diff --git a/activerecord/lib/active_record/base.rb b/activerecord/lib/active_record/base.rb
index a9361f96f04b..2157a0adedc6 100644
--- a/activerecord/lib/active_record/base.rb
+++ b/activerecord/lib/active_record/base.rb
@@ -1384,10 +1384,7 @@ def initialize(attributes = nil)
 
         ensure_proper_type
 
-        if scope = self.class.send(:current_scoped_methods)
-          create_with = scope.scope_for_create
-          create_with.each { |att,value| self.send("#{att}=", value) } if create_with
-        end
+        populate_with_current_scope_attributes
         self.attributes = attributes unless attributes.nil?
 
         result = yield self if block_given?
@@ -1416,10 +1413,7 @@ def initialize_copy(other)
         @new_record = true
         ensure_proper_type
 
-        if scope = self.class.send(:current_scoped_methods)
-          create_with = scope.scope_for_create
-          create_with.each { |att,value| self.send("#{att}=", value) } if create_with
-        end
+        populate_with_current_scope_attributes
       end
 
       # Returns a String, which Action Pack uses for constructing an URL to this
@@ -1808,6 +1802,13 @@ def object_from_yaml(string)
         return string unless string.is_a?(String) && string =~ /^---/
         YAML::load(string) rescue string
       end
+
+      def populate_with_current_scope_attributes
+        if scope = self.class.send(:current_scoped_methods)
+          create_with = scope.scope_for_create
+          create_with.each { |att,value| self.respond_to?(:"#{att}=") && self.send("#{att}=", value) } if create_with
+        end
+      end
   end
 
   Base.class_eval do
diff --git a/activerecord/lib/active_record/relation.rb b/activerecord/lib/active_record/relation.rb
index dfc66cdd0907..062293eea4dd 100644
--- a/activerecord/lib/active_record/relation.rb
+++ b/activerecord/lib/active_record/relation.rb
@@ -326,7 +326,11 @@ def where_values_hash
 
     def scope_for_create
       @scope_for_create ||= begin
-        @create_with_value || where_values_hash
+        if @create_with_value
+          @create_with_value.reverse_merge(where_values_hash || {})
+        else
+          where_values_hash
+        end
       end
     end
 
diff --git a/activerecord/test/cases/associations/belongs_to_associations_test.rb b/activerecord/test/cases/associations/belongs_to_associations_test.rb
index 742513230e21..cbaa4990f751 100644
--- a/activerecord/test/cases/associations/belongs_to_associations_test.rb
+++ b/activerecord/test/cases/associations/belongs_to_associations_test.rb
@@ -474,4 +474,9 @@ def test_invalid_belongs_to_dependent_option_restrict_raises_exception
       Author.belongs_to :special_author_address, :dependent => :restrict
     end
   end
+
+  def test_attributes_are_being_set_when_initialized_from_belongs_to_association_with_where_clause
+    new_firm = accounts(:signals37).build_firm(:name => 'Apple')
+    assert_equal new_firm.name, "Apple"
+  end
 end
diff --git a/activerecord/test/cases/associations/has_and_belongs_to_many_associations_test.rb b/activerecord/test/cases/associations/has_and_belongs_to_many_associations_test.rb
index 2bdf9d897129..c0be7dfdcc16 100644
--- a/activerecord/test/cases/associations/has_and_belongs_to_many_associations_test.rb
+++ b/activerecord/test/cases/associations/has_and_belongs_to_many_associations_test.rb
@@ -848,4 +848,14 @@ def test_caching_of_columns
     assert_queries(0) { david.projects.columns; david.projects.columns }
   end
 
