How do I set a default value in Doctrine 2?
This question is related to
php
orm
doctrine-orm
Here is how I solved it for myself. Below is an Entity example with default value for MySQL. However, this also requires the setup of a constructor in your entity, and for you to set the default value there.
Entity\Example:
type: entity
table: example
fields:
id:
type: integer
id: true
generator:
strategy: AUTO
label:
type: string
columnDefinition: varchar(255) NOT NULL DEFAULT 'default_value' COMMENT 'This is column comment'
Be careful when setting default values on property definition! Do it in constructor instead, to keep it problem-free. If you define it on property definition, then persist the object to the database, then make a partial load, then not loaded properties will again have the default value. That is dangerous if you want to persist the object again.
If you use yaml definition for your entity, the following works for me on a postgresql database:
Entity\Entity_name:
type: entity
table: table_name
fields:
field_name:
type: boolean
nullable: false
options:
default: false
Works for me on a mysql database also:
Entity\Entity_name:
type: entity
table: table_name
fields:
field_name:
type: integer
nullable: true
options:
default: 1
You can do it using xml as well:
<field name="acmeOne" type="string" column="acmeOne" length="36">
<options>
<option name="comment">Your SQL field comment goes here.</option>
<option name="default">Default Value</option>
</options>
</field>
While setting the value in the constructor would work, using the Doctrine Lifecycle events might be a better solution.
By leveraging the prePersist Lifecycle Event, you could set your default value on your entity only on initial persist.
One more reason why read the documentation for Symfony will never go out of trend. There is a simple solution for my specific case and is to set the field type option empty_data to a default value.
Again, this solution is only for the scenario where an empty input in a form sets the DB field to null.
None of the previous answers helped me with my specific scenario but I found a solution.
I had a form field that needed to behave as follow:
I then tried all the recommendations given in here. Let me list them:
<?php
/**
* @Entity
*/
class myEntity {
/**
* @var string
*
* @Column(name="myColumn", type="string", length="50")
*/
private $myColumn = 'myDefaultValue';
...
}
@ORM\Column(name="foo", options={"default":"foo bar"})
/**
* @Entity
*/
class myEntity {
...
public function __construct()
{
$this->myColumn = 'myDefaultValue';
}
...
}
Symfony form fields override default values set on the Entity class.
Meaning, your schema for your DB can have a default value defined but if you leave a non-required field empty when submitting your form, the form->handleRequest() inside your form->isValid() method will override those default values on your Entity class and set them to the input field values. If the input field values are blank, then it will set the Entity property to null.
http://symfony.com/doc/current/book/forms.html#handling-form-submissions
Set the default value on your controller after form->handleRequest() inside your form->isValid() method:
...
if ($myEntity->getMyColumn() === null) {
$myEntity->setMyColumn('myDefaultValue');
}
...
Not a beautiful solution but it works. I could probably make a validation group but there may be people that see this issue as a data transformation rather than data validation, I leave it to you to decide.
I also tried to override the Entity setter this way:
...
/**
* Set myColumn
*
* @param string $myColumn
*
* @return myEntity
*/
public function setMyColumn($myColumn)
{
$this->myColumn = ($myColumn === null || $myColumn === '') ? 'myDefaultValue' : $myColumn;
return $this;
}
...
This, even though it looks cleaner, it doesn't work. The reason being that the evil form->handleRequest() method does not use the Model's setter methods to update the data (dig into form->setData() for more details).
I struggled with the same problem. I wanted to have the default value from the database into the entities (automatically). Guess what, I did it :)
<?php
/**
* Created by JetBrains PhpStorm.
* User: Steffen
* Date: 27-6-13
* Time: 15:36
* To change this template use File | Settings | File Templates.
*/
require_once 'bootstrap.php';
$em->getConfiguration()->setMetadataDriverImpl(
new \Doctrine\ORM\Mapping\Driver\DatabaseDriver(
$em->getConnection()->getSchemaManager()
)
);
$driver = new \Doctrine\ORM\Mapping\Driver\DatabaseDriver($em->getConnection()->getSchemaManager());
$driver->setNamespace('Models\\');
$em->getConfiguration()->setMetadataDriverImpl($driver);
$cmf = new \Doctrine\ORM\Tools\DisconnectedClassMetadataFactory();
$cmf->setEntityManager($em);
$metadata = $cmf->getAllMetadata();
// Little hack to have default values for your entities...
foreach ($metadata as $k => $t)
{
foreach ($t->getFieldNames() as $fieldName)
{
$correctFieldName = \Doctrine\Common\Util\Inflector::tableize($fieldName);
$columns = $tan = $em->getConnection()->getSchemaManager()->listTableColumns($t->getTableName());
foreach ($columns as $column)
{
if ($column->getName() == $correctFieldName)
{
// We skip DateTime, because this needs to be a DateTime object.
if ($column->getType() != 'DateTime')
{
$metadata[$k]->fieldMappings[$fieldName]['default'] = $column->getDefault();
}
break;
}
}
}
}
// GENERATE PHP ENTITIES!
$entityGenerator = new \Doctrine\ORM\Tools\EntityGenerator();
$entityGenerator->setGenerateAnnotations(true);
$entityGenerator->setGenerateStubMethods(true);
$entityGenerator->setRegenerateEntityIfExists(true);
$entityGenerator->setUpdateEntityIfExists(false);
$entityGenerator->generate($metadata, __DIR__);
echo "Entities created";
None of this worked for me. I found some documentation on doctrine's site that says to set the value directly to set a default value.
private $default = 0;
This inserted the value I wanted.
<?php
/**
* @Entity
*/
class myEntity {
/**
* @var string
*
* @ORM\Column(name="myColumn", type="integer", options={"default" : 0})
*/
private $myColumn;
...
}
Note that this uses SQL DEFAULT, which is not supported for some fields like BLOB and TEXT.
Set up a constructor in your entity and set the default value there.
Adding to @romanb brilliant answer.
This adds a little overhead in migration, because you obviously cannot create a field with not null constraint and with no default value.
// this up() migration is autogenerated, please modify it to your needs
$this->abortIf($this->connection->getDatabasePlatform()->getName() != "postgresql");
//lets add property without not null contraint
$this->addSql("ALTER TABLE tablename ADD property BOOLEAN");
//get the default value for property
$object = new Object();
$defaultValue = $menuItem->getProperty() ? "true":"false";
$this->addSql("UPDATE tablename SET property = {$defaultValue}");
//not you can add constraint
$this->addSql("ALTER TABLE tablename ALTER property SET NOT NULL");
With this answer, I encourage you to think why do you need the default value in the database in the first place? And usually it is to allow creating objects with not null constraint.
Use:
options={"default":"foo bar"}
and not:
options={"default"="foo bar"}
For instance:
/**
* @ORM\Column(name="foo", type="smallint", options={"default":0})
*/
private $foo
The workaround I used was a LifeCycleCallback. Still waiting to see if there is any more "native" method, for instance @Column(type="string", default="hello default value").
/**
* @Entity @Table(name="posts") @HasLifeCycleCallbacks
*/
class Post implements Node, \Zend_Acl_Resource_Interface {
...
/**
* @PrePersist
*/
function onPrePersist() {
// set default date
$this->dtPosted = date('Y-m-d H:m:s');
}
Source: Stackoverflow.com