relativePath: { eq: "secondImg.png" }
      ) {
        childImageSharp {
          fluid(maxWidth: 300) {
            ...GatsbyImageSharpFluid
          }
        }
      }
    }
  `)

  switch (props.name) {
    case "firstImg":
      return <Img fluid={data.primaryPic.childImageSharp.fluid} />
    case "secondImg":
      return <Img fluid={data.secondaryPic.childImageSharp.fluid} />
    default:
      return <Img />
  }
}

and implement it like this:

<Picture name="primaryPic" />

You can also enhance it to be typo-proof by creating an object with all the images you plan to showcase, for instance:

const Pictures = { primaryPic: 'primaryPic', secondaryPic: 'secondaryPic' }

and then utilize it in this way:

<Picture name={Pictures.primaryPic} />

and

...
switch (props.name) {
case Pictures.primaryPic:
...

Answer 2

Here's a simple method I came across:

const Picture = props => {
  const data = useStaticQuery(graphql`
    query {
      primaryPic: file(relativePath: { eq: "firstImg.png" }) {
        childImageSharp {
          fluid(maxWidth: 300) {
            ...GatsbyImageSharpFluid
          }
        }
      }

      secondaryPic: file(
        relativePath: { eq: "secondImg.png" }
      ) {
        childImageSharp {
          fluid(maxWidth: 300) {
            ...GatsbyImageSharpFluid
          }
        }
      }
    }
  `)

  switch (props.name) {
    case "firstImg":
      return <Img fluid={data.primaryPic.childImageSharp.fluid} />
    case "secondImg":
      return <Img fluid={data.secondaryPic.childImageSharp.fluid} />
    default:
      return <Img />
  }
}

and implement it like this:

<Picture name="primaryPic" />

You can also enhance it to be typo-proof by creating an object with all the images you plan to showcase, for instance:

const Pictures = { primaryPic: 'primaryPic', secondaryPic: 'secondaryPic' }

and then utilize it in this way:

<Picture name={Pictures.primaryPic} />

and

...
switch (props.name) {
case Pictures.primaryPic:
...

Answer 3

Answer №2

Refer to the documentation for static query

StaticQuery has similar capabilities to page query, including handling fragments. The key distinctions are:

Page queries can accept variables (via pageContext) but are limited to usage in page components

StaticQuery does not support variables (hence the term “static”), yet it can be utilized in any component, even on pages

Consider querying for the image's GatsbyImageSharpFluid within your page query and then passing it as the fluid prop directly to Gatsby image.

Answer 4

Refer to the documentation for static query

StaticQuery has similar capabilities to page query, including handling fragments. The key distinctions are:

Page queries can accept variables (via pageContext) but are limited to usage in page components

StaticQuery does not support variables (hence the term “static”), yet it can be utilized in any component, even on pages

Consider querying for the image's GatsbyImageSharpFluid within your page query and then passing it as the fluid prop directly to Gatsby image.

Answer 5

Answer №3

Thanks to ksav's answer, I was able to successfully implement this solution by utilizing pageQuery and accessing the desired images for a specific page through props.

Here's an example:

export const pageQuery = graphql`
  coverImage: file(relativePath: { eq: "coverImage.png" }) {
    childImageSharp {
      fluid(maxWidth: 600) {
        ...GatsbyImageSharpFluid_tracedSVG
      }
    }
  }
}`

By adding this to your page component, you will have access to the prop coverImage containing the image "coverImage.png". Hope this explanation is helpful!

Answer 6

Thanks to ksav's answer, I was able to successfully implement this solution by utilizing pageQuery and accessing the desired images for a specific page through props.

Here's an example:

export const pageQuery = graphql`
  coverImage: file(relativePath: { eq: "coverImage.png" }) {
    childImageSharp {
      fluid(maxWidth: 600) {
        ...GatsbyImageSharpFluid_tracedSVG
      }
    }
  }
}`

By adding this to your page component, you will have access to the prop coverImage containing the image "coverImage.png". Hope this explanation is helpful!

Answer 7

Answer №4

In my opinion, one area for improvement in Gatsby is its handling of imported images. While @ramzesenok's answer is helpful when using the Gatsby framework with graphql, there is also the option to revert back to traditional React by following a similar process:

import React from 'react';
import gatsbyAstronaut from './gatsby-astronaut.png';

and then utilize it like this.

<img src={gatsbyAstronaut} alt="Gatsby Astronaut" />

Although this method may add some weight to your project, the import step is necessary for webpack to bundle the image correctly.

Answer 8

In my opinion, one area for improvement in Gatsby is its handling of imported images. While @ramzesenok's answer is helpful when using the Gatsby framework with graphql, there is also the option to revert back to traditional React by following a similar process:

import React from 'react';
import gatsbyAstronaut from './gatsby-astronaut.png';

and then utilize it like this.

<img src={gatsbyAstronaut} alt="Gatsby Astronaut" />

Although this method may add some weight to your project, the import step is necessary for webpack to bundle the image correctly.

Interpolating strings in a graphQL query

Answer №1

Answer №2

Answer №3

Answer №4

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