Override Components

Usage

To use this feature, the website must mimic the folder structure of the Gatsby theme and list the files in the overrides folder that should be overridden.

src
└── @commercetools-docs
    └── gatsby-theme-docs
        └── overrides
            ├── markdown-components.js
            ├── page-header-side.js
            └── use-additional-site-data.js

Note that Gatsby shadowing works with any file in the theme. However, the theme provides an explicit stable extension point that is the overrides folder. Users of the theme should use this extension point only instead of relying on theme-internal file system paths that can potentially change any time.

Available overrides

• markdown-components: allows to pass React components to be injected in the content pages.

  import MyCustomComponent from '../../../components/my-custom-component';
  
  const markdownComponents = {
    MyCustomComponent,
  };
  export default markdownComponents;

  With this, in the *.mdx content pages the <MyCustomComponent> is available to use.

• page-header-side: allows to render something in the top-right corner of a content page. Any valid React component should be default exported.

• use-additional-site-data: allows to return custom site metadata using React hooks. The data is merged with the default siteMetadata of the Gatsby theme and can be accessed using the useSiteData hook.

  import { useStaticQuery, graphql } from 'gatsby';
  
  // This website defines the `repositoryUrl` value in the `siteMetadata` config.
  // Therefore, we query those extra values and return them.
  const useAdditionalSiteData = () => {
    const data = useStaticQuery(graphql`
      query GetAdditionalSiteData {
        site {
          siteMetadata {
            repositoryUrl
          }
        }
      }
    `);
  
    return data.site.siteMetadata;
  };
  export default useAdditionalSiteData;