Fix integer quoting issues in association preload. [#602 state:resolved]

Signed-off-by: Pratik Naik <pratiknaik@gmail.com>

activerecord/lib/active_record/association_preload.rb

@@ -188,7 +188,6 @@ module ActiveRecord
         through_records
       end
 
-      # FIXME: quoting
       def preload_belongs_to_association(records, reflection, preload_options={})
         options = reflection.options
         primary_key_name = reflection.primary_key_name
@@ -227,9 +226,19 @@ module ActiveRecord
 
           table_name = klass.quoted_table_name
           primary_key = klass.primary_key
-          conditions = "#{table_name}.#{primary_key} IN (?)"
+          conditions = "#{table_name}.#{connection.quote_column_name(primary_key)} IN (?)"
           conditions << append_conditions(options, preload_options)
-          associated_records = klass.find(:all, :conditions => [conditions, id_map.keys.uniq],
+          column_type = klass.columns.detect{|c| c.name == primary_key}.type
+          ids = id_map.keys.uniq.map do |id|
+            if column_type == :integer
+              id.to_i
+            elsif column_type == :float
+              id.to_f
+            else
+              id
+            end
+          end
+          associated_records = klass.find(:all, :conditions => [conditions, ids],
                                           :include => options[:include],
                                           :select => options[:select],
                                           :joins => options[:joins],

activerecord/test/cases/inheritance_test.rb

@@ -191,6 +191,13 @@ class InheritanceTest < ActiveRecord::TestCase
     assert_not_nil account.instance_variable_get("@firm"), "nil proves eager load failed"
   end
 
+  def test_eager_load_belongs_to_primary_key_quoting
+    con = Account.connection
+    assert_sql(/\(#{con.quote_table_name('companies')}.#{con.quote_column_name('id')} IN \(1\)\)/) do
+      Account.find(1, :include => :firm)
+    end
+  end
+
   def test_alt_eager_loading
     switch_to_alt_inheritance_column
     test_eager_load_belongs_to_something_inherited