no need for WriteStateWithoutPersistence mixin anymore (to keep adding persistence simple)

API

@@ -1,4 +1,6 @@
-Overwrite method to read the current state
+
+Overwrite method to read the current state. Used to provide another storage mechanism,
+different from the standard Rails read_attribute method.
 
   class MyClass
     include AASM
@@ -8,12 +10,25 @@ Overwrite method to read the current state
     end
   end
 
-Overwrite method to write the current state
+
+Overwrite method to write the current state (and actually persist it). Used to provide
+another storage mechanism, different from the standard Rails write_attribute method.
 
   class MyClass
     include AASM
 
     def aasm_write_state
+      # store and persist the current state manually
+    end
+  end
+
+
+Overwrite method to write the current state (without persisting it).
+
+  class MyClass
+    include AASM
+
+    def aasm_write_state_without_persistence
       # store the current state manually
     end
   end

lib/aasm/aasm.rb

@@ -91,6 +91,11 @@ module AASM
     true
   end
 
+  # may be overwritten by persistence mixins
+  def aasm_write_state_without_persistence(new_state)
+    true
+  end
+
   # deprecated
   def aasm_current_state
     # warn "#aasm_current_state is deprecated and will be removed in version 3.2.0; please use #aasm.state instead!"

lib/aasm/instance_base.rb

@@ -10,9 +10,7 @@ module AASM
     end
 
     def current_state=(state)
-      if @instance.respond_to?(:aasm_write_state_without_persistence) || @instance.private_methods.include?('aasm_write_state_without_persistence')
       @instance.aasm_write_state_without_persistence(state)
-      end
       @current_state = state
     end
 

lib/aasm/persistence/active_record_persistence.rb

@@ -6,9 +6,6 @@ module AASM
       # * extends the model with ClassMethods
       # * includes InstanceMethods
       #
-      # Unless the corresponding methods are already defined, it includes
-      # * WriteStateWithoutPersistence
-      #
       # Adds
       #
       #   before_validation :aasm_ensure_initial_state, :on => :create
@@ -33,7 +30,6 @@ module AASM
         base.send(:include, AASM::Persistence::Base)
         base.extend AASM::Persistence::ActiveRecordPersistence::ClassMethods
         base.send(:include, AASM::Persistence::ActiveRecordPersistence::InstanceMethods)
-        base.send(:include, AASM::Persistence::ActiveRecordPersistence::WriteStateWithoutPersistence) unless base.method_defined?(:aasm_write_state_without_persistence)
 
         if ActiveRecord::VERSION::MAJOR >= 3
           base.before_validation(:aasm_ensure_initial_state, :on => :create)
@@ -98,6 +94,22 @@ module AASM
           true
         end
 
+        # Writes <tt>state</tt> to the state column, but does not persist it to the database
+        #
+        #   foo = Foo.find(1)
+        #   foo.aasm_current_state # => :opened
+        #   foo.close
+        #   foo.aasm_current_state # => :closed
+        #   Foo.find(1).aasm_current_state # => :opened
+        #   foo.save
+        #   foo.aasm_current_state # => :closed
+        #   Foo.find(1).aasm_current_state # => :closed
+        #
+        # NOTE: intended to be called from an event
+        def aasm_write_state_without_persistence(state)
+          write_attribute(self.class.aasm_column, state.to_s)
+        end
+
       private
 
         # Ensures that if the aasm_state column is nil and the record is new
@@ -126,24 +138,6 @@ module AASM
         end
       end # InstanceMethods
 
-      module WriteStateWithoutPersistence
-        # Writes <tt>state</tt> to the state column, but does not persist it to the database
-        #
-        #   foo = Foo.find(1)
-        #   foo.aasm_current_state # => :opened
-        #   foo.close
-        #   foo.aasm_current_state # => :closed
-        #   Foo.find(1).aasm_current_state # => :opened
-        #   foo.save
-        #   foo.aasm_current_state # => :closed
-        #   Foo.find(1).aasm_current_state # => :closed
-        #
-        # NOTE: intended to be called from an event
-        def aasm_write_state_without_persistence(state)
-          write_attribute(self.class.aasm_column, state.to_s)
-        end
-      end
-
     end
   end
 end

lib/aasm/persistence/mongoid_persistence.rb

@@ -6,9 +6,6 @@ module AASM
       # * extends the model with ClassMethods
       # * includes InstanceMethods
       #
-      # Unless the corresponding methods are already defined, it includes
-      # * WriteStateWithoutPersistence
-      #
       # Adds
       #
       #   before_validation :aasm_ensure_initial_state
@@ -35,7 +32,6 @@ module AASM
         base.send(:include, AASM::Persistence::Base)
         base.extend AASM::Persistence::MongoidPersistence::ClassMethods
         base.send(:include, AASM::Persistence::MongoidPersistence::InstanceMethods)
-        base.send(:include, AASM::Persistence::MongoidPersistence::WriteStateWithoutPersistence) unless base.method_defined?(:aasm_write_state_without_persistence)
 
         # Mongoid's Validatable gem dependency goes not have a before_validation_on_xxx hook yet.
         # base.before_validation_on_create :aasm_ensure_initial_state
@@ -88,6 +84,22 @@ module AASM
           true
         end
 
