Returns the value of the attribute
identified by attr_name after it has been type cast. For example,
a date attribute
will cast “2004-12-12” to Date.new(2004, 12, 12). (For
information about specific type casting behavior, see the types under
ActiveModel::Type.)
# File activerecord/lib/active_record/attribute_methods/read.rb, line 29
def read_attribute(attr_name, &block)
name = attr_name.to_s
name = self.class.attribute_aliases[name] || name
return @attributes.fetch_value(name, &block) unless name == "id" && @primary_key
if self.class.composite_primary_key?
@attributes.fetch_value("id", &block)
else
if @primary_key != "id"
ActiveRecord.deprecator.warn( Using read_attribute(:id) to read the primary key value is deprecated. Use #id instead..squish)
end
@attributes.fetch_value(@primary_key, &block)
end
end
