Wire sx_content through full read/write pipeline

Model: add sx_content column to Post. Writer: accept sx_content in
create_post, create_page, update_post. Routes: read sx_content from form
data in new post, new page, and edit routes. Read pipeline: ghost_db
includes sx_content in public dict, detail/home views prefer sx_content
over html when available, PostDTO includes sx_content.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

blog/bp/blog/ghost_db.py

@@ -63,6 +63,7 @@ def _post_to_public(p: Post) -> Dict[str, Any]:
         "slug": p.slug,
         "title": p.title,
         "html": p.html,
+        "sx_content": p.sx_content,
         "is_page": p.is_page,
         "excerpt": p.custom_excerpt or p.excerpt,
         "custom_excerpt": p.custom_excerpt,

blog/bp/blog/routes.py

@@ -265,6 +265,7 @@ def register(url_prefix, title):
         return await make_response(html, 400)
 
       # Create directly in db_blog
+      sx_content_raw = form.get("sx_content", "").strip() or None
       post = await writer_create(
           g.s,
           title=title,
@@ -274,6 +275,7 @@ def register(url_prefix, title):
           feature_image=feature_image or None,
           custom_excerpt=custom_excerpt or None,
           feature_image_caption=feature_image_caption or None,
+          sx_content=sx_content_raw,
       )
       await g.s.flush()
 
@@ -337,6 +339,7 @@ def register(url_prefix, title):
         return await make_response(html, 400)
 
       # Create directly in db_blog
+      sx_content_raw = form.get("sx_content", "").strip() or None
       page = await writer_create_page(
           g.s,
           title=title,
@@ -346,6 +349,7 @@ def register(url_prefix, title):
           feature_image=feature_image or None,
           custom_excerpt=custom_excerpt or None,
           feature_image_caption=feature_image_caption or None,
+          sx_content=sx_content_raw,
       )
       await g.s.flush()
 

blog/bp/post/admin/routes.py

@@ -562,6 +562,7 @@ def register():
     elif status and status != current_status:
       effective_status = status
 
+    sx_content_raw = form.get("sx_content", "").strip() or None
     try:
       post = await writer_update(
           g.s,
@@ -573,6 +574,7 @@ def register():
           custom_excerpt=custom_excerpt or None,
           feature_image_caption=feature_image_caption or None,
           status=effective_status,
+          sx_content=sx_content_raw,
       )
     except OptimisticLockError:
       return redirect(

blog/models/content.py

@@ -60,6 +60,7 @@ class Post(Base):
     plaintext: Mapped[Optional[str]] = mapped_column(Text())
     mobiledoc: Mapped[Optional[str]] = mapped_column(Text())
     lexical: Mapped[Optional[str]] = mapped_column(Text())
+    sx_content: Mapped[Optional[str]] = mapped_column(Text())
 
     feature_image: Mapped[Optional[str]] = mapped_column(Text())
     feature_image_alt: Mapped[Optional[str]] = mapped_column(Text())

blog/services/__init__.py

@@ -19,6 +19,7 @@ def _post_to_dto(post: Post) -> PostDTO:
         is_page=post.is_page,
         feature_image=post.feature_image,
         html=post.html,
+        sx_content=post.sx_content,
         excerpt=post.excerpt,
         custom_excerpt=post.custom_excerpt,
         published_at=post.published_at,

blog/services/post_writer.py

@@ -207,6 +207,7 @@ async def create_post(
     feature_image_caption: str | None = None,
     tag_names: list[str] | None = None,
     is_page: bool = False,
+    sx_content: str | None = None,
 ) -> Post:
     """Create a new post or page directly in db_blog."""
     html, plaintext, reading_time = _render_and_extract(lexical_json)
@@ -217,6 +218,7 @@ async def create_post(
         title=title or "Untitled",
         slug=slug,
         lexical=lexical_json if isinstance(lexical_json, str) else json.dumps(lexical_json),
+        sx_content=sx_content,
         html=html,
         plaintext=plaintext,
         reading_time=reading_time,
@@ -281,6 +283,7 @@ async def create_page(
     custom_excerpt: str | None = None,
     feature_image_caption: str | None = None,
     tag_names: list[str] | None = None,
+    sx_content: str | None = None,
 ) -> Post:
     """Create a new page. Convenience wrapper around create_post."""
     return await create_post(
@@ -294,6 +297,7 @@ async def create_page(
         feature_image_caption=feature_image_caption,
         tag_names=tag_names,
         is_page=True,
+        sx_content=sx_content,
     )
 
