[](attr_name)
Instance Public methods
Returns the value of the attribute identified by attr_name
after it has been typecast (for example, â2004-12-12â in a date column is
cast to a date object, like Date.new(2004, 12, 12)). It raises
ActiveModel::MissingAttributeError if the identified attribute
is missing.
Alias for the read_attribute method.
class Person < ActiveRecord::Base
belongs_to :organization
end
person = Person.new(name: 'Francesco', age: '22')
person[:name] # => "Francesco"
person[:age] # => 22
person = Person.select('id').first
person[:name] # => ActiveModel::MissingAttributeError: missing attribute: name
person[:organization_id] # => ActiveModel::MissingAttributeError: missing attribute: organization_id
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