+        # Writes <tt>state</tt> to the state column, but does not persist it to the database
+        #
+        #   foo = Foo.find(1)
+        #   foo.aasm_current_state # => :opened
+        #   foo.close
+        #   foo.aasm_current_state # => :closed
+        #   Foo.find(1).aasm_current_state # => :opened
+        #   foo.save
+        #   foo.aasm_current_state # => :closed
+        #   Foo.find(1).aasm_current_state # => :closed
+        #
+        # NOTE: intended to be called from an event
+        def aasm_write_state_without_persistence(state)
+          write_attribute(self.class.aasm_column, state.to_s)
+        end
+
       private
 
         # Ensures that if the aasm_state column is nil and the record is new
@@ -110,24 +122,6 @@ module AASM
         end
       end # InstanceMethods
 
-      module WriteStateWithoutPersistence
-        # Writes <tt>state</tt> to the state column, but does not persist it to the database
-        #
-        #   foo = Foo.find(1)
-        #   foo.aasm_current_state # => :opened
-        #   foo.close
-        #   foo.aasm_current_state # => :closed
-        #   Foo.find(1).aasm_current_state # => :opened
-        #   foo.save
-        #   foo.aasm_current_state # => :closed
-        #   Foo.find(1).aasm_current_state # => :closed
-        #
-        # NOTE: intended to be called from an event
-        def aasm_write_state_without_persistence(state)
-          write_attribute(self.class.aasm_column, state.to_s)
-        end
-      end
-
       module NamedScopeMethods
         def aasm_state_with_named_scope name, options = {}
           aasm_state_without_named_scope name, options

spec/models/active_record/api.rb

@@ -1,5 +1,5 @@
 class DefaultState
-  attr_accessor :transient_store
+  attr_accessor :transient_store, :persisted_store
   include AASM
   aasm do
     state :alpha, :initial => true
@@ -12,7 +12,7 @@ class DefaultState
 end
 
 class ProvidedState
-  attr_accessor :transient_store
+  attr_accessor :transient_store, :persisted_store
   include AASM
   aasm do
     state :alpha, :initial => true
@@ -28,12 +28,16 @@ class ProvidedState
   end
 
   def aasm_write_state(new_state)
+    @persisted_store = new_state
+  end
+
+  def aasm_write_state_without_persistence(new_state)
     @transient_store = new_state
   end
 end
 
 class PersistedState < ActiveRecord::Base
-  attr_accessor :transient_store
+  attr_accessor :transient_store, :persisted_store
   include AASM
   aasm do
     state :alpha, :initial => true
@@ -46,7 +50,7 @@ class PersistedState < ActiveRecord::Base
 end
 
 class ProvidedAndPersistedState < ActiveRecord::Base
-  attr_accessor :transient_store
+  attr_accessor :transient_store, :persisted_store
   include AASM
   aasm do
     state :alpha, :initial => true
@@ -62,6 +66,10 @@ class ProvidedAndPersistedState < ActiveRecord::Base
   end
 
   def aasm_write_state(new_state)
+    @persisted_store = new_state
+  end
+
+  def aasm_write_state_without_persistence(new_state)
     @transient_store = new_state
   end
 end

spec/unit/api_spec.rb

@@ -19,28 +19,54 @@ describe "reading the current state" do
   end
 end
 
-describe "writing the current state" do
+describe "writing and persisting the current state" do
   it "uses the AASM default" do
     o = DefaultState.new
     o.release!
-    o.transient_store.should be_nil
+    o.persisted_store.should be_nil
   end
 
   it "uses the provided method" do
     o = ProvidedState.new
     o.release!
-    o.transient_store.should eql :beta
+    o.persisted_store.should eql :beta
   end
 
   it "uses the persistence storage" do
     o = PersistedState.new
     o.release!
-    o.transient_store.should be_nil
+    o.persisted_store.should be_nil
   end
 
   it "uses the provided method even if persisted" do
     o = ProvidedAndPersistedState.new
     o.release!
+    o.persisted_store.should eql :beta
+  end
+end
+
+describe "writing the current state without persisting it" do
+  it "uses the AASM default" do
+    o = DefaultState.new
+    o.release
+    o.transient_store.should be_nil
+  end
+
+  it "uses the provided method" do
+    o = ProvidedState.new
+    o.release
+    o.transient_store.should eql :beta
+  end
+
+  it "uses the persistence storage" do
+    o = PersistedState.new
+    o.release
+    o.transient_store.should be_nil
+  end
+
+  it "uses the provided method even if persisted" do
+    o = ProvidedAndPersistedState.new
+    o.release
     o.transient_store.should eql :beta
   end
 end

spec/unit/persistence/active_record_persistence_spec.rb

@@ -14,30 +14,6 @@ shared_examples_for "aasm model" do
   end
 end
 
-describe "class methods for classes without own read or write state" do
-  let(:klass) {Gate}
-  it_should_behave_like "aasm model"
-  it "should include all persistence mixins" do
-    klass.included_modules.should be_include(AASM::Persistence::ActiveRecordPersistence::WriteStateWithoutPersistence)
-  end
-end
-
-describe "class methods for classes with own write state" do
-  let(:klass) {Writer}
-  it_should_behave_like "aasm model"
-  it "should include include all persistence mixins but write state" do
-    klass.included_modules.should be_include(AASM::Persistence::ActiveRecordPersistence::WriteStateWithoutPersistence)
-  end
-end
-
-describe "class methods for classes without persistence" do
-  let(:klass) {Transient}
-  it_should_behave_like "aasm model"
-  it "should include all mixins but persistence" do
-    klass.included_modules.should_not be_include(AASM::Persistence::ActiveRecordPersistence::WriteStateWithoutPersistence)
-  end
-end
-
 describe "instance methods" do
   let(:gate) {Gate.new}