 
@@ -308,6 +312,7 @@ async def update_post(
     custom_excerpt: str | None = ...,  # type: ignore[assignment]
     feature_image_caption: str | None = ...,  # type: ignore[assignment]
     status: str | None = None,
+    sx_content: str | None = ...,  # type: ignore[assignment]
 ) -> Post:
     """Update post content. Optimistic lock via expected_updated_at.
 
@@ -342,6 +347,9 @@ async def update_post(
     if title is not None:
         post.title = title
 
+    if sx_content is not _SENTINEL:
+        post.sx_content = sx_content
+
     if feature_image is not _SENTINEL:
         post.feature_image = feature_image
     if custom_excerpt is not _SENTINEL:

blog/sx/detail.sx

@@ -25,13 +25,15 @@
       excerpt
       (div :class "hidden md:block" at-bar)))
 
-(defcomp ~blog-detail-main (&key draft chrome feature-image html-content)
+(defcomp ~blog-detail-main (&key draft chrome feature-image html-content sx-content)
   (<> (article :class "relative"
     draft
     chrome
     (when feature-image (div :class "mb-3 flex justify-center"
       (img :src feature-image :alt "" :class "rounded-lg w-full md:w-3/4 object-cover")))
-    (when html-content (div :class "blog-content p-2" (~rich-text :html html-content))))
+    (if sx-content
+      (div :class "blog-content p-2" sx-content)
+      (when html-content (div :class "blog-content p-2" (~rich-text :html html-content)))))
     (div :class "pb-8")))
 
 (defcomp ~blog-meta (&key robots page-title desc canonical og-type og-title image twitter-card twitter-title)
@@ -50,5 +52,8 @@
     (meta :name "twitter:description" :content desc)
     (when image (meta :name "twitter:image" :content image))))
 
-(defcomp ~blog-home-main (&key html-content)
+(defcomp ~blog-home-main (&key html-content sx-content)
-  (article :class "relative" (div :class "blog-content p-2" (~rich-text :html html-content))))
+  (article :class "relative"
+    (if sx-content
+      (div :class "blog-content p-2" sx-content)
+      (div :class "blog-content p-2" (~rich-text :html html-content)))))

blog/sx/sx_components.py

@@ -716,11 +716,13 @@ def _post_main_panel_sx(ctx: dict) -> str:
 
     fi = post.get("feature_image")
     html_content = post.get("html", "")
+    sx_content = post.get("sx_content", "")
 
     return sx_call("blog-detail-main",
         draft=SxExpr(draft_sx) if draft_sx else None,
         chrome=SxExpr(chrome_sx) if chrome_sx else None,
         feature_image=fi, html_content=html_content,
+        sx_content=SxExpr(sx_content) if sx_content else None,
     )
 
 
@@ -770,10 +772,13 @@ def _post_meta_sx(ctx: dict) -> str:
 # ---------------------------------------------------------------------------
 
 def _home_main_panel_sx(ctx: dict) -> str:
-    """Home page content — renders the Ghost page HTML."""
+    """Home page content — renders the Ghost page HTML or sx_content."""
     post = ctx.get("post") or {}
     html = post.get("html", "")
-    return sx_call("blog-home-main", html_content=html)
+    sx_content = post.get("sx_content", "")
+    return sx_call("blog-home-main",
+                   html_content=html,
+                   sx_content=SxExpr(sx_content) if sx_content else None)
 
 
 # ---------------------------------------------------------------------------

shared/contracts/dtos.py

@@ -87,6 +87,7 @@ class PostDTO:
     is_page: bool = False
     feature_image: str | None = None
     html: str | None = None
+    sx_content: str | None = None
     excerpt: str | None = None
     custom_excerpt: str | None = None
     published_at: datetime | None = None