Grouped table

Group by publisher Group by genre
How this page is built the gem renders it — this is all you write

Grouping is a render-time arrangement, like the layout. Add group_by: :publisher — the gem orders by the group key, splits the rows into collapsible groups (chevron in the header) and shows a per-group count. With 120 books, groups start collapsed beyond config.group_collapse_threshold (default 50), opening only the first; the open ones live in ?open=, so a half-expanded view is copy-pasteable.

app/views/groups/index.html.erb 
<%= crud_collection @books, group_by: :publisher %>   <%# belongs_to, enum or a column %>

Read more: Grouping

Reset
Cover Title Author names Genre Price Publisher Active
Reset
— 16
The Dispossessed City 4 Kim Robinson, Margaret Atwood, and Adrian Tchaikovsky Fiction 19.95 € — ✓
The Burning Winter 6 Octavia Butler Scifi 21.78 € — ✓
The Endless Station 11 Joe Abercrombie Scifi 10.86 € — ✓
The Hidden Archive 22 Becky Chambers, Mary Shelley, and Frank Herbert Fiction 23.21 € — ✓
The Endless Door 35 Martha Wells Nonfiction 24.06 € — ✓
The Luminous Machine 41 Ursula Le Guin Nonfiction 23.63 € — ✓
The Distant Garden 52 Joe Abercrombie and Ursula Le Guin Fiction 36.80 € — ✓
The Endless Station 55 Ann Leckie, Frank Herbert, and Joe Abercrombie Nonfiction 20.24 € — ✓
The Dispossessed Forest 64 Liu Cixin Fiction 36.11 € — ✓
The Ancient Engine 71 Becky Chambers Scifi 32.68 € — ✓
The Ancient Engine 80 Martha Wells and Kim Robinson Nonfiction 17.29 € — ✓
The Dispossessed Empire 89 Kim Robinson and Joe Abercrombie Scifi 11.61 € — ✓
The Broken Forest 104 Octavia Butler and Frank Herbert Fiction 17.49 € — ✓
The Hidden Door 107 Iain Banks and Mary Shelley Scifi 17.84 € — ✓
The Silent Archive 116 Ted Chiang and Joe Abercrombie Fiction 10.28 € — ✓
The Endless Empire 117 Becky Chambers and Ted Chiang Scifi 29.30 € — ✓
Tor Books 11
The Endless Dune 17 Joe Abercrombie, Mary Shelley, and Stanisław Lem Fiction 18.69 € Tor Books ✓
The Endless Winter 28 Iain Banks, Liu Cixin, and Ted Chiang Fiction 29.97 € Tor Books ✓
The Broken Mirror 37 Margaret Atwood and Octavia Butler Nonfiction 7.28 € Tor Books ✓
The Distant Forest 38 Adrian Tchaikovsky and Octavia Butler Fiction 38.71 € Tor Books ✓
The Ancient Garden 42 Iain Banks Fiction 35.86 € Tor Books ✓
The Hidden Station 44 Margaret Atwood, Martha Wells, and Becky Chambers Scifi 12.11 € Tor Books ✓
The Ancient Machine 51 Ann Leckie and Ursula Le Guin Nonfiction 40.77 € Tor Books ✓
The Ancient Dune 67 Mary Shelley and Ann Leckie Fiction 38.41 € Tor Books ✓
The Quiet Door 87 Ted Chiang Scifi 35.06 € Tor Books ✓
The Quiet Tower 90 Octavia Butler, Ted Chiang, and Margaret Atwood Nonfiction 31.01 € Tor Books ✓
The Quiet Station 95 Adrian Tchaikovsky, Ursula Le Guin, and Stanisław Lem Fiction 6.29 € Tor Books ✓
Ace 12
Orbit 6
The Hidden Winter 32 Kim Robinson, Stanisław Lem, and Margaret Atwood Scifi 40.79 € Orbit ✓
The Ancient Garden 43 Frank Herbert, Iain Banks, and Becky Chambers Fiction 42.67 € Orbit ✓
The Distant Engine 46 Margaret Atwood and Ted Chiang Fiction 21.25 € Orbit ✓
The Ancient Forest 56 Iain Banks, Ursula Le Guin, and Kim Robinson Scifi 33.64 € Orbit ✓
The Distant Station 86 Frank Herbert and Mary Shelley Fiction 12.86 € Orbit ✓
The Hidden Door 106 Martha Wells, Mary Shelley, and Stanisław Lem Nonfiction 19.30 € Orbit ✓
Gollancz 9
DAW 12
Baen 7
Del Rey 10
Vintage 14