Y aquí vamos:especificaste los mismos alias para las relaciones.
User:
relations:
viewed_by:
class: View
local: user_id
foreign: viewed_id
type: many
foreignType: one
foreignAlias: viewed
viewed:
class: View
local: user_id
foreign: viewer_id
type: many
foreignType: one
foreignAlias: viewer
O configuras toda la relación de muchos a muchos de manera diferente:
User:
relations:
viewed_by:
class: User
local: viewed_id
foreign: viewer_id,
refClass: View
viewed:
class: User
local:viewer_id
foreign: viewed_id
refClass: View
y View
debería verse como
View:
columns:
viewed_id:
type: integer
primary: true
viewer_id:
type: integer
primary: true
Consulte la documentación de Doctrine en relaciones de muchos a muchos .