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@@ -6,7 +6,6 @@ require 'english/inflect'
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 require 'facets'
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 require 'yaml'
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 require 'fastercsv'
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-require 'lib/stone/associations_map'
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 require 'lib/stone/data_store'
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 require 'lib/stone/callbacks'
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 require 'lib/stone/resource'

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@@ -19,7 +19,6 @@ module Stone
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     # +klass+:: The class to be registered
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     def register_klass(klass)
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       self[klass.to_s.make_key] = {}
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-    
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       CALLBACKS.each do |cb_sym|
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         self[klass.to_s.make_key][cb_sym] = []
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       end

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@@ -28,7 +28,6 @@ module Stone
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         @@callbacks ||= Callbacks.new
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         @@callbacks.register_klass(base)
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-        @@map ||= AssociationsMap.new
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         @@store ||= DataStore.new
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         unless @@store.resources.include? rsrc_sym
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           @@store.resources[rsrc_sym] = DataStore.load_data(rsrc_sym)
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@@ -43,12 +42,23 @@ module Stone
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     # === Parameters
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     # +name+<String>::
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     #    
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-    def field(name, klass, *args)
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+    def field(name, klass, arg = nil)
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+      
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+      if arg && arg[:unique] == true
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+        unique = true
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+      else
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+        unique = false
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+      end
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+      
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       klass_sym = self.to_s.make_key
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       unless @@fields[klass_sym]
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-        @@fields[klass_sym] = [{:name => name, :klass => klass}]
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+        @@fields[klass_sym] = [{:name => name, 
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+                                :klass => klass, 
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+                                :unique => unique}]
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       else
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-        @@fields[klass_sym] << {:name => name, :klass => klass}
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+        @@fields[klass_sym] << {:name => name, 
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+                                :klass => klass, 
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+                                :unique => unique}
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       end
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       name = name.to_s
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@@ -72,13 +82,9 @@ module Stone
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       @id
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     end
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-    # hmmmm, this is a tricky one...
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-    def validates_uniqueness_of(field)s
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-    end
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-    
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     # Registers the given method with the current instance of Callbacks. Upon
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     # activation (in this case, right before Resource.save is executed), the
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-    # +meth+ given is called against the object begin, in this case, saved.
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+    # +meth+ given is called against the object being, in this case, saved.
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     # === Parameters
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     # +meth+:: The method to be registered
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     def before_save(meth)
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@@ -111,15 +117,35 @@ module Stone
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       @@callbacks.register(:after_delete, meth, self)
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     end
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+    # Registers a has_many relationship for +resource+
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+    # === Parameters
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+    # +resource+::
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+    #   the resource of which this class has many
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     def has_many(resource, *args)
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+      self.class_eval <<-EOS, __FILE__, __LINE__
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+        def #{resource.to_s} 
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+          #{resource.to_s.singularize.titlecase}.all("#{self.to_s.downcase}_id == "+self.id.to_s)
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+        end
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+      EOS
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     end
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     def has_one(resource, *args)
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+      field "#{resource.to_s}_id".to_sym, Fixnum
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     end
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+    # Registers a belongs_to relationship for resource
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+    # === Parameters
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+    # +resource+ :: The resource to which this class belongs
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     def belongs_to(resource, *args)
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+      field "#{resource.to_s}_id".to_sym, Fixnum
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+      self.class_eval <<-EOS, __FILE__, __LINE__
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+        def #{resource.to_s} 
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+          #{resource.to_s.titlecase}[self.#{resource.to_s}_id]
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+        end
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+      EOS
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     end
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+    # TODO: implement this
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     def has_and_belongs_to_many(resource, *args)
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     end
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@@ -141,6 +167,9 @@ module Stone
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         unless self.send(field[:name]).class == field[:klass] || self.send(field[:name]) == nil
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           return false 
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         end
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+        if field[:unique] == true
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+          return false if self.class.first("#{field[:name]} == '#{self.send(field[:name])}'")
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+        end
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       end
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       true
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     end
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@@ -153,7 +182,6 @@ module Stone
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     # === Example
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     # <tt>Author.first("name ~= /Nick/i && email.include?('gmail.com')")</tt>
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     def first(conditions = nil)
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-      objs = []
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       unless conditions
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         return @@store.resources[self.to_s.make_key].first[1]
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       else

