Even if field has version: true attribute, Yaml driver does not set class metadata isVersioned and versionField properties. As a result optimistic lock cannot be used.

I have two entities

/**

• @ORM\Entity
  */
  class User { /** * @ORM\Id * @ORM\GeneratedValue(strategy="AUTO") * @ORM\Column(type="integer") */ private $id }

/**

• @ORM\Entity
  */
  class UserData { /** * @ORM\Id * @ORM\OneToOne(targetEntity="User") */ private $id }

When I convert these with symfony's

doctrine:mapping:convert yml test/

it generates an entity definition for UserData without any id fields, which, of course, cannot be imported to the database, as the new entity doesn't have an identifier column.

In a YAML configuration file

Behavior correct for this:

  uniqueConstraints:
    myConstraint:
      columns: column1,column2

However, if I add a space in the "columns" list:

  uniqueConstraints:
    myConstraint:
      columns: column1, column2

I end up with the following exception:

exception 'Doctrine\DBAL\Schema\SchemaException' with message 'There is no column with name ' column2' on table 'myTable'.

This can be very confusing, especially if (by any chance) you have a line return just on the space in the command line: you never see the space in the exception message.

It seems that YAML allows spaces in lists (http://en.wikipedia.org/wiki/YAML#Lists), but this line doesn't seem to be a YAML list. If it is parsed by Doctrine (split on ","), spaces should be ignored (or trimmed).