Added JSON serialization, Closes carrierwaveuploader#41

Rakefile

@@ -30,6 +30,7 @@ $hoe = Hoe.spec 'carrierwave' do
   self.extra_dev_deps << ['mongoid', '>=0.10.4']
   self.extra_dev_deps << ['aws-s3', '>=0.6.2']
   self.extra_dev_deps << ['timecop', '>=0.3.4']
+  self.extra_dev_deps << ['json', '>=1.1.9']
   self.extra_rdoc_files << 'README.rdoc'
 end
 

lib/carrierwave/uploader/url.rb

@@ -19,6 +19,15 @@ def url
 
       alias_method :to_s, :url
 
+      ##
+      # === Returns
+      #
+      # [String] A JSON serializtion containing this uploader's URL
+      #
+      def to_json
+        { 'url' => url }.to_json
+      end
+
     end # Url
   end # Uploader
-end # CarrierWave
+end # CarrierWave

spec/spec_helper.rb

@@ -13,6 +13,7 @@
 require 'carrierwave'
 require 'timecop'
 require 'time'
+require 'json'
 
 require 'logger'
 

spec/uploader/url_spec.rb

@@ -63,6 +63,21 @@
     end
   end
 
+  describe '#to_json' do
+    before do
+      CarrierWave.stub!(:generate_cache_id).and_return('20071201-1234-345-2255')
+    end
+
+    it "should return a hash with a blank URL" do
+      JSON.parse(@uploader.to_json)['url'].should be_nil
+    end
+
+    it "should return a hash including a cached URL" do
+      @uploader.cache!(File.open(file_path('test.jpg')))
+      JSON.parse(@uploader.to_json)['url'].should == '/uploads/tmp/20071201-1234-345-2255/test.jpg'
+    end
+  end
+
   describe '#to_s' do
     before do
       CarrierWave.stub!(:generate_cache_id).and_return('20071201-1234-345-2255')
@@ -84,4 +99,4 @@
     end
   end
 
-end
+end