CrudComponents Playground

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 %>

Reset
	Cover	Title	Author names	Genre	Price	Publisher	Active
								Reset
— 2
		The Burning Archive 100	Joe Abercrombie	Fiction	24.48 €	—	✗
		The Silent Engine 115	Octavia Butler, Margaret Atwood, and Ursula Le Guin	Fiction	24.38 €	—	✗
Ace 2
Orbit 1
		The Broken Empire 48	Ted Chiang and Ann Leckie	Fiction	30.49 €	Orbit	✗
Gollancz 1
DAW 4
		The Ancient Winter 3	Joe Abercrombie	Fiction	24.81 €	DAW	✗
		The Endless Station 13	Ann Leckie, Martha Wells, and Ursula Le Guin	Fiction	27.05 €	DAW	✗
		The Burning Empire 118	Kim Robinson, Mary Shelley, and Margaret Atwood	Fiction	17.01 €	DAW	✗
		The Ancient Archive 119	Octavia Butler and Mary Shelley	Fiction	21.49 €	DAW	✗

Grouped table