Added validation callbacks to extended documents and casted models

README.md

@@ -68,10 +68,13 @@ CouchRest::Model has been deprecated and replaced by CouchRest::ExtendedDocument
 
 ### Callbacks
 
-`CouchRest::ExtendedDocuments` instances have 2 callbacks already defined for you:
-    `create_callback`, `save_callback`, `update_callback` and `destroy_callback`
+`CouchRest::ExtendedDocuments` instances have 4 callbacks already defined for you:
+    `validate_callback`, `create_callback`, `save_callback`, `update_callback` and `destroy_callback`
     
-In your document inherits from `CouchRest::ExtendedDocument`, define your callback as follows:
+`CouchRest::CastedModel` instances have 1 callback already defined for you:
+    `validate_callback`
+    
+Define your callback as follows:
 
     save_callback :before, :generate_slug_from_name
     

lib/couchrest/mixins/validation.rb

@@ -51,6 +51,9 @@ module CouchRest
     def self.included(base)
       base.extlib_inheritable_accessor(:auto_validation)
       base.class_eval <<-EOS, __FILE__, __LINE__
+          # Callbacks
+          define_callbacks :validate
+          
           # Turn off auto validation by default
           self.auto_validation ||= false
           
@@ -72,6 +75,7 @@ module CouchRest
       
       base.extend(ClassMethods)
       base.class_eval <<-EOS, __FILE__, __LINE__
+        define_callbacks :validate
         if method_defined?(:_run_save_callbacks)
           save_callback :before, :check_validations
         end
@@ -147,7 +151,9 @@ module CouchRest
           valid = recursive_valid?(prop, context, valid) && valid
         end
       end
-      target.class.validators.execute(context, target) && valid
+      target._run_validate_callbacks do
+        target.class.validators.execute(context, target) && valid
+      end
     end
 
 

lib/couchrest/more/casted_model.rb

@@ -4,6 +4,7 @@ module CouchRest
   module CastedModel
     
     def self.included(base)
+      base.send(:include, CouchRest::Callbacks)
       base.send(:include, CouchRest::Mixins::Properties)
       base.send(:attr_accessor, :casted_by)
       base.send(:attr_accessor, :document_saved)

spec/couchrest/more/casted_model_spec.rb

@@ -23,6 +23,26 @@ class DummyModel < CouchRest::ExtendedDocument
   property :keywords,         :cast_as => ["String"]
 end
 
+class CastedCallbackDoc < CouchRest::ExtendedDocument
+  use_database TEST_SERVER.default_database
+  raise "Default DB not set" if TEST_SERVER.default_database.nil?
+  property :callback_model, :cast_as => 'WithCastedCallBackModel'
+end
+class WithCastedCallBackModel < Hash
+  include CouchRest::CastedModel
+  include CouchRest::Validation
+  property :name
+  property :run_before_validate
+  property :run_after_validate
+  
+  validate_callback :before do |object|
+    object.run_before_validate = true
+  end
+  validate_callback :after do |object| 
+    object.run_after_validate = true
+  end
+end
+
 describe CouchRest::CastedModel do
   
   describe "A non hash class including CastedModel" do
@@ -354,4 +374,25 @@ describe CouchRest::CastedModel do
       lambda{@toy.base_doc.save!}.should_not raise_error
     end
   end
+  
+  describe "callbacks" do
+    before(:each) do
+      @doc = CastedCallbackDoc.new
+      @model = WithCastedCallBackModel.new
+      @doc.callback_model = @model
+    end
+    
+    describe "validate" do
+      it "should run before_validate before validating" do
+        @model.run_before_validate.should be_nil
+        @model.should be_valid
+        @model.run_before_validate.should be_true
+      end
+      it "should run after_validate after validating" do
+        @model.run_after_validate.should be_nil
+        @model.should be_valid
+        @model.run_after_validate.should be_true
+      end      
+    end
+  end
 end

spec/couchrest/more/extended_doc_spec.rb

@@ -17,8 +17,11 @@ describe "ExtendedDocument" do
   end
   
   class WithCallBacks < CouchRest::ExtendedDocument
+    include ::CouchRest::Validation
     use_database TEST_SERVER.default_database
     property :name
+    property :run_before_validate
+    property :run_after_validate
     property :run_before_save
     property :run_after_save
     property :run_before_create
@@ -26,6 +29,12 @@ describe "ExtendedDocument" do
     property :run_before_update
     property :run_after_update
     
+    validate_callback :before do |object|
+      object.run_before_validate = true
+    end
+    validate_callback :after do |object| 
+      object.run_after_validate = true
+    end
     save_callback :before do |object| 
       object.run_before_save = true
     end
@@ -504,6 +513,19 @@ describe "ExtendedDocument" do
       @doc = WithCallBacks.new
     end
     
+    
+    describe "validate" do
+      it "should run before_validate before validating" do
+        @doc.run_before_validate.should be_nil
+        @doc.should be_valid
+        @doc.run_before_validate.should be_true
+      end
+      it "should run after_validate after validating" do
+        @doc.run_after_validate.should be_nil
+        @doc.should be_valid
+        @doc.run_after_validate.should be_true
+      end
+    end
     describe "save" do
       it "should run the after filter after saving" do
         @doc.run_after_save.should be_nil