Enable rating in SharePoint 2010 custom content types

To turn on ratings on a list you normally go to Library/List Settings > Rating Settings. 


 When you enable this on a list or a library SharePoint adds two columns to your list called:

  • Rating (0-5)
  • Number of Ratings

But if you want to provision the rating with your Content Types and solution packages – you have to add the two rating columns to your content type.

 Solution is here

Create an empty SharePoint project in Visual Studio 2010 and add a new Content Type project item. Select a content type to derive your new content type from. Once the item is added then you will see the content type XML manifest. Add the following rating site columns as a FeildRef.

  <FieldRef ID="{5a14d1ab-1513-48c7-97b3-657a5ba6c742}" Name="AverageRating" />
  <FieldRef ID="{b1996002-9167-45e5-a4df-b2c41c6723c7}" Name="RatingCount" />

Add a new item to the project of the type “List Definition from Content Type” and use your newly created content type. Also check the checkbox to create a list instance. Then deploy your solution to SharePoint and navigate to the new list that should have been created. If you create a new list item or upload a document you will see that the Rating has been enabled.

You can also check the Rating Settings for the list or the library and verify that Ratings has been enabled.

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