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Chapter 12. Customizing the Home page

When using the app-config, you can do the following:

  • Customize and extend the default Home page layout with additional cards that appear based on the plugins you have installed and enabled.
  • Change quick access links.

  • Add, reorganize, and remove the following available cards:

    • Search bar
    • Quick access
    • Headline
    • Markdown
    • Placeholder
    • Catalog starred entities
    • Featured docs

12.1. Customizing the Home page cards
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As an administrator, you can customize the layout and content of the Home page to create a tailored user experience. This includes integrating various specialized cards into the primary view.

The Home page layout uses a 12-column grid system. You can precisely define the position (x), width (w), and height (h) for each card across multiple screen breakpoints:

  • Extra-large (xl)
  • Large (lg)
  • Medium (md)
  • Small (sm)
  • Extra-small (xs)
  • Extra-extra-small (xxs)

The default Home page is as shown in the following app-config.yaml file configuration: 

dynamicPlugins:
  frontend:
    red-hat-developer-hub.backstage-plugin-dynamic-home-page:
      dynamicRoutes:
        - path: /
          importName: DynamicHomePage
      mountPoints:
        - mountPoint: home.page/cards
          importName: SearchBar
          config:
            layouts:
              xl: { w: 10, h: 1, x: 1 }
              lg: { w: 10, h: 1, x: 1 }
              md: { w: 10, h: 1, x: 1 }
              sm: { w: 10, h: 1, x: 1 }
              xs: { w: 12, h: 1 }
              xxs: { w: 12, h: 1 }
        - mountPoint: home.page/cards
          importName: QuickAccessCard
          config:
            layouts:
              xl: { w: 7, h: 8 }
              lg: { w: 7, h: 8 }
              md: { w: 7, h: 8 }
              sm: { w: 12, h: 8 }
              xs: { w: 12, h: 8 }
              xxs: { w: 12, h: 8 }
        - mountPoint: home.page/cards
          importName: CatalogStarredEntitiesCard
          config:
            layouts:
              xl: { w: 5, h: 4, x: 7 }
              lg: { w: 5, h: 4, x: 7 }
              md: { w: 5, h: 4, x: 7 }
              sm: { w: 12, h: 4 }
              xs: { w: 12, h: 4 }
              xxs: { w: 12, h: 4 }
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Prerequisites

  • You have administrative access and can modify the app-config.yaml file for dynamic plugin configurations.

Procedure

  • Configure different cards for your Home page in Red Hat Developer Hub as shown in the following code:

    Search

    You can use the SearchBar card to provide essential search functionality directly on the Home page. 

    dynamicPlugins:
  frontend:
    red-hat-developer-hub.backstage-plugin-dynamic-home-page:
      mountPoints:
        - mountPoint: home.page/cards
          importName: SearchBar
          config:
            layouts:
              xl: { w: 10, h: 1, x: 1 }
              lg: { w: 10, h: 1, x: 1 }
              md: { w: 10, h: 1, x: 1 }
              sm: { w: 10, h: 1, x: 1 }
              xs: { w: 12, h: 1 }
              xxs: { w: 12, h: 1 }
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    Expand
    Table 12.1. Available props
    PropDefaultDescription

    path

    /search

    Override the linked search path if needed

    queryParam

    query

    Override the search query parameter name if needed

    Quick access

    You can use the QuickAccessCard card to function as a customizable shortcut panel. 

    dynamicPlugins:
  frontend:
    red-hat-developer-hub.backstage-plugin-dynamic-home-page:
      mountPoints:
        - mountPoint: home.page/cards
          importName: QuickAccessCard
          config:
            layouts:
              xl: { h: 8 }
              lg: { h: 8 }
              md: { h: 8 }
              sm: { h: 8 }
              xs: { h: 8 }
              xxs: { h: 8 }
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    Expand
    Table 12.2. Available props
    PropDefaultDescription

    title

    Quick Access

    Override the linked search path if needed

    path

    none

    Override the search query parameter name if needed

    Headline

    You can use the Headline card to display important information. 

    dynamicPlugins:
  frontend:
    red-hat-developer-hub.backstage-plugin-dynamic-home-page:
      mountPoints:
        - mountPoint: home.page/cards
          importName: Headline
          config:
            layouts:
              xl: { h: 1 }
              lg: { h: 1 }
              md: { h: 1 }
              sm: { h: 1 }
              xs: { h: 1 }
              xxs: { h: 1 }
            props:
              title: Important info
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    Expand
    Table 12.3. Available props
    PropDefaultDescription

    title

    none

    Title

    Markdown

    You can use the Markdown card to display richly formatted content directly within the Home page layout. This card uses Markdown syntax to present structured information, such as lists and links (documentation and plugin repositories). 