+  def test_attributes_are_being_set_when_initialized_from_habm_association_with_where_clause
+    new_developer = projects(:action_controller).developers.where(:name => "Marcelo").build
+    assert_equal new_developer.name, "Marcelo"
+  end
+
+  def test_attributes_are_being_set_when_initialized_from_habm_association_with_multiple_where_clauses
+    new_developer = projects(:action_controller).developers.where(:name => "Marcelo").where(:salary => 90_000).build
+    assert_equal new_developer.name, "Marcelo"
+    assert_equal new_developer.salary, 90_000
+  end
 end
diff --git a/activerecord/test/cases/associations/has_many_associations_test.rb b/activerecord/test/cases/associations/has_many_associations_test.rb
index efabf74e13e6..720b7fc38656 100644
--- a/activerecord/test/cases/associations/has_many_associations_test.rb
+++ b/activerecord/test/cases/associations/has_many_associations_test.rb
@@ -1255,4 +1255,16 @@ class NullifyModel < ActiveRecord::Base
       end
     EOF
   end
+
+  def test_attributes_are_being_set_when_initialized_from_has_many_association_with_where_clause
+    new_comment = posts(:welcome).comments.where(:body => "Some content").build
+    assert_equal new_comment.body, "Some content"
+  end
+
+  def test_attributes_are_being_set_when_initialized_from_has_many_association_with_multiple_where_clauses
+    new_comment = posts(:welcome).comments.where(:body => "Some content").where(:type => 'SpecialComment').build
+    assert_equal new_comment.body, "Some content"
+    assert_equal new_comment.type, "SpecialComment"
+    assert_equal new_comment.post_id, posts(:welcome).id
+  end
 end
diff --git a/activerecord/test/cases/associations/has_many_through_associations_test.rb b/activerecord/test/cases/associations/has_many_through_associations_test.rb
index 45f8bd64ebf6..0dac633852ad 100644
--- a/activerecord/test/cases/associations/has_many_through_associations_test.rb
+++ b/activerecord/test/cases/associations/has_many_through_associations_test.rb
@@ -421,4 +421,18 @@ def test_collection_singular_ids_setter_raises_exception_when_invalid_ids_set
     assert_raises(ActiveRecord::RecordNotFound) {company.developer_ids= ids}
   end
 
+  def test_build_a_model_from_hm_through_association_with_where_clause
+    assert_nothing_raised { books(:awdr).subscribers.where(:nick => "marklazz").build }
+  end
+
+  def test_attributes_are_being_set_when_initialized_from_hm_through_association_with_where_clause
+    new_subscriber = books(:awdr).subscribers.where(:nick => "marklazz").build
+    assert_equal new_subscriber.nick, "marklazz"
+  end
+
+  def test_attributes_are_being_set_when_initialized_from_hm_through_association_with_multiple_where_clauses
+    new_subscriber = books(:awdr).subscribers.where(:nick => "marklazz").where(:name => 'Marcelo Giorgi').build
+    assert_equal new_subscriber.nick, "marklazz"
+    assert_equal new_subscriber.name, "Marcelo Giorgi"
+  end
 end
diff --git a/activerecord/test/cases/associations/has_one_associations_test.rb b/activerecord/test/cases/associations/has_one_associations_test.rb
index e959ed46cce7..b522be3fe02a 100644
--- a/activerecord/test/cases/associations/has_one_associations_test.rb
+++ b/activerecord/test/cases/associations/has_one_associations_test.rb
@@ -326,4 +326,9 @@ def test_create_respects_hash_condition
     assert       !account.new_record?
     assert_equal 500, account.credit_limit
   end
+
+  def test_attributes_are_being_set_when_initialized_from_has_one_association_with_where_clause
+    new_account = companies(:first_firm).build_account(:firm_name => 'Account')
+    assert_equal new_account.firm_name, "Account"
+  end
 end
diff --git a/activerecord/test/cases/method_scoping_test.rb b/activerecord/test/cases/method_scoping_test.rb
index ffe16ffdfa4a..f3d3d6283060 100644
--- a/activerecord/test/cases/method_scoping_test.rb
+++ b/activerecord/test/cases/method_scoping_test.rb
@@ -219,7 +219,7 @@ def test_scoped_create
     new_comment = nil
 
     VerySpecialComment.send(:with_scope, :create => { :post_id => 1 }) do
-      assert_equal({:post_id => 1}, VerySpecialComment.scoped.send(:scope_for_create))
+      assert_equal({:post_id => 1, :type => 'VerySpecialComment' }, VerySpecialComment.scoped.send(:scope_for_create))
       new_comment = VerySpecialComment.create :body => "Wonderful world"
     end