DEPRECATION WARNING: This method will become a separate plugin when Rails 2.0 ships.
Example:
# Controller
class BlogController < ApplicationController
auto_complete_for :post, :title
end
# View
<%= text_field_with_auto_complete :post, title %>
By default, auto_complete_for limits the results to 10 entries, and sorts by the given field.
auto_complete_for takes a third parameter, an options hash to the find method used to search for the records:
auto_complete_for :post, :title, :limit => 15, :order => 'created_at DESC'
For help on defining text input fields with autocompletion, see ActionView::Helpers::JavaScriptHelper.
For more examples, see script.aculo.us:
Methods
Public Instance methods
[ show source ]
# File vendor/rails/actionpack/lib/action_controller/macros/auto_complete.rb, line 38
38: def auto_complete_for(object, method, options = {})
39: define_method("auto_complete_for_#{object}_#{method}") do
40: find_options = {
41: :conditions => [ "LOWER(#{method}) LIKE ?", '%' + params[object][method].downcase + '%' ],
42: :order => "#{method} ASC",
43: :limit => 10 }.merge!(options)
44:
45: @items = object.to_s.camelize.constantize.find(:all, find_options)
46:
47: render :inline => "<%= auto_complete_result @items, '#{method}' %>"
48: end
49: end