0899194f6b
Fix the `normalize` and `array_attribute` macros conflicting with each other on the WikiPage model. This meant code like `wiki_page.other_names = "foo bar"` didn't work. Both macros defined a `other_names=` method, but one method overrode the other. The fix is to use anonymous modules and prepend so we can chain method calls with super.
37 lines
1.1 KiB
Ruby
37 lines
1.1 KiB
Ruby
module ArrayAttribute
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extend ActiveSupport::Concern
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class_methods do
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# Defines `<attribute>_string`, `<attribute>_string=`, and `<attribute>=`
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# methods for converting an array attribute to or from a string.
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#
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# The `<attribute>=` setter parses strings into an array using the
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# `parse` regex. The resulting strings can be converted to another type
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# with the `cast` option.
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def array_attribute(name, parse: /[^[:space:]]+/, cast: :itself)
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mod = Module.new do
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define_method "#{name}_string" do
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send(name).join(" ")
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end
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define_method "#{name}_string=" do |value|
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raise ArgumentError, "#{name} must be a String" unless value.respond_to?(:to_str)
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send("#{name}=", value)
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end
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define_method "#{name}=" do |value|
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if value.respond_to?(:to_str)
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super value.to_str.scan(parse).map(&cast)
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elsif value.respond_to?(:to_a)
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super value.to_a
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else
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raise ArgumentError, "#{name} must be a String or an Array"
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end
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end
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end
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prepend mod
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end
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end
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end
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