# HG changeset patch
# User Goffi <goffi@goffi.org>
# Date 1633014262 -7200
# Node ID cff720e26089afcba00adbe2c4a54ca010a7806d
# Parent  a410db730301980b5d670b60cb4437489d073d98
pages (blog/view): activate pagination when a single item is shown:

`previous_page_url` and `next_page_url` are set when `item_id` is used. For now, they are
both activated even if there is no item before or after, as it would request to make extra
request to check it. This may be improved in 0.9 by using internal cache.

fix 399

diff -r a410db730301 -r cff720e26089 libervia/pages/blog/view/page_meta.py
--- a/libervia/pages/blog/view/page_meta.py	Thu Sep 30 17:01:20 2021 +0200
+++ b/libervia/pages/blog/view/page_meta.py	Thu Sep 30 17:04:22 2021 +0200
@@ -3,6 +3,7 @@
 import html
 from libervia.server.constants import Const as C
 from twisted.words.protocols.jabber import jid
+from twisted.web import server
 from sat.core.i18n import _, D_
 from sat.tools.common.template import safe
 from sat.tools.common import uri
@@ -142,7 +143,15 @@
             comment_data['items'] = comments['items']
             await appendComments(self, request, comments, profile)
 
-async def getBlogItems(self, request, service, node, item_id, extra, profile):
+async def getBlogItems(
+    self,
+    request: server.Request,
+    service: jid.JID,
+    node: str,
+    item_id,
+    extra: dict,
+    profile: str
+) -> dict:
     try:
         if item_id:
             items_id = [item_id]
@@ -209,7 +218,25 @@
     target_profile = template_data.get('target_profile')
 
     if blog_items:
-        if not item_id:
+        if item_id:
+            template_data["previous_page_url"] = self.getURL(
+                service.full(),
+                node,
+                before=item_id,
+                page_max=1
+            )
+            template_data["next_page_url"] = self.getURL(
+                service.full(),
+                node,
+                after=item_id,
+                page_max=1
+            )
+            blog_items["rsm"] = {
+                "last": item_id,
+                "first": item_id,
+            }
+            blog_items["complete"] = False
+        else:
             self.setPagination(request, blog_items)
     else:
         if item_id: