Doctrine_manual-1-2-en

Chapter 7: Defining Models 54
Column Aliases
Doctrine offers a way of setting column aliases. This can be very useful when you want to
keep the application logic separate from the database logic. For example if you want to
change the name of the database field all you need to change at your application is the
column definition.
Listing
7-1
// models/Book.php
class Book extends Doctrine_Record
{
public function setTableDefinition()
{
$this->hasColumn('bookTitle as title', 'string');
}
}
Here is the same example in YAML format. You can read more about YAML in the YAML
Schema Files (page 195) chapter:
Listing
7-2
---
# schema.yml
# ...
Book:
columns:
bookTitle:
name: bookTitle as title
type: string
Now the column in the database is named bookTitle but you can access the property on your
objects using title.
Listing
7-3
// test.php
// ...
$book = new Book();
$book->title = 'Some book';
$book->save();
Default values
Doctrine supports default values for all data types. When default value is attached to a record
column this means two things. First this value is attached to every newly created Record and
when Doctrine creates your database tables it includes the default value in the create table
statement.
Listing
7-4
// models/generated/BaseUser.php
class User extends BaseUser
{
public function setTableDefinition()
{
$this->hasColumn('username', 'string', 255, array('default' =>
'default username'));
// ...
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