How to get Gatsby Images based on results of PageQuery? - graphql

Question

I'd like to do something like the following so I can get Gatsby Images dynamically:
const image = 'gastby-astronaut.png';
export const imageQuery = graphql`
{ allImageSharp (
filter: {
fluid: {
originalName: {
regex: "/${image}/"
}
}
}
){
edges {
node {
fluid {
originalName
}
}
}
}
}
`;
However, I can't figure out how to connect this query to an initial query that would get the 'gatsby-astronaut.png', or perform this query from a subcomponent with a . I get this error when I try this:
Error: BabelPluginRemoveGraphQL: String interpolations are not allowed
in graphql fragments. Included fragments should be referenced as
`...MyModule_foo`.
Any suggestions on the proper way to return Gatsby Images dynamically?

Answer 1

Ah, yeah Gatsby extracts GraphQL queries from your pages through static analysis: they load the file as text, parse it, and extract the query, all before the actual file gets executed. This means that your typical tagged-template literal functionality isn't there.
The only way to filter is through context provided when createPage is called from gatsby-node.js. I.e. if you do this:
exports.createPages = ({ graphql, actions }) =>
graphql(`some query here`).then(result => {
actions.createPage({
path: "/output-path/",
component: path.resolve(`./src/templates/your_template.jsx`),
context: { image: result.data.yourImage },
})
})
Then you can do this in your page query:
query SomePage($image: String!) {
allImageSharp (
filter: {
fluid: {
originalName: {
regex: $image
}
}
}
){
edges {
node {
fluid {
originalName
}
}
}
}
}

Answer 2

Here's a solution I came up with... pretty janky, but it works:
import PropTypes from 'prop-types';
import React from 'react';
import Img from 'gatsby-image';
import { useStaticQuery, graphql } from 'gatsby';
const Image = ({ imageYouWant }) => {
const data = useStaticQuery(
graphql`
query allTheImagesQuery{
allImageSharp {
edges {
node {
fluid(maxWidth:1000) {
...GatsbyImageSharpFluid
originalName
}
}
}
}
}`,
);
const TheImageYouWant = data.allImageSharp.edges
.filter(edge => edge.node.fluid.originalName === imageYouWant)
.map(myImage => <Img fluid={myImage.node.fluid} />);
return (
<>
{ TheImageYouWant }
</>
);
};
Image.propTypes = {
imageYouWant: PropTypes.string,
};
Image.defaultProps = {
imageYouWant: '',
};
export default Image;