    dynamicPlugins:
  frontend:
    red-hat-developer-hub.backstage-plugin-dynamic-home-page:
      mountPoints:
        - mountPoint: home.page/cards
          importName: MarkdownCard
          config:
            layouts:
              xl: { w: 6, h: 4 }
              lg: { w: 6, h: 4 }
              md: { w: 6, h: 4 }
              sm: { w: 6, h: 4 }
              xs: { w: 6, h: 4 }
              xxs: { w: 6, h: 4 }
            props:
              title: Company links
              content: |
                ### RHDH
                * [Website](https://developers.redhat.com/rhdh/overview)
                * [Documentation](https://docs.redhat.com/en/documentation/red_hat_developer_hub/)
                * [Janus Plugins](https://github.com/janus-idp/backstage-plugins)
                * [Backstage Community Plugins](https://github.com/backstage/community-plugins)
                * [RHDH Plugins](https://github.com/redhat-developer/rhdh-plugins)
                * [RHDH Showcase](https://github.com/redhat-developer/rhdh)
        - mountPoint: home.page/cards
          importName: Markdown
          config:
            layouts:
              xl: { w: 6, h: 4, x: 6 }
              lg: { w: 6, h: 4, x: 6 }
              md: { w: 6, h: 4, x: 6 }
              sm: { w: 6, h: 4, x: 6 }
              xs: { w: 6, h: 4, x: 6 }
              xxs: { w: 6, h: 4, x: 6 }
            props:
              title: Important company links
              content: |
                ### RHDH
                * [Website](https://developers.redhat.com/rhdh/overview)
                * [Documentation](https://docs.redhat.com/en/documentation/red_hat_developer_hub/)
                * [Documentation](https://docs.redhat.com/en/documentation/red_hat_developer_hub/)
                * [Janus Plugins](https://github.com/janus-idp/backstage-plugins)
                * [Backstage Community Plugins](https://github.com/backstage/community-plugins)
                * [RHDH Plugins](https://github.com/redhat-developer/rhdh-plugins)
                * [RHDH Showcase](https://github.com/redhat-developer/rhdh)
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    Placeholder

    You can use the Placeholder card as a utility element for reserving space or for layout testing on the Home page. 

    dynamicPlugins:
  frontend:
    red-hat-developer-hub.backstage-plugin-dynamic-home-page:
      mountPoints:
        - mountPoint: home.page/cards
          importName: Placeholder
          config:
            layouts:
              xl: { w: 1, h: 1 }
              lg: { w: 1, h: 1 }
              md: { w: 1, h: 1 }
              sm: { w: 1, h: 1 }
              xs: { w: 1, h: 1 }
              xxs: { w: 1, h: 1 }
            props:
              showBorder: true
              debugContent: '1'
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    Catalog starred entities

    You can use the CatalogStarredEntitiesCard card to provide a dedicated space on the Home page for users to view catalog entities that they have marked as starred. 

    dynamicPlugins:
  frontend:
    red-hat-developer-hub.backstage-plugin-dynamic-home-page:
      mountPoints:
        - mountPoint: home.page/cards
          importName: CatalogStarredEntitiesCard
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    Featured docs

    You can use the FeaturedDocsCard card as a way to highlight specific documentation within Red Hat Developer Hub, as it is available for deployment on the Home page. 

    dynamicPlugins:
  frontend:
    red-hat-developer-hub.backstage-plugin-dynamic-home-page:
      mountPoints:
        - mountPoint: home.page/cards
          importName: FeaturedDocsCard
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    EntitySection

    You can use the EntitySection card to create a visually engaging section that highlights catalog entities of various kinds, such as Component, API, Resource, and System. 

    dynamicPlugins:
  frontend:
    red-hat-developer-hub.backstage-plugin-dynamic-home-page:
      mountPoints:
        - mountPoint: home.page/cards
          importName: EntitySection
          config:
            layouts:
              xl: { w: 12, h: 6 }
              lg: { w: 12, h: 6 }
              md: { w: 12, h: 6 }
              sm: { w: 12, h: 6 }
              xs: { w: 12, h: 6 }
              xxs: { w: 12, h: 14.5 }
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    OnboardingSection

    You can use the OnboardingSection card to quickly discover learning resources within RHDH. 

