Add <RecordRepresentation> to streamline rendering a record as string

docs/RecordRepresentation.md

@@ -0,0 +1,67 @@
+---
+layout: default
+title: "The RecordRepresentation Component"
+---
+
+Render the record representation, leveraging the [`recordRepresentation`](./Resource.md#recordrepresentation) prop of the parent `<Resource>` component.
+
+You can also uses its hook version: [`<useGetRecordRepresentation>`](./useGetRecordRepresentation.md).
+
+## Usage
+
+```tsx
+// in src/posts/PostBreadcrumbs.tsx
+import * as React from 'react';
+import { Breadcrumbs, Typography } from '@mui/material';
+import { Link, RecordRepresentation } from 'react-admin';
+
+export const PostBreadcrumbs = () => {
+    return (
+        <div role="presentation">
+            <Breadcrumbs aria-label="breadcrumb">
+                <Link underline="hover" color="inherit" to="/">
+                    Home
+                </Link>
+                <Link underline="hover" color="inherit" to="/posts">
+                    Posts
+                </Link>
+                <Typography color="text.primary">
+                    <RecordRepresentation />
+                </Typography>
+            </Breadcrumbs>
+        </div>
+    );
+}
+
+// in src/posts/PostEdit.tsx
+import { EditBase, EditView, SimpleForm, TextInput } from 'react-admin';
+import { PostBreadcrumbs } from './PostBreadcrumbs';
+
+const PostEdit = () => (
+    <EditBase>
+        <PostBreadcrumbs />
+        <EditView>
+            <SimpleForm>
+                <TextInput source="title" />
+            </SimpleForm>
+        </EditView>
+    </EditBase>
+)
+```
+
+## Props
+
+Here are all the props you can set on the `<RecordRepresentation>` component:
+
+| Prop       | Required | Type       | Default                                    | Description           |
+| ---------- | -------- | ---------- | ------------------------------------------ | ----------------------|
+| `record`   | Optional | `RaRecord` | Record from the parent `RecordContext`     | The record to display |
+| `resource` | Optional | `string`   | Resource from the parent `ResourceContext` | The record's resource |
+
+## `record`
+
+The record to display. Defaults to the record from the parent `RecordContext`.
+
+## `resource`
+
+The record's resource. Defaults to the resource from the parent `ResourceContext`.

docs/Reference.md

@@ -127,6 +127,7 @@ title: "Index"
 
 **- R -**
 * [`<RadioButtonGroupInput>`](./RadioButtonGroupInput.md)
+* [`<RecordRepresentation>`](./RecordRepresentation.md)
 * [`<ReferenceArrayField>`](./ReferenceArrayField.md)
 * [`<ReferenceArrayInput>`](./ReferenceArrayInput.md)
 * [`<ReferenceField>`](./ReferenceField.md)

docs/Resource.md

@@ -226,6 +226,8 @@ For instance, to change the default representation of "users" records to render
 - a function (e.g. `(record) => record.title`) to specify a custom string representation
 - a React component (e.g. `<MyCustomRecordRepresentation />`). In such components, use [`useRecordContext`](./useRecordContext.md) to access the record.
 
+If you want to display this record representation somewhere, you can leverage the [`useGetRecordRepresentation`](./useGetRecordRepresentation.md) hook or the [`<RecordRepresentation>`](./RecordRepresentation.md) component.
+
 ## `hasCreate`, `hasEdit`, `hasShow`
 
 Some components, like [`<CreateDialog>`](./CreateDialog.md), [`<EditDialog>`](./EditDialog.md) or [`<ShowDialog>`](./ShowDialog.md) need to declare the CRUD components outside of the `<Resource>` component. In such cases, you can use the `hasCreate`, `hasEdit` and `hasShow` props to tell react-admin which CRUD components are available for a given resource.

docs/navigation.html

@@ -243,6 +243,8 @@
   <li {% if page.path == 'Confirm.md' %} class="active" {% endif %}><a class="nav-link" href="./Confirm.html"><code>&lt;Confirm&gt;</code></a></li>
   <li {% if page.path == 'Buttons.md' %} class="active" {% endif %}><a class="nav-link" href="./Buttons.html">Buttons</a></li>
   <li {% if page.path == 'UpdateButton.md' %} class="active" {% endif %}><a class="nav-link" href="./UpdateButton.html"><code>&lt;UpdateButton&gt;</code></a></li>
+  <li {% if page.path == 'RecordRepresentation.md' %} class="active" {% endif %}><a class="nav-link" href="./RecordRepresentation.html"><code>&lt;RecordRepresentation&gt;</code></a></li>
+  <li {% if page.path == 'useGetRecordRepresentation.md' %} class="active" {% endif %}><a class="nav-link" href="./useGetRecordRepresentation.html"><code>useGetRecordRepresentation</code></a></li>
 </ul>
 
