instance method
read_attribute_for_validation
Ruby on Rails edge
Since v8.1.4Available in: v8.1.4 edge
Signature
read_attribute_for_validation(attribute)Hook method defining how an attribute value should be retrieved. By default this is assumed to be an instance named after the attribute. If the attribute does not exist, nil is returned. Override this method in subclasses should you need to retrieve the value for a given attribute differently:
“‘ class MyClass
include ActiveModel::Validations
def initialize(data = {})
@data = data
end
def read_attribute_for_validation(key)
@data[key]
end
end “‘
Parameters
-
attributereq
Source
# File activemodel/lib/active_model/validations.rb, line 491
def read_attribute_for_validation(attribute)
send(attribute) if respond_to?(attribute, true)
end
Defined in activemodel/lib/active_model/validations.rb line 491
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Defined in ActiveModel::Validations