    dynamicPlugins:
  frontend:
    red-hat-developer-hub.backstage-plugin-dynamic-home-page:
      mountPoints:
        - mountPoint: home.page/cards
          importName: OnboardingSection
          config:
            layouts:
              xl: { w: 12, h: 5 }
              lg: { w: 12, h: 5 }
              md: { w: 12, h: 5 }
              sm: { w: 12, h: 5 }
              xs: { w: 12, h: 7 }
              xxs: { w: 12, h: 12 }
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    TemplateSection

    You can use the TemplateSection card to quickly explore and initiate software templates in RHDH. 

    dynamicPlugins:
  frontend:
    red-hat-developer-hub.backstage-plugin-dynamic-home-page:
      mountPoints:
        - mountPoint: home.page/cards
          importName: TemplateSection
          config:
            layouts:
              xl: { w: 12, h: 5 }
              lg: { w: 12, h: 5 }
              md: { w: 12, h: 5 }
              sm: { w: 12, h: 5 }
              xs: { w: 12, h: 5 }
              xxs: { w: 12, h: 14 }
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The Home page uses a 12-column grid to position your cards. You can use the optimal parameters to define the layout of your Developer Hub Home page.

Prerequisites

  • Include the following optimal parameters in each of your breakpoints:

    • width (w)
    • height (h)
    • position (x and y)

Procedure

  • Configure your Developer Hub app-config.yaml configuration file by choosing one of the following options:

    • Use the full space on smaller windows and half of the space on larger windows as follows: 
dynamicPlugins:
  frontend:
    red-hat-developer-hub.backstage-plugin-dynamic-home-page:
      mountPoints:
        - mountPoint: home.page/cards
          importName: Placeholder
          config:
            layouts:
              xl: { w: 6, h: 2 }
              lg: { w: 6, h: 2 }
              md: { w: 6, h: 2 }
              sm: { w: 12, h: 2 }
              xs: { w: 12, h: 2 }
              xxs: { w: 12, h: 2 }
            props:
              showBorder: true
              debugContent: a placeholder
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  • Show the cards side by side by defining the x parameter as shown in the following example: 
dynamicPlugins:
  frontend:
    red-hat-developer-hub.backstage-plugin-dynamic-home-page:
      mountPoints:
        - mountPoint: home.page/cards
          importName: Placeholder
          config:
            layouts:
              xl: { w: 6, h: 2 }
              lg: { w: 6, h: 2 }
              md: { w: 6, h: 2 }
              sm: { w: 12, h: 2 }
              xs: { w: 12, h: 2 }
              xxs: { w: 12, h: 2 }
            props:
              showBorder: true
              debugContent: left
        - mountPoint: home.page/cards
          importName: Placeholder
          config:
            layouts:
              xl: { w: 6, h: 2, x: 6 }
              lg: { w: 6, h: 2, x: 6 }
              md: { w: 6, h: 2, x: 6 }
              sm: { w: 12, h: 2, x: 0 }
              xs: { w: 12, h: 2, x: 0 }
              xxs: { w: 12, h: 2, x: 0 }
            props:
              showBorder: true
              debugContent: right
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However, you can see a second card below this card by default.

  • Show the cards in three columns by defining the x parameter as shown in the following example: 
dynamicPlugins:
  frontend:
    red-hat-developer-hub.backstage-plugin-dynamic-home-page:
      mountPoints:
        - mountPoint: home.page/cards
          importName: Placeholder
          config:
            layouts:
              xl: { w: 4, h: 2 }
              lg: { w: 4, h: 2 }
              md: { w: 4, h: 2 }
              sm: { w: 6, h: 2 }
              xs: { w: 12, h: 2 }
              xxs: { w: 12, h: 2 }
            props:
              showBorder: true
              debugContent: left
        - mountPoint: home.page/cards
          importName: Placeholder
          config:
            layouts:
              xl: { w: 4, h: 2, x: 4 }
              lg: { w: 4, h: 2, x: 4 }
              md: { w: 4, h: 2, x: 4 }
              sm: { w: 6, h: 2, x: 6 }
              xs: { w: 12, h: 2 }
              xxs: { w: 12, h: 2 }
            props:
              showBorder: true
              debugContent: center
        - mountPoint: home.page/cards
          importName: Placeholder
          config:
            layouts:
              xl: { w: 4, h: 2, x: 8 }
              lg: { w: 4, h: 2, x: 8 }
              md: { w: 4, h: 2, x: 8 }
              sm: { w: 6, h: 2 }
              xs: { w: 12, h: 2 }
              xxs: { w: 12, h: 2 }
            props:
              showBorder: true
              debugContent: right
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