Add a new column in table using .orm.yml configuration - symfony

Question

I have a question for you. It's possible to add a new column for a table using .orm.yml configuration?
For example I have :
Shop\DesktopBundle\Entity\Order:
type: entity
repositoryClass: Shop\DesktopBundle\Repository\OrderRepository
table: order
id:
id:
type: integer
generator: { strategy: AUTO }
fields:
order_adresse:
type: string
length: 255
order_date:
type: datetime
is_active:
type: boolean
nullable: true
created_at:
type: datetime
oneToMany:
Cart:
targetEntity: Cart
mappedBy: carts
manyToOne:
category:
targetEntity: Customer
inversedBy: orders
joinColumn:
name: customer_id
referencedColumnName: id
manyToMany:
categories:
targetEntity: Product
joinTable:
name: order_details
joinColumns:
order_id:
referencedColumnName: id
inverseJoinColumns:
product_id:
referencedColumnName: id
lifecycleCallbacks:
prePersist: [ setCreatedAtValue ]
So I tried to add the column "quantity" in relation many to many > order_details table

Answer 1

You tried to add quantity to the relation not to the table. Try this:
manyToMany:
categories:
targetEntity: Product
joinTable:
name: order_details
joinColumns:
order_id:
referencedColumnName: id
inverseJoinColumns:
product_id:
referencedColumnName: id
fields: # if you already have 'fields' append to it
quantity:
type: int
A good example of setting your entity using yml is here: http://doctrine-orm.readthedocs.org/en/latest/reference/yaml-mapping.html#example