Doctrine_manual-1-2-en

Chapter 13: Data Validation 226
}
}
$this->hasColumn('name', 'string', 255);
$this->hasColumn('code', 'string', 2, array(
'usstate' => true
)
);
Listing
13-50
Listing
13-51
Here is the same example in YAML format. You can read more about YAML in the YAML
Schema Files (page 195) chapter:
---
# schema.yml
# ...
State:
columns:
name: string(255)
code:
type: string(2)
usstate: true
Now if I try and save a State with an invalid state code then the validation will fail.
$state = new State();
$state->name = 'Tennessee';
$state->code = 'ZZ';
if ( ! $state->isValid()) {
echo 'State is invalid because "ZZ" is not a valid state code';
}
Conclusion
If we want Doctrine to validate our data before being persisted to the database, now we have
the knowledge on how to do it. We can use the validators that are provided with the Doctrine
core to perform common validations of our data.
The next chapter (page 231) is an important one as we will discuss a great feature of Doctrine,
Inheritance (page 231)! Inheritance is a great way accomplish complex functionality with
minimal code. After we discuss inheritance we will move on to a custom strategy that
provides even better functionality than inheritance, called Behaviors (page 239).
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