adding create_insert method

History.txt

@@ -9,6 +9,7 @@
   * Add Arel::SelectManager#limit=
   * Add Arel::SelectManager#offset
   * Add Arel::SelectManager#offset=
+  * Added Arel::SelectManager#create_insert for building an insert manager.
   * Math operations have been added to attributes, thanks to
     Vladimir Meremyanin.
 

lib/arel/crud.rb

@@ -32,11 +32,15 @@ switch to `compile_update`
     end
 
     def compile_insert values
-      im = InsertManager.new @engine
+      im = create_insert
       im.insert values
       im
     end
 
+    def create_insert
+      InsertManager.new @engine
+    end
+
     # FIXME: this method should go away
     def insert values
       if $VERBOSE

test/test_select_manager.rb

@@ -483,6 +483,12 @@ module Arel
       assert_equal children, clause.children
     end
 
+    it 'should create insert managers' do
+      relation = Arel::SelectManager.new Table.engine
+      insert = relation.create_insert
+      assert_kind_of Arel::InsertManager, insert
+    end
+
     it 'should create join nodes' do
       relation = Arel::SelectManager.new Table.engine
       join = relation.create_join 'foo', 'bar'