symfony1 enums with column aggregation inheritence - doctrine

Question

I have a profile table that saves all profiles for all user.
I have different types of users and want each type of user to have different select options for choosing a certain field.
So both user types can choose how long they want to register for, but the have different options - one can choose 2 years and the other cant.
The schema.yml looks something like this:
UserProfile:
columns:
username:
type: string(255)
notnull: true
unique: false
WriterUserProfile:
inheritance:
type: column_aggregation
extends: UserProfile
columns:
register_time:
type: enum
values:
- 6 months
- 1 year
- 2 years
- Other
default: other
ReaderUserProfile:
inheritance:
type: column_aggregation
extends: UserProfile
columns:
register_time:
type: enum
values:
- 6 months
- 1 year
- Other
default: other
For some reason I am unable to select the '2 year' option - the form gives an 'invalid' error.
Does the '2 years' and 'Other' coincide with eachother because they are both the 3rd option?

Answer 1

Are there other fields which are not common? This one field only not enough cause to use column aggregation. Anyway, if the same field appears in multiple sub-classes than the field should be moved up and field names should be unique among all related classes (UserProfile, WriterUserProfile, ReaderUserProfile in your case).
You can change the options of the choice field in a form:
$choices = array('0' => 'a', '1' => 'b');
$this->getWidget('register_time')->setOption('choices', $choices);
$this->getValidator('register_time')->setOption('choices', array_keys($choices));