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@@ -1,5 +1,9 @@
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 *Edge*
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+* Add :validate option to associations to enable/disable the automatic validation of associated models. Resolves #301. [Jan De Poorter]
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+
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+* PostgreSQL: use 'INSERT ... RETURNING id' for 8.2 and later.  [Jeremy Kemper]
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+
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 * Added SQL escaping for :limit and :offset in MySQL [Jonathan Wiess]
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@@ -690,6 +690,7 @@ module ActiveRecord
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       #   association is a polymorphic +belongs_to+.
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       # * <tt>:uniq</tt> - If true, duplicates will be omitted from the collection. Useful in conjunction with <tt>:through</tt>.
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       # * <tt>:readonly</tt> - If true, all the associated objects are readonly through the association.
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+      # * <tt>:validate</tt> - If false, don't validate the associated objects when saving the parent object. true by default.
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       #
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       # Option examples:
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       #   has_many :comments, :order => "posted_on"
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@@ -710,7 +711,7 @@ module ActiveRecord
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         configure_dependency_for_has_many(reflection)
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-        add_multiple_associated_save_callbacks(reflection.name)
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+        add_multiple_associated_save_callbacks(reflection.name) unless options[:validate] == false
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         add_association_callbacks(reflection.name, reflection.options)
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         if options[:through]
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@@ -769,6 +770,7 @@ module ActiveRecord
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       # * <tt>:source_type</tt> - Specifies type of the source association used by <tt>has_one :through</tt> queries where the source
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       #   association is a polymorphic +belongs_to+.      
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       # * <tt>:readonly</tt> - If true, the associated object is readonly through the association.
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+      # * <tt>:validate</tt> - If false, don't validate the associated object when saving the parent object. +false+ by default.
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       #
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       # Option examples:
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       #   has_one :credit_card, :dependent => :destroy  # destroys the associated credit card
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@@ -799,7 +801,7 @@ module ActiveRecord
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           end
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           after_save method_name
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-          add_single_associated_save_callbacks(reflection.name) 
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+          add_single_associated_save_callbacks(reflection.name) if options[:validate] == true
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           association_accessor_methods(reflection, HasOneAssociation)
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           association_constructor_method(:build,  reflection, HasOneAssociation)
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           association_constructor_method(:create, reflection, HasOneAssociation)
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@@ -857,6 +859,7 @@ module ActiveRecord
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       #   Note: If you've enabled the counter cache, then you may want to add the counter cache attribute
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       #   to the +attr_readonly+ list in the associated classes (e.g. <tt>class Post; attr_readonly :comments_count; end</tt>).
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       # * <tt>:readonly</tt> - If true, the associated object is readonly through the association.
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+      # * <tt>:validate</tt> - If false, don't validate the associated objects when saving the parent object. +true+ by default.
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       #
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       # Option examples:
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       #   belongs_to :firm, :foreign_key => "client_of"
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@@ -937,6 +940,8 @@ module ActiveRecord
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           )
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         end
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+        add_single_associated_save_callbacks(reflection.name) unless options[:validate] == false
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+
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         configure_dependency_for_belongs_to(reflection)
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       end
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@@ -1025,6 +1030,7 @@ module ActiveRecord
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       # * <tt>:select</tt> - By default, this is <tt>*</tt> as in <tt>SELECT * FROM</tt>, but can be changed if, for example, you want to do a join
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       #   but not include the joined columns. Do not forget to include the primary and foreign keys, otherwise it will raise an error.
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       # * <tt>:readonly</tt> - If true, all the associated objects are readonly through the association.
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+      # * <tt>:validate</tt> - If false, don't validate the associated objects when saving the parent object. +true+ by default.
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       #
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       # Option examples:
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       #   has_and_belongs_to_many :projects
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@@ -1037,7 +1043,7 @@ module ActiveRecord
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       def has_and_belongs_to_many(association_id, options = {}, &extension)
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         reflection = create_has_and_belongs_to_many_reflection(association_id, options, &extension)
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-        add_multiple_associated_save_callbacks(reflection.name)
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+        add_multiple_associated_save_callbacks(reflection.name) unless options[:validate] == false
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         collection_accessor_methods(reflection, HasAndBelongsToManyAssociation)
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         # Don't use a before_destroy callback since users' before_destroy
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@@ -1343,7 +1349,8 @@ module ActiveRecord
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             :uniq,
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             :finder_sql, :counter_sql,
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             :before_add, :after_add, :before_remove, :after_remove,
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-            :extend, :readonly
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+            :extend, :readonly,
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+            :validate
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           )
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           options[:extend] = create_extension_modules(association_id, extension, options[:extend])
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@@ -1353,7 +1360,7 @@ module ActiveRecord
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         def create_has_one_reflection(association_id, options)
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           options.assert_valid_keys(
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-            :class_name, :foreign_key, :remote, :select, :conditions, :order, :include, :dependent, :counter_cache, :extend, :as, :readonly
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+            :class_name, :foreign_key, :remote, :select, :conditions, :order, :include, :dependent, :counter_cache, :extend, :as, :readonly, :validate
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           )
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           create_reflection(:has_one, association_id, options, self)
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@@ -1361,7 +1368,7 @@ module ActiveRecord
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         def create_has_one_through_reflection(association_id, options)
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           options.assert_valid_keys(
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-            :class_name, :foreign_key, :remote, :select, :conditions, :order, :include, :dependent, :counter_cache, :extend, :as, :through, :source, :source_type
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+            :class_name, :foreign_key, :remote, :select, :conditions, :order, :include, :dependent, :counter_cache, :extend, :as, :through, :source, :source_type, :validate
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           )
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           create_reflection(:has_one, association_id, options, self)
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         end
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@@ -1369,7 +1376,7 @@ module ActiveRecord
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         def create_belongs_to_reflection(association_id, options)
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           options.assert_valid_keys(
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             :class_name, :foreign_key, :foreign_type, :remote, :select, :conditions, :include, :dependent,
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-            :counter_cache, :extend, :polymorphic, :readonly
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+            :counter_cache, :extend, :polymorphic, :readonly, :validate
0
           )
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           reflection = create_reflection(:belongs_to, association_id, options, self)
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@@ -1388,7 +1395,8 @@ module ActiveRecord
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             :uniq,
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             :finder_sql, :delete_sql, :insert_sql,
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             :before_add, :after_add, :before_remove, :after_remove,
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-            :extend, :readonly
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+            :extend, :readonly,
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+            :validate
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           )
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           options[:extend] = create_extension_modules(association_id, extension, options[:extend])

