[FLOW3-general] error following blog example in Flow3 guide

[indira Chavez]

Hello,
I was following the steps described in the Blog example. I was at this
page: http://flow3.typo3.org/documentation/guide/partii/controller.html after
changing the indexAction() method. However, when trying to call
myurl/setup/index I get this error:

*#23000: SQLSTATE[23000]: Integrity constraint violation: 1048 Column
'linktitle' cannot be null*

Then I went back to Post.php and I notice I didn't include the annotations
on top of the 'linkTitle' attribute. I included them (and even tried
updating the schema again) but still getting the same error.
Any ideas of what am I missing?
Thanks in advance,
Indira.