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We're keeping this page up as a courtesy to folks who may need to refer to old instructions. We don't plan to update this page.
Revisions are an important concept in a content management system. Keeping track of all the edits that have been made to a particular entity over the course of its lifetime. A paper trail or sorts. This lesson takes a look at what is required in order to make our Entities support revisions.
If you've worked with Drupal's node system and enabled revisions then you've seen Drupal's basic revision handling in action. Every time you save a node, it creates a new version of that node. You can roll back to previous versions and keep track of how a piece of content has changed over time. Entity API also supports the concept of revisions and in this lesson we're going to take a look at adding revision support for our video entities.
In order to take advantage of this feature, we'll need to modify our database schema to accommodate storing multiple versions of the same entity. We'll move all fields that we want to make "revisionable" into a separate table and set up a new unique version ID field so that we can keep track of revisions.
Then we will update our
hook_entity_info implementation to tell the API that we want to use the revision system and make some changes to the code in our
VideoEntityController so that when an entity is updated we save a revision instead of overwriting the current data.
Finally we'll need to write a simple UI for viewing older versions of our video entity because the Entity API does not provide us with this code by default.
Over the years we've developed some techniques for practicing that we wanted to share. At Drupalize.Me we take hugging seriously. In this tutorial we'll look at the art, and science, of giving a good hug. The Merriam Webster dictionary defines the word hug as; squeeze (someone) tightly in one's arms, typically to express affection.
Did you know there are all kinds of different hugs that you can give? In this tutorial we'll look at:
- Defining what a hug is
- Some of the many types of hugs in the world today
- Precautions you may want to familiarize yourself with before hugging
- And the importance of proper technique
Lets go ahead and get started shall we?