added named scope items filtering

CHANGELOG

@@ -1,15 +1,17 @@
  HEAD [2010-05-07]
 ====================
 
-	Features
+    Features
+        * named scope items filtering
 
-	Enhancements
+    Enhancements
 
-	Changes
+    Changes
+
+    Bugfixes
 
-	Bugfixes
 
  0.1.0 [2010-02-03]
 ====================
 
- First release.
+    First release.

README.textile

@@ -1,8 +1,10 @@
-h1. JrailsAutoComplete
+h1. jRails autocomplete with unobtrusive javascript
 
 This plugin adds autocomplete support to jrails[1], using jquery-ui[2];
 it works similarly to the original rails auto complete, but generating unobtrusive
-javascript.
+javascript. Additional features:
+
+* named scope items filtering, based on a customized list of autocomplete options.
 
 *WARNING NOTE*: This is an active work in progress - currently only used on
 few live projects right now. Use at your own discretion.
@@ -24,9 +26,43 @@ In your views:
 <%= text_field_with_auto_complete :fruit, :name %>
 </code></pre>
 
+h2. Named scopes with auto_complete_for:
+
+auto_complete_for now optionally accepts a block that is called with the item
+list and HTTP parameters when the auto complete AJAX request is received. This
+block can be used to specify that a named scope be used to generate a
+customized list of autocomplete options.
+
+h3. Example using anonymous scope:
+
+<pre><code>auto_complete_for :fruit, :shape do |items, params|
+  items.scoped( { :conditions => [ "colour = ?", params['fruit']['color'] ] })
+end
+</code></pre>
+
+h3. Example using named scope:
+
+Having the model:
+
+<pre><code>class Fruit < ActiveRecord::Base
+  belongs_to :owner
+  named_scope :by_owner,
+    lambda { |owner_name| {
+      :include => :owner,
+      :conditions => [ "owner.name = ?", owner_name ]
+    } }
+end
+</code></pre>
+
+In the controller you can use the macro function as such
+
+<pre><code>auto_complete_for :fruit, :name do | items, params |
+  items.by_owner(params['owner'])
+end
+</code></pre>
+
 h2. Todo
 
-* named scope filtering support
 * made a gem
 * test, test... test!
 
@@ -39,6 +75,8 @@ Please direct all queries to the issue tracker:
 h2. Credits
 
 Thanks to Paul Smith for the "original idea":http://github.com/elandesign/formtastic_autocomplete.git
+and Pat Shaughnessy for "inspirating":http://patshaughnessy.net/repeated_auto_complete me
+the named scope part.
 
 h2. References
 

lib/jrails_auto_complete.rb

@@ -26,15 +26,17 @@ def self.included(base)
   module ClassMethods
     def auto_complete_for(object_name, method_name, options = {})
       self.send(:define_method, "auto_complete_for_#{object_name}_#{method_name}") do
-        find_options = {
-          :conditions => [ "LOWER(#{method_name}) LIKE ?", '%' + params['term'].downcase + '%' ],
-          :order => "#{method_name} ASC",
+        model = object_name.to_s.camelize.constantize
+        full_method_name = "#{model.quoted_table_name}.#{method_name}"
+        find_options= {
+          :conditions => ["LOWER(#{full_method_name}) LIKE ?", '%' + params['term'].downcase + '%'],
+          :order => "#{full_method_name} ASC",
           :limit => 10
         }.merge!(options)
 
-        @items = object_name.to_s.camelize.constantize.find(:all, find_options)
-
-        @items = yield(@items) if block_given?
+        @items = model.scoped(find_options)
+        @items = yield(@items, params) if block_given?
+
         render :inline => "<%= auto_complete_result @items, '#{method_name}', '#{params['term']}' %>"
       end
     end