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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

Administrators can change the fixed height of cards that are in a 12-column grid.

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
    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
    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
    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
    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)
    Copy to Clipboard Toggle word wrap
    Placeholder
    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
    dynamicPlugins:
      frontend:
        red-hat-developer-hub.backstage-plugin-dynamic-home-page:
          mountPoints:
            - mountPoint: home.page/cards
              importName: CatalogStarredEntitiesCard
    Copy to Clipboard Toggle word wrap
    Featured docs
    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 components, APIs, resources, and so on.
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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12.2. Defining the layout of the Red Hat Developer Hub Home page

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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