 <ul><div>Realtime</div>

docs/useGetRecordRepresentation.md

@@ -0,0 +1,65 @@
+---
+layout: default
+title: "The useGetRecordRepresentation Component"
+---
+
+Returns a function that get the record representation, leveraging the [`recordRepresentation`](./Resource.md#recordrepresentation) prop of the parent `<Resource>` component.
+
+You can also uses its component version: [`<RecordRepresentation>`](./RecordRepresentation.md).
+
+## Usage
+
+```tsx
+// in src/posts/PostBreadcrumbs.tsx
+import * as React from 'react';
+import { Breadcrumbs, Typography } from '@mui/material';
+import { Link, useGetRecordRepresentation, useRecordContext, useResourceContext } from 'react-admin';
+
+export const PostBreadcrumbs = () => {
+    const record = useRecordContext(props);
+    const resource = useResourceContext(props);
+    const getRecordRepresentation = useGetRecordRepresentation(resource);
+    return (
+        <div role="presentation">
+            <Breadcrumbs aria-label="breadcrumb">
+                <Link underline="hover" color="inherit" to="/">
+                    Home
+                </Link>
+                <Link underline="hover" color="inherit" to="/posts">
+                    Posts
+                </Link>
+                <Typography color="text.primary">
+                    {getRecordRepresentation(record)}
+                </Typography>
+            </Breadcrumbs>
+        </div>
+    );
+}
+
+// in src/posts/PostEdit.tsx
+import { EditBase, EditView, SimpleForm, TextInput } from 'react-admin';
+import { PostBreadcrumbs } from './PostBreadcrumbs';
+
+const PostEdit = () => (
+    <EditBase>
+        <PostBreadcrumbs />
+        <EditView>
+            <SimpleForm>
+                <TextInput source="title" />
+            </SimpleForm>
+        </EditView>
+    </EditBase>
+)
+```
+
+## Options
+
+Here are all the options you can set on the `useGetRecordRepresentation` hook:
+
+| Prop       | Required | Type       | Default | Description           |
+| ---------- | -------- | ---------- | ------- | ----------------------|
+| `resource` | Required | `string`   |         | The record's resource |
+
+## `resource`
+
+The record's resource.

packages/ra-core/src/controller/record/RecordRepresentation.spec.tsx

@@ -0,0 +1,37 @@
+import * as React from 'react';
+import { render, screen } from '@testing-library/react';
+import {
+    ComponentRecordRepresentation,
+    FunctionRecordRepresentation,
+    NoRecordRepresentation,
+    StringRecordRepresentation,
+} from './RecordRepresentation.stories';
+
+describe('RecordRepresentation', () => {
+    it('should render the record id when not provided on its parent <Resource>', async () => {
+        render(<NoRecordRepresentation />);
+        await screen.findByText('#1');
+    });
+    it('should render the record representation when provided as a field name on its parent <Resource>', async () => {
+        render(<StringRecordRepresentation />);
+        await screen.findByText("The Hitchhiker's Guide to the Galaxy");
+    });
+    it('should render the record representation when provided as a function on its parent <Resource>', async () => {
+        render(<FunctionRecordRepresentation />);
+        await screen.findByText(
+            "The Hitchhiker's Guide to the Galaxy by Douglas Adams"
+        );
+    });
+    it('should render the record representation when provided as a component on its parent <Resource>', async () => {
+        render(<ComponentRecordRepresentation />);
+        await screen.findByText(
+            (content, element) => {
+                return (
+                    element?.textContent ===
+                    "The Hitchhiker's Guide to the Galaxy (by Douglas Adams) - 1979"
+                );
+            },
+            { selector: 'p' }
+        );
+    });
+});

