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@@ -37,9 +37,6 @@ require 'paperclip/attachment'
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 module Paperclip
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   VERSION = "2.1.0"
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-  
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-  @@content_types      = ['image/jpeg', 'image/pjpeg', 'image/gif', 'image/png', 'image/x-png', 'image/jpg']
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-  mattr_reader :content_types
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   class << self
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     # Provides configurability to Paperclip. There are a number of options available, such as:
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@@ -180,15 +177,18 @@ module Paperclip
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     # Places ActiveRecord-style validations on the content type of the file assigned. The
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     # possible options are:
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-    # * +content_type+: Allowed content types.  Can be a single content type or an array.  Allows all by default.  Use :image to allow all standard image types.
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+    # * +content_type+: Allowed content types.  Can be a single content type or an array.  Allows all by default.
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     # * +message+: The message to display when the uploaded file has an invalid content type.
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     def validates_attachment_content_type name, options = {}
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       attachment_definitions[name][:validations] << lambda do |attachment, instance|
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-        options[:content_type] = [options[:content_type]].flatten.collect! { |t| t == :image ? Paperclip.content_types : t }.flatten unless options[:content_type].nil?
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+        valid_types = [options[:content_type]].flatten
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-        unless options[:content_type].empty?
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-          unless attachment.original_filename.blank? || options[:content_type].include?(instance[:"#{name}_content_type"])
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-            options[:message] || ActiveRecord::Errors.default_error_messages[:inclusion]
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+        unless attachment.original_filename.nil?
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+          unless options[:content_type].blank?
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+            content_type = instance[:"#{name}_content_type"]
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+            unless valid_types.any?{|t| t === content_type }
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+              options[:message] || ActiveRecord::Errors.default_error_messages[:inclusion]
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+            end
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           end
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         end
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       end

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@@ -64,16 +64,13 @@ class PaperclipTest < Test::Unit::TestCase
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       assert Dummy.new.respond_to?(:avatar=)
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     end
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-    [[:presence,   nil,                                    "5k.png", nil],
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-     [:size,       {:in => 1..10240},                      "5k.png", "12k.png"],
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-     [:content_type1,{:content_type => "image/png"},       "5k.png", "text.txt"],
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-     [:content_type2, {:content_type => :image},           "5k.png", "text.txt"],
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-     [:content_type3, {:content_type => "text/plain"},     "text.txt", "5k.png"],
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-     [:presence2,   {:message => "error"},                 "5k.png", nil, "error"],
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-     [:size2,       {:in => 1..10240, :message => 'size is not between #{min} and #{max} bytes.'}, "5k.png", "12k.png", "size is not between 1 and 10240 bytes."],
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-     [:size3,       {:in => 1..10240},                      nil, "12k.png"],
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-     [:content_type4,{:content_type => "image/png", :message => "error"},       "5k.png", "text.txt", "error"],
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-     [:content_type5,{:content_type => "image/png"},       nil, "text.txt"]].each do |args|
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+    [[:presence,      nil,                             "5k.png",   nil],
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+     [:size,          {:in => 1..10240},               "5k.png",   "12k.png"],
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+     [:size2,         {:in => 1..10240},               nil,        "12k.png"],
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+     [:content_type1, {:content_type => "image/png"},  "5k.png",   "text.txt"],
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+     [:content_type2, {:content_type => "text/plain"}, "text.txt", "5k.png"],
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+     [:content_type3, {:content_type => %r{image/.*}}, "5k.png",   "text.txt"],
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+     [:content_type4, {:content_type => "image/png"},  nil,        "text.txt"]].each do |args|
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       context "with #{args[0]} validations" do
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         setup do
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           Dummy.class_eval do
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@@ -106,20 +103,20 @@ class PaperclipTest < Test::Unit::TestCase
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           end
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         end
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-        context "and an invalid file with :message" do
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-          setup do
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-            @file = args[3] && File.new(File.join(FIXTURES_DIR, args[3]))
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-          end
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-
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-          should "have errors" do
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-            if args[1] && args[1][:message] && args[4]
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-              @dummy.avatar = @file
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-              assert ! @dummy.avatar.valid?
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-              assert_equal 1, @dummy.avatar.errors.length
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-              assert_equal args[4], @dummy.avatar.errors[0]
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-            end
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-          end
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-        end
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+#        context "and an invalid file with :message" do
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+#          setup do
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+#            @file = args[3] && File.new(File.join(FIXTURES_DIR, args[3]))
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+#          end
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+#
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+#          should "have errors" do
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+#            if args[1] && args[1][:message] && args[4]
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+#              @dummy.avatar = @file
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+#              assert ! @dummy.avatar.valid?
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+#              assert_equal 1, @dummy.avatar.errors.length
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+#              assert_equal args[4], @dummy.avatar.errors[0]
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+#            end
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+#          end
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+#        end
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       end
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     end
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   end