module MongoModel::Validations::ClassMethods
Public Instance Methods
Validates whether the associated object or objects are all valid themselves. Works with any kind of association.
class Book < MongoModel::Document has_many :pages belongs_to :library validates_associated :pages, :library end
Warning: If, after the above definition, you then wrote:
class Page < MongoModel::Document belongs_to :book validates_associated :book end
this would specify a circular dependency and cause infinite recursion.
NOTE: This validation will not fail if the association hasn't been assigned. If you want to ensure that the association is both present and guaranteed to be valid, you also need to use validates_presence_of
.
Configuration
options:
-
:message
- A custom error message (default is: “is invalid”) -
:on
- Specifies when this validation is active (default is:save
, other options:create
,:update
). -
:if
- Specifies a method, proc or string to call to determine if the validation should occur (e.g.:if => :allow_validation
, or:if => Proc.new { |user| user.signup_step > 2 }
). The method, proc or string should return or evaluate to a true or false value. -
:unless
- Specifies a method, proc or string to call to determine if the validation should not occur (e.g.:unless => :skip_validation
, or:unless => Proc.new { |user| user.signup_step <= 2 }
). The method, proc or string should return or evaluate to a true or false value.
# File lib/mongomodel/concerns/validations/associated.rb, line 42 def validates_associated(*attr_names) validates_with AssociatedValidator, _merge_attributes(attr_names) end