changed parameter passing for model attachment methods to be more flexible

lib/couchrest/core/model.rb

@@ -506,10 +506,13 @@ module CouchRest
     end
 
     # creates a file attachment to the current doc
-    def create_attachment(file, attachment_name)
-      return if has_attachment?(attachment_name)
+    def create_attachment(args={})
+      raise ArgumentError unless args[:file] && args[:name]
+      return if has_attachment?(args[:name])
       self['_attachments'] ||= {}
-      set_attachment_attr(file, attachment_name)
+      set_attachment_attr(args)
+    rescue ArgumentError => e
+      raise ArgumentError, 'You must specify :file and :name'
     end
     
     # reads the data from an attachment
@@ -518,10 +521,13 @@ module CouchRest
     end
     
     # modifies a file attachment on the current doc
-    def update_attachment(file, attachment_name)
-      return unless has_attachment?(attachment_name)
-      delete_attachment(attachment_name)
-      set_attachment_attr(file, attachment_name)
+    def update_attachment(args={})
+      raise ArgumentError unless args[:file] && args[:name]
+      return unless has_attachment?(args[:name])
+      delete_attachment(args[:name])
+      set_attachment_attr(args)
+    rescue ArgumentError => e
+      raise ArgumentError, 'You must specify :file and :name'
     end
     
     # deletes a file attachment from the current doc
@@ -595,10 +601,11 @@ module CouchRest
         'text\/plain' : MIME::Types.type_for(file.path).first.content_type.gsub(/\//,'\/')
     end
 
-    def set_attachment_attr(file, attachment_name)
-      self['_attachments'][attachment_name] = {
-        'content-type' => get_mime_type(file),
-        'data'         => encode_attachment(file.read)
+    def set_attachment_attr(args)
+      content_type = args[:content_type] ? args[:content_type] : get_mime_type(args[:file])
+      self['_attachments'][args[:name]] = {
+        'content-type' => content_type,
+        'data'         => encode_attachment(args[:file].read)
       }
     end
 

spec/couchrest/core/model_spec.rb

@@ -734,7 +734,7 @@ describe CouchRest::Model do
       @obj.save.should == true
       @file = File.open(FIXTURE_PATH + '/attachments/test.html')
       @attachment_name = 'my_attachment'
-      @obj.create_attachment(@file, @attachment_name)
+      @obj.create_attachment(:file => @file, :name => @attachment_name)
     end
     
     it 'should return false if there is no attachment' do
@@ -762,23 +762,37 @@ describe CouchRest::Model do
       @obj = Basic.new
       @obj.save.should == true
       @file_ext = File.open(FIXTURE_PATH + '/attachments/test.html')
-      @file_no_text = File.open(FIXTURE_PATH + '/attachments/README')
+      @file_no_ext = File.open(FIXTURE_PATH + '/attachments/README')
       @attachment_name = 'my_attachment'
+      @content_type = 'media/mp3'
     end
     
     it "should create an attachment from file with an extension" do
-      @obj.create_attachment(@file_ext, @attachment_name)
+      @obj.create_attachment(:file => @file_ext, :name => @attachment_name)
       @obj.save.should == true
       reloaded_obj = Basic.get(@obj.id)
       reloaded_obj['_attachments'][@attachment_name].should_not be_nil
     end
     
     it "should create an attachment from file without an extension" do
-      @obj.create_attachment(@file_no_text, @attachment_name)
+      @obj.create_attachment(:file => @file_no_ext, :name => @attachment_name)
       @obj.save.should == true
       reloaded_obj = Basic.get(@obj.id)
       reloaded_obj['_attachments'][@attachment_name].should_not be_nil
     end
+    
+    it 'should raise ArgumentError if :file is missing' do
+      lambda{ @obj.create_attachment(:name => @attachment_name) }.should raise_error
+    end
+    
+    it 'should raise ArgumentError if :name is missing' do
+      lambda{ @obj.create_attachment(:file => @file_ext) }.should raise_error
+    end
+    
+    it 'should set the content-type if passed' do
+      @obj.create_attachment(:file => @file_ext, :name => @attachment_name, :content_type => @content_type)
+      @obj['_attachments'][@attachment_name]['content-type'].should == @content_type
+    end
   end
   
   describe 'reading, updating, and deleting an attachment' do
@@ -786,9 +800,10 @@ describe CouchRest::Model do
       @obj = Basic.new
       @file = File.open(FIXTURE_PATH + '/attachments/test.html')
       @attachment_name = 'my_attachment'
-      @obj.create_attachment(@file, @attachment_name)
+      @obj.create_attachment(:file => @file, :name => @attachment_name)
       @obj.save.should == true
       @file.rewind
+      @content_type = 'media/mp3'
     end
     
     it 'should read an attachment that exists' do
@@ -798,7 +813,7 @@ describe CouchRest::Model do
     it 'should update an attachment that exists' do
       file = File.open(FIXTURE_PATH + '/attachments/README')
       @file.should_not == file
-      @obj.update_attachment(file, @attachment_name)
+      @obj.update_attachment(:file => file, :name => @attachment_name)
       @obj.save
       reloaded_obj = Basic.get(@obj.id)
       file.rewind
@@ -806,6 +821,13 @@ describe CouchRest::Model do
       reloaded_obj.read_attachment(@attachment_name).should == file.read
     end
     
+    it 'should se the content-type if passed' do
+      file = File.open(FIXTURE_PATH + '/attachments/README')
+      @file.should_not == file
+      @obj.update_attachment(:file => file, :name => @attachment_name, :content_type => @content_type)
+      @obj['_attachments'][@attachment_name]['content-type'].should == @content_type
+    end
+    
     it 'should delete an attachment that exists' do
       @obj.delete_attachment(@attachment_name)
       @obj.save