Registering Home Page options

Since Live 3.32.0

Live's home page can be redefined in the admin "System and Display Settings" screen, under the "UI Configurations" section. To see more details about the configuration, see Home Page Customization

Home Page options can be registered by other plugins using the LiveApi.HomePages registry in the front end. A home page option can basically be one of three kinds:

• a redirect to a page that already exists on Live's menu, in which case the URL to that page must be provided when registering the home page option

• a page that renders a custom component, which must be provided when registering the home page option

• a redirect to a page of an instance of an entity (such as a specific dashboard or lookup table), in which case some endpoints and mapping functions related to the entity must be provided when registering the home page option

The HomePage type of a home page option is thus a union of the three types representing these kinds, defined below:

// base interface with some common properties
interface HomePageBase {
    key: string
    label: string
    existsOnMenu: boolean
    permissions?: string[]
}

// renders custom component provided in the Page property
interface CustomComponentPage extends HomePageBase {
    existsOnMenu: false
    Page: React.ComponentType
}

// redirects to page that already exists on Live's menu
interface ExistingPage extends HomePageBase {
    existsOnMenu: true
    url: string
}

// redirects to the existing page of a specific instance of an entity
interface EntityPage extends HomePageBase {
    existsOnMenu: true
    entityData: {
        endpoint: string
        idToEndpoint: (id: string) => string
        resultsToLabelAndValue: (
            endpointResults: unknown
        ) => {
            label: string
            value: string
        }[]
        idToUrl: (id: string) => string
        hasPermission: (
            entity: unknown,
            successFetching: boolean,
            userPermissions: string[],
            userPerspectiveIds: string[] | 'all',
            error?: unknown
        ) => boolean
    }
}

// final union type
type HomePage = CustomComponentPage | ExistingPage | EntityPage

The parameters are explained in more detail in the table below:

Parameter	Description
key	a unique key to identify this home page option
label	a textual label representing this home page option, shown when selecting the option
existsOnMenu	a flag indicating whether the home page option is a page that already exists and can be accessed on Live's menu
permissions	an optional list of permission names; to be able to access this home page option, the user must have at least one of them; the names should be in uppercase as registered by Live or plugins (e.g.: DASHBOARDS, VIEW_MONITORING)
url	if the page already exists on Live's menu, the URL to it
Page	if the page does not exist on Live's menu, the page's React component

The entityData parameter must be provided when registering an entity as the home page option (e.g.: dashboards). Its parameters are explained below:

Parameter	Description
endpoint	the endpoint that should be called to get the list of all instances of the entity (e.g.: /rest/dashboard returns the data for all dashboards)
idToEndpoint	a function that receives an id and returns the endpoint that should be called to get the entity instance with that id
resultsToLabelAndValue	a function that receives the results from calling the endpoint and formats them to a list of objects with a label (usually the name of the entity instance or some equivalent property) and value (the id of the instance or some equivalent property)
idToUrl	a function that receives an id and returns the URL of the page of the entity instance with that id
hasPermission	a function that receives the object with an entity instance's data, along with a list with the names of the logged user's permissions and another with the ids of the perspectives they can access (or the string all when the user can access all of them), and returns a boolean value indicating whether they have permission to access that entity instance's page; the successFetching and error arguments are also provided to signal if there was an error when trying to fetch the entity instance's data

Examples

The first example below shows how to register an existing page as a home page option:

import { LiveApi } from 'live/lib/api'

// register Live's 'Monitoring' page
LiveApi.HomePages.register({
    key: 'monitoring',
    label: 'Monitoring',
    existsOnMenu: true,
    url: '/#/monitoring',
    permissions: ['VIEW_MONITORING', 'MANAGE_MONITORING']
})

The next example shows how to register a new page as a home page option:

app.js

import { LiveApi } from 'live/lib/api'

import NewHomePage from './NewHomePage'

// register the new home page component imported
LiveApi.HomePages.register({
    key: 'new-home-page',
    label: 'New Home Page',
    existsOnMenu: false,
    Page: NewHomePage
})

NewHomePage.tsx

Finally, the last example shows how to register an entity (lookup tables in the example) as a home page option, which would allow a specific lookup table's page to be selected as a home page, as shown in the figure after the code.

import { LiveApi } from 'live/lib/api'

LiveApi.HomePages.register({
    key: 'lookup',
    label: 'Lookup table',
    existsOnMenu: true,
    entityData: {
        endpoint: '/rest/lookup',
        idToEndpoint: id => `/rest/lookup/${id}`,
        resultsToLabelAndValue: data => (
            data?.data?.map(lookup => ({
                label: lookup.name,
                value: lookup.id
            }))
        ) || [],
        idToUrl: id => `/#/config/lookup-table/${id}`,
        hasPermission: () => true
    }
})

Choosing a lookup table as a home page