Implement persisted? method. Closes #17

.gitignore

 pkg/*
 *.gem
 .bundle
+tmp

.rvmrc

+#!/usr/bin/env bash
+
+# This is an RVM Project .rvmrc file, used to automatically load the ruby
+# development environment upon cd'ing into the directory
+
+# First we specify our desired <ruby>[@<gemset>], the @gemset name is optional.
+environment_id="ruby-1.9.2@paranoia"
+
+#
+# First we attempt to load the desired environment directly from the environment
+# file. This is very fast and efficicent compared to running through the entire
+# CLI and selector. If you want feedback on which environment was used then
+# insert the word 'use' after --create as this triggers verbose mode.
+#
+if [[ -d "${rvm_path:-$HOME/.rvm}/environments" \
+  && -s "${rvm_path:-$HOME/.rvm}/environments/$environment_id" ]] ; then
+  \. "${rvm_path:-$HOME/.rvm}/environments/$environment_id"
+
+  [[ -s ".rvm/hooks/after_use" ]] && . ".rvm/hooks/after_use"
+else
+  # If the environment file has not yet been created, use the RVM CLI to select.
+  rvm --create use  "$environment_id"
+fi
+
+#
+# If you use an RVM gemset file to install a list of gems (*.gems), you can have
+# it be automatically loaded. Uncomment the following and adjust the filename if
+# necessary.
+#
+# filename=".gems"
+# if [[ -s "$filename" ]] ; then
+#   rvm gemset import "$filename" | grep -v already | grep -v listed | grep -v complete | sed '/^$/d'
+# fi
+
+#
+# If you use bundler and would like to run bundle each time you enter the
+# directory, you can uncomment the following code.
+#
+# Ensure that Bundler is installed. Install it if it is not.
+if ! command -v bundle >/dev/null; then
+   printf "The rubygem 'bundler' is not installed. Installing it now.\n"
+   gem install bundler
+fi
+
+# Bundle while reducing excess noise.
+printf "Bundling your gems. This may take a few minutes on a fresh clone.\n"
+bundle | grep -v '^Using ' | grep -v ' is complete' | sed '/^$/d'
+

Gemfile.lock

@@ -7,22 +7,24 @@ PATH
 GEM
   remote: http://rubygems.org/
   specs:
-    activemodel (3.0.8)
-      activesupport (= 3.0.8)
-      builder (~> 2.1.2)
-      i18n (~> 0.5.0)
-    activerecord (3.0.8)
-      activemodel (= 3.0.8)
-      activesupport (= 3.0.8)
-      arel (~> 2.0.10)
-      tzinfo (~> 0.3.23)
-    activesupport (3.0.8)
-    arel (2.0.10)
-    builder (2.1.2)
-    i18n (0.5.0)
+    activemodel (3.2.0)
+      activesupport (= 3.2.0)
+      builder (~> 3.0.0)
+    activerecord (3.2.0)
+      activemodel (= 3.2.0)
+      activesupport (= 3.2.0)
+      arel (~> 3.0.0)
+      tzinfo (~> 0.3.29)
+    activesupport (3.2.0)
+      i18n (~> 0.6)
+      multi_json (~> 1.0)
+    arel (3.0.0)
+    builder (3.0.0)
+    i18n (0.6.0)
+    multi_json (1.0.4)
     rake (0.8.7)
-    sqlite3 (1.3.3)
-    tzinfo (0.3.28)
+    sqlite3 (1.3.5)
+    tzinfo (0.3.31)
 
 PLATFORMS
   ruby

lib/paranoia.rb

@@ -42,4 +42,11 @@ class ActiveRecord::Base
 
   def self.paranoid? ; false ; end
   def paranoid? ; self.class.paranoid? ; end
+
+  # Override the persisted method to allow for the paranoia gem.
+  # If a paranoid record is selected, then we only want to check
+  # if it's a new record, not if it is "destroyed".
+  def persisted?
+    paranoid? ? !new_record? : super
+  end
 end

test/paranoia_test.rb

@@ -30,6 +30,17 @@ class ParanoiaTest < Test::Unit::TestCase
     assert_equal true, ParanoidModel.new.paranoid?
   end
 
+  def test_paranoid_models_to_param
+    model = ParanoidModel.new
+    model.save
+    to_param = model.to_param
+
+    model.destroy
+
+    assert_not_equal nil, model.to_param
+    assert_equal to_param, model.to_param
+  end
+
   def test_destroy_behavior_for_plain_models
     model = PlainModel.new
     assert_equal 0, model.class.count