148 lines
4.6 KiB
ReStructuredText
148 lines
4.6 KiB
ReStructuredText
Implementing a NamingStrategy
|
|
==============================
|
|
|
|
Using a naming strategy you can provide rules for automatically generating
|
|
database identifiers, columns and tables names
|
|
when the table/column name is not given.
|
|
This feature helps reduce the verbosity of the mapping document,
|
|
eliminating repetitive noise (eg: ``TABLE_``).
|
|
|
|
|
|
Configuring a naming strategy
|
|
-----------------------------
|
|
The default strategy used by Doctrine is quite minimal.
|
|
|
|
By default the ``Doctrine\ORM\Mapping\DefaultNamingStrategy``
|
|
uses the simple class name and the attributes names to generate tables and columns
|
|
|
|
You can specify a different strategy by calling ``Doctrine\ORM\Configuration#setNamingStrategy()`` :
|
|
|
|
.. code-block:: php
|
|
|
|
<?php
|
|
$namingStrategy = new MyNamingStrategy();
|
|
$configuration()->setNamingStrategy($namingStrategy);
|
|
|
|
Underscore naming strategy
|
|
---------------------------
|
|
|
|
``\Doctrine\ORM\Mapping\UnderscoreNamingStrategy`` is a built-in strategy
|
|
that might be a useful if you want to use a underlying convention.
|
|
|
|
.. code-block:: php
|
|
|
|
<?php
|
|
$namingStrategy = new \Doctrine\ORM\Mapping\UnderscoreNamingStrategy(CASE_UPPER);
|
|
$configuration()->setNamingStrategy($namingStrategy);
|
|
|
|
Then SomeEntityName will generate the table SOME_ENTITY_NAME when CASE_UPPER
|
|
or some_entity_name using CASE_LOWER is given.
|
|
|
|
|
|
Naming strategy interface
|
|
-------------------------
|
|
The interface ``Doctrine\ORM\Mapping\NamingStrategy`` allows you to specify
|
|
a "naming standard" for database tables and columns.
|
|
|
|
.. code-block:: php
|
|
|
|
<?php
|
|
/**
|
|
* Return a table name for an entity class
|
|
*
|
|
* @param string $className The fully-qualified class name
|
|
* @return string A table name
|
|
*/
|
|
function classToTableName($className);
|
|
|
|
/**
|
|
* Return a column name for a property
|
|
*
|
|
* @param string $propertyName A property
|
|
* @return string A column name
|
|
*/
|
|
function propertyToColumnName($propertyName);
|
|
|
|
/**
|
|
* Return the default reference column name
|
|
*
|
|
* @return string A column name
|
|
*/
|
|
function referenceColumnName();
|
|
|
|
/**
|
|
* Return a join column name for a property
|
|
*
|
|
* @param string $propertyName A property
|
|
* @return string A join column name
|
|
*/
|
|
function joinColumnName($propertyName);
|
|
|
|
/**
|
|
* Return a join table name
|
|
*
|
|
* @param string $sourceEntity The source entity
|
|
* @param string $targetEntity The target entity
|
|
* @param string $propertyName A property
|
|
* @return string A join table name
|
|
*/
|
|
function joinTableName($sourceEntity, $targetEntity, $propertyName = null);
|
|
|
|
/**
|
|
* Return the foreign key column name for the given parameters
|
|
*
|
|
* @param string $entityName A entity
|
|
* @param string $referencedColumnName A property
|
|
* @return string A join column name
|
|
*/
|
|
function joinKeyColumnName($entityName, $referencedColumnName = null);
|
|
|
|
Implementing a naming strategy
|
|
-------------------------------
|
|
If you have database naming standards like all tables names should be prefixed
|
|
by the application prefix, all column names should be upper case,
|
|
you can easily achieve such standards by implementing a naming strategy.
|
|
You need to implements NamingStrategy first. Following is an example
|
|
|
|
|
|
.. code-block:: php
|
|
|
|
<?php
|
|
class MyAppNamingStrategy implements NamingStrategy
|
|
{
|
|
public function classToTableName($className)
|
|
{
|
|
return 'MyApp_' . substr($className, strrpos($className, '\\') + 1);
|
|
}
|
|
public function propertyToColumnName($propertyName)
|
|
{
|
|
return $propertyName;
|
|
}
|
|
public function referenceColumnName()
|
|
{
|
|
return 'id';
|
|
}
|
|
public function joinColumnName($propertyName)
|
|
{
|
|
return $propertyName . '_' . $this->referenceColumnName();
|
|
}
|
|
public function joinTableName($sourceEntity, $targetEntity, $propertyName = null)
|
|
{
|
|
return strtolower($this->classToTableName($sourceEntity) . '_' .
|
|
$this->classToTableName($targetEntity));
|
|
}
|
|
public function joinKeyColumnName($entityName, $referencedColumnName = null)
|
|
{
|
|
return strtolower($this->classToTableName($entityName) . '_' .
|
|
($referencedColumnName ?: $this->referenceColumnName()));
|
|
}
|
|
}
|
|
|
|
Configuring the namingstrategy is easy if.
|
|
Just set your naming strategy calling ``Doctrine\ORM\Configuration#setNamingStrategy()`` :.
|
|
|
|
.. code-block:: php
|
|
|
|
<?php
|
|
$namingStrategy = new MyAppNamingStrategy();
|
|
$configuration()->setNamingStrategy($namingStrategy); |