53 lines
2 KiB
Ruby
53 lines
2 KiB
Ruby
module ActionController
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# Macros are class-level calls that add pre-defined actions to the controller based on the parameters passed in.
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# Currently, they're used to bridge the JavaScript macros, like autocompletion and in-place editing, with the controller
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# backing.
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module Macros
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module AutoComplete #:nodoc:
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def self.included(base) #:nodoc:
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base.extend(ClassMethods)
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end
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# DEPRECATION WARNING: This method will become a separate plugin when Rails 2.0 ships.
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#
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# Example:
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#
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# # Controller
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# class BlogController < ApplicationController
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# auto_complete_for :post, :title
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# end
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#
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# # View
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# <%= text_field_with_auto_complete :post, title %>
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#
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# By default, auto_complete_for limits the results to 10 entries,
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# and sorts by the given field.
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#
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# auto_complete_for takes a third parameter, an options hash to
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# the find method used to search for the records:
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#
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# auto_complete_for :post, :title, :limit => 15, :order => 'created_at DESC'
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#
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# For help on defining text input fields with autocompletion,
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# see ActionView::Helpers::JavaScriptHelper.
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#
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# For more examples, see script.aculo.us:
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# * http://script.aculo.us/demos/ajax/autocompleter
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# * http://script.aculo.us/demos/ajax/autocompleter_customized
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module ClassMethods
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def auto_complete_for(object, method, options = {})
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define_method("auto_complete_for_#{object}_#{method}") do
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find_options = {
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:conditions => [ "LOWER(#{method}) LIKE ?", '%' + params[object][method].downcase + '%' ],
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:order => "#{method} ASC",
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:limit => 10 }.merge!(options)
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@items = object.to_s.camelize.constantize.find(:all, find_options)
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render :inline => "<%= auto_complete_result @items, '#{method}' %>"
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end
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end
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end
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end
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end
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end |