FSE: Add entity editor to post content block

packages/block-library/src/post-content/block.json

@@ -1,5 +1,5 @@
 {
 	"name": "core/post-content",
 	"category": "layout",
-	"context": [ "postId" ]
+	"context": [ "postId", "postType" ]
 }

packages/block-library/src/post-content/edit.js

@@ -1,9 +1,22 @@
-export default function PostContentEdit() {
+/**
+ * WordPress dependencies
+ */
+import { EntityProvider } from '@wordpress/core-data';
+
+/**
+ * Internal dependencies
+ */
+import PostContentInnerBlocks from './inner-blocks';
+
+export default function PostContentEdit( { context: { postId, postType } } ) {
+	if ( postId && postType ) {
+		return (
+			<EntityProvider kind="postType" type={ postType } id={ postId }>
+				<PostContentInnerBlocks postType={ postType } />
+			</EntityProvider>
+		);
+	}
 	return (
-		<p>
-			{
-				'Welcome to WordPress and the wonderful world of blocks. This content represents how a post would look when editing block templates.'
-			}
-		</p>
+		<p>{ 'Try setting the active page or post via the page selector.' }</p>
 	);
 }

packages/block-library/src/post-content/inner-blocks.js

@@ -0,0 +1,29 @@
+/**
+ * WordPress dependencies
+ */
+import { useEntityBlockEditor } from '@wordpress/core-data';
+import { InnerBlocks } from '@wordpress/block-editor';
+
+/**
+ * Renders the content of the current post in a controlled inner block area.
+ *
+ * @param {Object} Props Component props.
+ * @param {string} Props.postType The postType to use for the entity blocks.
+ * @return {Function} Controlled InnerBlocks of the current post.
+ */
+export default function PostContentInnerBlocks( { postType } ) {
+	const [ blocks, onInput, onChange ] = useEntityBlockEditor(
+		'postType',
+		postType,
+		{
+			initialEdits: { status: 'publish' },
+		}
+	);
+	return (
+		<InnerBlocks
+			value={ blocks }
+			onInput={ onInput }
+			onChange={ onChange }
+		/>
+	);
+}