Using a mutiple collection select form helper with habtm or has many associations in Rails

davenolan (davenolan) — Mon, 30 Jul 2007 08:58:54 GMT

// where user has and belongs to many roles



# in your view

<%= collection_select :user, :role_ids, Role.find(:all, :order => 'name ASC'), :id, :name, { :selected => @user.role_ids }, { :multiple => true, :name => 'user[role_ids][]' } -%>

each_slice

nemostultae (Daniel) — Fri, 30 Sep 2005 16:50:45 GMT



require 'enumerator'



(1..10).each_slice(2) { |n| p n }

# [1, 2]

# [3, 4]

# [5, 6]

# [7, 8]

# [9, 10]

DZone Snippets: collection code

Using a mutiple collection select form helper with habtm or has many associations in Rails

each_slice