Doctrine_manual-1-2-en

Chapter 13: Data Validation 222
{
// ...
public function setTableDefinition()
{
parent::setTableDefinition();
// ...
}
}
$this->hasColumn('username', 'string', 255, array(
'unique' => true
)
);
Listing
13-38
Here is the same example in YAML format. You can read more about YAML in the YAML
Schema Files (page 195) chapter:
---
# schema.yml
# ...
User:
columns:
username:
type: string(255)
unique: true
# ....
You should only use unique constraints for columns other than the primary key because
they are always unique already.
Regular Expression
The regular expression validator is a simple way to validate column values against your own
provided regular expression. In this example we will make sure the username contains only
valid letters or numbers.
Listing
13-39
// models/User.php
class User extends BaseUser
{
// ...
public function setTableDefinition()
{
parent::setTableDefinition();
// ...
$this->hasColumn('username', 'string', 255, array(
'regexp' => '/[a-zA-Z0-9]/'
)
);
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