Doctrine table class inheritance when one subclass has no extra attributes

Question

I\'m having a problem with my mapping. I can\'t get it to work. I have an abstract base class like so:

/**
 * @Entity
 * @Table(name=\"actions\")
 * @Inheritance         


        

Answer 1

You are using joined inheritance model (class table inheritance), which uses a separate table for parent and each child. If you don't specify any fields in the child class, Doctrine will just create a table only containing ID field.

And a parent class can only use one type of inheritance, either class table inheritance or single table inheritance.

In that case, if you don't want to have a table with only id column in it, you need to change your data model.