Can I access discriminator field from php in doctrine2?
Solution 1:
Extending what beberlei said, you could declare some constants in the Attribute class, and an abstract getType()
function. Then, overload it in every derived attribute class.
Something like:
abstract class Attribute {
const TYPE_BOOL = 0;
const TYPE_INT = 1;
...
abstract public function getType();
}
class BooleanAttribute extends Attribute {
public function getType() {
return parent::TYPE_BOOL;
}
}
Solution 2:
Here is how I'd do.
First, you made an AttributeInterface
, to be sure that all future new Attribute types will implement the need method :
interface AttributeInterface
{
/**
* Return the attribute type
*/
public function getType();
}
Then you create the Attribute
abstract class implementing the AttributeInterface
interface.
Use the constants in the @DiscrimatorMap
call for some consistency
/**
* Attribute
* ...
* @DiscriminatorColumn(name="type", type="string")
* @DiscriminatorMap({Attribute::TYPE_TEXT = "TextAttribute", Attribute::TYPE_BOOLEAN = "BooleanAttribute", Attribute::TYPE_NUMERIC = "NumericAttribute", Attribute::TYPE_DATE = "DateAttribute"})
*/
abstract class Attribute implements AttributeInterface
{
const TYPE_TEXT = 'text';
const TYPE_BOOLEAN = 'boolean';
const TYPE_NUMERIC = 'numeric';
const TYPE_DATE = 'date';
}
Finally, you create all needed classes, extending Attribute
class and implementing the getType()
method
/**
* TextAttribute
*
* @ORM\Entity
*/
class TextAttribute extends Attribute
{
public function getType()
{
return $this::TYPE_TEXT;
}
}
/**
* BooleanAttribute
*
* @ORM\Entity
*/
class BooleanAttribute extends Attribute
{
public function getType()
{
return $this::TYPE_BOOLEAN;
}
}
/**
* NumericAttribute
*
* @ORM\Entity
*/
class NumericAttribute extends Attribute
{
public function getType()
{
return $this::TYPE_NUMERIC;
}
}
/**
* DateAttribute
*
* @ORM\Entity
*/
class DateAttribute extends Attribute
{
public function getType()
{
return $this::TYPE_DATE;
}
}
// And so on...