RSpec
Ruby on Rails
Ruby
method
define_method_attribute
v3.2.8 -
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Class: ActiveRecord::AttributeMethods::Read::ClassMethods
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- What's this?
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attribute_cast_code
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cacheable_column?
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cache_attribute?
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cache_attributes
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cached_attributes
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cached_attributes_deprecati...
(>= v4.2.1)
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define_external_attribute_m...
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define_method_attribute
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define_read_method
(<= v3.1.0)
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define_read_method_for_seri...
(<= v3.1.0)
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external_attribute_access_code
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internal_attribute_access_code
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type_cast_attribute
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undefine_attribute_methods
= private
= protected
define_method_attribute(attr_name)
protected
We want to generate the methods via module_eval rather than define_method, because define_method is slower on dispatch and uses more memory (because it creates a closure).
But sometimes the database might return columns with characters that are not allowed in normal method names (like ‘my_column(omg)’. So to work around this we first define with the __temp__ identifier, and then use alias method to rename it to what we want.
