Molodetz blogrol volgens DPP-template

molodetz/database/posts.py

@@ -0,0 +1,74 @@
+# retoor <retoor@molodetz.nl>
+from molodetz.database.core import db, generate_uid, in_clause, make_combined_slug, now_iso, resolve_by_slug
+from molodetz.database.pagination import paginate
+
+
+def insert_post(user_uid, title, body, topic, status="draft", is_placeholder=False, created_at=None):
+    uid = generate_uid()
+    stamp = created_at or now_iso()
+    row = {
+        "uid": uid,
+        "slug": make_combined_slug(title, uid),
+        "title": title,
+        "body": body,
+        "topic": topic,
+        "status": status,
+        "is_placeholder": bool(is_placeholder),
+        "user_uid": user_uid,
+        "published_at": stamp if status == "published" else None,
+        "created_at": stamp,
+        "updated_at": stamp,
+        "deleted_at": None,
+        "deleted_by": None,
+    }
+    db["posts"].insert(row)
+    return row
+
+
+def update_post_row(uid, **fields):
+    fields["uid"] = uid
+    db["posts"].update(fields, ["uid"])
+
+
+def get_post(uid):
+    if "posts" not in db.tables:
+        return None
+    return db["posts"].find_one(uid=uid, deleted_at=None)
+
+
+def get_post_by_slug(slug):
+    return resolve_by_slug("posts", slug)
+
+
+def published_posts(topic=None, before=None, limit=25, user_uid=None):
+    filters = {"status": "published"}
+    if topic:
+        filters["topic"] = topic
+    if user_uid:
+        filters["user_uid"] = user_uid
+    return paginate("posts", before=before, cursor_field="published_at", limit=limit, **filters)
+
+
+def all_posts(limit=200):
+    if "posts" not in db.tables:
+        return []
+    return list(db["posts"].find(deleted_at=None, order_by=["-created_at"], _limit=limit))
+
+
+def count_published():
+    if "posts" not in db.tables:
+        return 0
+    return db["posts"].count(deleted_at=None, status="published")
+
+
+def post_counts_by_author(user_uids):
+    user_uids = [uid for uid in set(user_uids) if uid]
+    if not user_uids or "posts" not in db.tables:
+        return {}
+    placeholders, params = in_clause(user_uids)
+    rows = db.query(
+        f"SELECT user_uid, COUNT(*) AS n FROM posts WHERE user_uid IN ({placeholders}) "
+        "AND deleted_at IS NULL AND status = 'published' GROUP BY user_uid",
+        **params,
+    )
+    return {row["user_uid"]: int(row["n"]) for row in rows}