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Sometimes sort tables by number of relationships, closes #460

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Simon Willison 2019-05-15 20:23:33 -07:00
commit faf33515b2
4 changed files with 36 additions and 4 deletions
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15
datasette/views/index.py
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@ -54,14 +54,27 @@ class IndexView(RenderMixin):
"fts_table": await self.ds.execute_against_connection_in_thread(
name, lambda conn: detect_fts(conn, table)
),
"num_relationships_for_sorting": 0,
}
if request.args.get("_sort") == "relationships" or not table_counts:
# We will be sorting by number of relationships, so populate that field
all_foreign_keys = await db.get_all_foreign_keys()
for table, foreign_keys in all_foreign_keys.items():
count = len(foreign_keys["incoming"] + foreign_keys["outgoing"])
tables[table]["num_relationships_for_sorting"] = count
hidden_tables = [t for t in tables.values() if t["hidden"]]
visible_tables = [t for t in tables.values() if not t["hidden"]]
tables_and_views_truncated = list(
sorted(
(t for t in tables.values() if t not in hidden_tables),
key=lambda t: t["count"] or 0,
key=lambda t: (
t["num_relationships_for_sorting"],
t["count"] or 0,
t["name"],
),
reverse=True,
)[:TRUNCATE_AT]
)