force configuration to identify what fields to strip

README.rdoc

@@ -4,22 +4,12 @@ Simple utility to strip whitespace from string attributes.
 
 = Installation
 
-Command line installation
-
-  sudo gem install wireframe-acts_as_stripped
-
-Rails environment.rb configuration
-
-  config.gem 'wireframe-acts_as_stripped', :source => 'http://gems.github.com', :lib => 'acts_as_stripped'
+Bundler configuration
+  gem 'acts_as_stripped'
 
 = Usage
 
-  # strip whitespace from *all* string attributes
-  class User < ActiveRecord::Base
-    acts_as_stripped
-  end
-
-  # strip whitespace from *select* string attributes
+  # strip whitespace from specified string attributes
   class Post < ActiveRecord::Base
     acts_as_stripped :title, :summary
   end

lib/acts_as_stripped.rb

@@ -21,13 +21,10 @@ module SingletonMethods
   module InstanceMethods
     private
     def strip_fields
-      strippable_attributes.each do |attr|
+      self.acts_as_stripped_attributes.each do |attr|
         self[attr.to_s].strip! unless self[attr.to_s].nil?
       end
     end
-    def strippable_attributes
-      self.acts_as_stripped_attributes || self.attributes.keys.select {|attr| self[attr].respond_to?(:strip!) }
-    end
   end
 end
 

test/acts_as_stripped_test.rb

@@ -1,57 +1,32 @@
 require 'test_helper'
 
 ActiveRecord::Schema.define(:version => 1) do
-  create_table :users, :force => true do |t|
-    t.column :first_name, :string
-    t.column :last_name, :string
-    t.column :logged_in_at, :datetime
-  end
   create_table :posts, :force => true do |t|
     t.column :title, :string
     t.column :body, :string
   end
 end
 
-class User < ActiveRecord::Base
-  acts_as_stripped
-end
-
 class Post < ActiveRecord::Base
   acts_as_stripped :title
 end
 
 class ActsAsStrippedTest < Test::Unit::TestCase
-  context 'a basic user instance' do
+  context 'a basic post instance' do
     setup do
-      @user = User.new
-    end
-    should "strips all string attributes of extra whitespace" do
-      @user.first_name = '  ryan  '
-      @user.last_name = '  sonnek  '
-      @user.logged_in_at = Time.now
-
-      @user.save!
-      assert_equal 'ryan', @user.first_name
-      assert_equal 'sonnek', @user.last_name
+      @post = Post.new
     end
-
-    should "not fail if any attributes are nil" do
-      @user.first_name = '  shaq  '
-      @user.last_name = nil
-      @user.logged_in_at = Time.now
-
-      assert_nothing_raised do
-        @user.save!
-      end
+    should 'strip whitespace from title' do
+      @post.title = '  hello world  '
+      @post.save!
 
-      assert_equal 'shaq', @user.first_name
-      assert_nil @user.last_name
+      assert_equal 'hello world', @post.title
     end
-  end
-
-  context 'a basic post instance' do
-    setup do
-      @post = Post.new
+    should 'not strip whitespace from body' do
+      @post.body = '  awesome  '
+      @post.save!
+      
+      assert_equal '  awesome  ', @post.body
     end
     should 'not fail if title is nil' do
       @post.title = nil
@@ -60,14 +35,5 @@ class ActsAsStrippedTest < Test::Unit::TestCase
       end
       assert_nil @post.title
     end
-
-    should 'strip whitespace only from title' do
-      @post.title = '  hello world  '
-      @post.body = '  awesome  '
-      @post.save!
-
-      assert_equal 'hello world', @post.title
-      assert_equal '  awesome  ', @post.body
-    end
   end
 end