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@@ -409,4 +409,23 @@ class BelongsToAssociationsTest < ActiveRecord::TestCase
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     sponsor.sponsorable = new_member
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     assert_equal nil, sponsor.sponsorable_id
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   end
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+
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+  def test_save_fails_for_invalid_belongs_to
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+    assert log = AuditLog.create(:developer_id=>0,:message=>"")
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+
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+    log.developer = Developer.new
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+    assert !log.developer.valid?
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+    assert !log.valid?
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+    assert !log.save
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+    assert_equal "is invalid", log.errors.on("developer")
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+  end
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+
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+  def test_save_succeeds_for_invalid_belongs_to_with_validate_false
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+    assert log = AuditLog.create(:developer_id=>0,:message=>"")
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+
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+    log.unvalidated_developer = Developer.new
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+    assert !log.unvalidated_developer.valid?
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+    assert log.valid?
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+    assert log.save
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+  end
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 end

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@@ -342,6 +342,17 @@ class HasManyAssociationsTest < ActiveRecord::TestCase
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     assert new_firm.new_record?
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   end
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+  def test_invalid_adding_with_validate_false
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+    firm = Firm.find(:first)
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+    client = Client.new
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+    firm.unvalidated_clients_of_firm << Client.new
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+
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+    assert firm.valid?
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+    assert !client.valid?
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+    assert firm.save
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+    assert client.new_record?
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+  end
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+
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   def test_build
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     company = companies(:first_firm)
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     new_client = assert_no_queries { company.clients_of_firm.build("name" => "Another Client") }

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@@ -275,6 +275,18 @@ class HasOneAssociationsTest < ActiveRecord::TestCase
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     assert_equal "is invalid", firm.errors.on("account")
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   end
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+
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+  def test_save_succeeds_for_invalid_has_one_with_validate_false
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+    firm = Firm.find(:first)
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+    assert firm.valid?
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+
0
+    firm.unvalidated_account = Account.new
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+
0
+    assert !firm.unvalidated_account.valid?
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+    assert firm.valid?
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+    assert firm.save
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+  end
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+
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   def test_assignment_before_either_saved
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     firm = Firm.new("name" => "GlobalMegaCorp")
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     firm.account = a = Account.new("credit_limit" => 1000)

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@@ -160,9 +160,9 @@ class ReflectionTest < ActiveRecord::TestCase
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   def test_reflection_of_all_associations
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     # FIXME these assertions bust a lot
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-    assert_equal 20, Firm.reflect_on_all_associations.size
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-    assert_equal 16, Firm.reflect_on_all_associations(:has_many).size
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-    assert_equal 4, Firm.reflect_on_all_associations(:has_one).size
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+    assert_equal 22, Firm.reflect_on_all_associations.size
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+    assert_equal 17, Firm.reflect_on_all_associations(:has_many).size
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+    assert_equal 5, Firm.reflect_on_all_associations(:has_one).size
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     assert_equal 0, Firm.reflect_on_all_associations(:belongs_to).size
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   end
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@@ -26,6 +26,7 @@ class Firm < Company
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       "AND (#{QUOTED_TYPE} = 'Client' OR #{QUOTED_TYPE} = 'SpecialClient' OR #{QUOTED_TYPE} = 'VerySpecialClient' )"
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   has_many :clients_sorted_desc, :class_name => "Client", :order => "id DESC"
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   has_many :clients_of_firm, :foreign_key => "client_of", :class_name => "Client", :order => "id"
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+  has_many :unvalidated_clients_of_firm, :foreign_key => "client_of", :class_name => "Client", :validate => false
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   has_many :dependent_clients_of_firm, :foreign_key => "client_of", :class_name => "Client", :order => "id", :dependent => :destroy
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   has_many :exclusively_dependent_clients_of_firm, :foreign_key => "client_of", :class_name => "Client", :order => "id", :dependent => :delete_all
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   has_many :limited_clients, :class_name => "Client", :order => "id", :limit => 1
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@@ -46,7 +47,8 @@ class Firm < Company
0
   has_many :plain_clients, :class_name => 'Client'
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   has_many :readonly_clients, :class_name => 'Client', :readonly => true
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-  has_one :account, :foreign_key => "firm_id", :dependent => :destroy
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+  has_one :account, :foreign_key => "firm_id", :dependent => :destroy, :validate => true
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+  has_one :unvalidated_account, :foreign_key => "firm_id", :class_name => 'Account', :validate => false
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   has_one :account_with_select, :foreign_key => "firm_id", :select => "id, firm_id", :class_name=>'Account'
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   has_one :readonly_account, :foreign_key => "firm_id", :class_name => "Account", :readonly => true
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 end

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@@ -57,6 +57,7 @@ end
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0
 class AuditLog < ActiveRecord::Base
0
   belongs_to :developer
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+  belongs_to :unvalidated_developer, :class_name => 'Developer', :validate => false
0
 end
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0
 DeveloperSalary = Struct.new(:amount)