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@@ -1,12 +1,12 @@
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 --- !ruby/object:Author 
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-created_at: 2008-04-10T13:54:55-07:00
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-email: nick@bzzybee.com
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+created_at: 2008-04-11T15:13:33-07:00
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+email: nick@cladby.com
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 errors: !ruby/object:Validatable::Errors 
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   errors: {}
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-favorite_number: 33
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+favorite_number: 46
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 id: 1
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 name: Nick DeMonner
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 times_validated_hash: 
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-  Author/Validatable::ValidatesPresenceOf/email: 2
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-  Author/Validatable::ValidatesPresenceOf/name: 2
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+  Author/Validatable::ValidatesPresenceOf/email: 1
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+  Author/Validatable::ValidatesPresenceOf/name: 1

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@@ -1,10 +1,10 @@
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 --- !ruby/object:Author 
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-created_at: 2008-04-10T13:54:55-07:00
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+created_at: 2008-04-11T15:13:33-07:00
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 email: heyo@something.com
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 errors: !ruby/object:Validatable::Errors 
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   errors: {}
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-favorite_number: 38
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+favorite_number: 17
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 id: 2
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 name: Mike McMichaels
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 times_validated_hash: 

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@@ -1,10 +1,10 @@
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 --- !ruby/object:Author 
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-created_at: 2008-04-10T13:54:55-07:00
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+created_at: 2008-04-11T15:13:33-07:00
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 email: weyo@something.com
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 errors: !ruby/object:Validatable::Errors 
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   errors: {}
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-favorite_number: 27
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+favorite_number: 37
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 id: 3
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 name: Mary Poppins
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 times_validated_hash: 

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@@ -1,10 +1,10 @@
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 --- !ruby/object:Author 
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-created_at: 2008-04-10T13:54:55-07:00
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+created_at: 2008-04-11T15:13:33-07:00
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 email: bob@gmail.com
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 errors: !ruby/object:Validatable::Errors 
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   errors: {}
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-favorite_number: 18
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+favorite_number: 39
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 id: 4
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 name: Bob Hicklesby
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 times_validated_hash: 

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@@ -1,10 +1,10 @@
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 --- !ruby/object:Author 
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-created_at: 2008-04-10T13:54:55-07:00
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+created_at: 2008-04-11T15:13:33-07:00
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 email: chariot_guy@hotmail.com
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 errors: !ruby/object:Validatable::Errors 
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   errors: {}
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-favorite_number: 31
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+favorite_number: 6
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 id: 5
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 name: Ben Hurr
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 times_validated_hash: 

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@@ -2,7 +2,7 @@ class Author #:nodoc:
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   include Stone::Resource
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   field :name, String
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-  field :email, String
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+  field :email, String, :unique => true
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   field :favorite_number, Fixnum
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   field :created_at, DateTime
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@@ -0,0 +1,6 @@
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+class Person
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+  include Stone::Resource
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+  
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+  field :name, String
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+  has_many :comments
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+end
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\ No newline at end of file

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@@ -0,0 +1,9 @@
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+class Post
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+  include Stone::Resource
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+  
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+  field :title, String
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+  field :body, String
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+  
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+  belongs_to :author
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+  has_many :comments
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+end
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\ No newline at end of file

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@@ -31,9 +31,6 @@ describe Stone::Resource do
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   end
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   it "should be invalid when a field's class does not match its declaration" do
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-    # Field was declared in resource as:
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-    # field :author, String
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-    
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     @author.name = 3
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     @author.email = "nick@cladby.com"
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     @author.save.should_not be_true
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@@ -89,7 +86,7 @@ describe Stone::Resource do
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     @author.email = "higglebear@higgly.com"
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     @author.favorite_number = 3
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     @author.save
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-    Author.first("favorite_number == 3").should be_instance_of Author
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+    Author.first("favorite_number == 3").should be_instance_of(Author)
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   end
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   it "should perform a put if the object already exists on save" do
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@@ -110,4 +107,30 @@ describe Stone::Resource do
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     @author.save
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     @author.name.should == "Ben Hurr"
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   end
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+  
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+  it "should not save if there is a duplicate and the field is unique" do
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+    @author.name = "John Doe"
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+    @author.email = "nick@bzzybee.com"
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+    @author.save.should_not be_true
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+  end
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+  
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+  it "should retrieve a parent object if belongs_to has been set" do
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+    @post = Post.new
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+    @post.title = "Stone is Cool"
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+    @post.body = "Stone is cool because..."
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+    author = Author.first("name == 'Nick DeMonner'")
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+    @post.author_id = author.id
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+    @post.save
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+    @post.author.should be_instance_of(Author)
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+  end
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+  
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+  it "should retrieve children objects id has_many has been set" do
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+    @post = Post.new
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+    @post.title = "Stone is Awesome"
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+    @post.body = "Stone is awesome because..."
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+    author = Author.first("name == 'Nick DeMonner'")
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+    @post.author_id = author.id
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+    @post.save
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+    author.posts.size.should == 2
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+  end
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 end
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\ No newline at end of file