packages/ra-core/src/controller/record/RecordRepresentation.stories.tsx

@@ -0,0 +1,117 @@
+import * as React from 'react';
+import {
+    ResourceContextProvider,
+    ResourceDefinitionContextProvider,
+} from '../../core';
+import { RecordContextProvider } from './RecordContext';
+import { RecordRepresentation } from './RecordRepresentation';
+import { useRecordContext } from './useRecordContext';
+export default {
+    title: 'ra-core/controller/record/RecordRepresentation',
+};
+
+const Book = {
+    id: 1,
+    title: "The Hitchhiker's Guide to the Galaxy",
+    author: 'Douglas Adams',
+    publishedAt: '1979-10-12',
+};
+
+export const NoRecordRepresentation = () => (
+    <ResourceContextProvider value="books">
+        <ResourceDefinitionContextProvider
+            definitions={{
+                books: {
+                    name: 'books',
+                    hasList: true,
+                    hasEdit: true,
+                    hasShow: true,
+                    hasCreate: true,
+                },
+            }}
+        >
+            <RecordContextProvider value={Book}>
+                <RecordRepresentation />
+            </RecordContextProvider>
+        </ResourceDefinitionContextProvider>
+    </ResourceContextProvider>
+);
+
+export const StringRecordRepresentation = () => (
+    <ResourceContextProvider value="books">
+        <ResourceDefinitionContextProvider
+            definitions={{
+                books: {
+                    name: 'books',
+                    hasList: true,
+                    hasEdit: true,
+                    hasShow: true,
+                    hasCreate: true,
+                    recordRepresentation: 'title',
+                },
+            }}
+        >
+            <RecordContextProvider value={Book}>
+                <RecordRepresentation />
+            </RecordContextProvider>
+        </ResourceDefinitionContextProvider>
+    </ResourceContextProvider>
+);
+
+export const FunctionRecordRepresentation = () => (
+    <ResourceContextProvider value="books">
+        <ResourceDefinitionContextProvider
+            definitions={{
+                books: {
+                    name: 'books',
+                    hasList: true,
+                    hasEdit: true,
+                    hasShow: true,
+                    hasCreate: true,
+                    recordRepresentation: record =>
+                        `${record.title} by ${record.author}`,
+                },
+            }}
+        >
+            <RecordContextProvider value={Book}>
+                <RecordRepresentation />
+            </RecordContextProvider>
+        </ResourceDefinitionContextProvider>
+    </ResourceContextProvider>
+);
+
+const BookRepresentation = () => {
+    const record = useRecordContext();
+
+    if (!record) return null;
+
+    return (
+        <p>
+            <b>{record.title}</b>{' '}
+            <i>
+                (by {record.author}) -{' '}
+                {new Date(record.publishedAt).getFullYear()}
+            </i>
+        </p>
+    );
+};
+export const ComponentRecordRepresentation = () => (
+    <ResourceContextProvider value="books">
+        <ResourceDefinitionContextProvider
+            definitions={{
+                books: {
+                    name: 'books',
+                    hasList: true,
+                    hasEdit: true,
+                    hasShow: true,
+                    hasCreate: true,
+                    recordRepresentation: <BookRepresentation />,
+                },
+            }}
+        >
+            <RecordContextProvider value={Book}>
+                <RecordRepresentation />
+            </RecordContextProvider>
+        </ResourceDefinitionContextProvider>
+    </ResourceContextProvider>
+);

packages/ra-core/src/controller/record/RecordRepresentation.tsx

@@ -0,0 +1,21 @@
+import * as React from 'react';
+import { useGetRecordRepresentation, useResourceContext } from '../../core';
+import { RaRecord } from '../../types';
+import { useRecordContext } from './useRecordContext';
+
+/**
+ * Render the record representation as specified on its parent <Resource>.
+ * @param props The component props
+ * @param {string} props.resource The resource name
+ * @param {RaRecord} props.record The record to render
+ */
+export const RecordRepresentation = (props: {
+    record?: RaRecord;
+    resource?: string;
+}) => {
+    const record = useRecordContext(props);
+    const resource = useResourceContext(props);
+    const getRecordRepresentation = useGetRecordRepresentation(resource);
+
+    return <>{getRecordRepresentation(record)}</>;
+};

packages/ra-core/src/controller/record/index.ts

@@ -2,3 +2,4 @@ export * from './RecordContext';
 export * from './useRecordContext';
 export * from './WithRecord';
 export * from './OptionalRecordContextProvider';
+export * from './RecordRepresentation';