Sha256: fa13dd17a45e4dd588e0aac77fb7ad579fe3db94e6420c8cd5b27bcace887fb9
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Size: 1.7 KB
Versions: 30
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Stored size: 1.7 KB
Contents
module ConfigManager
def self.append_features(base)
super
base.extend(ClassMethods)
end
module ClassMethods
def fields
@fields ||= Hash.new { Item.new }
end
def setting(name, type=:object, default=nil)
item = Item.new
item.name, item.ruby_type, item.default = name.to_s, type, default
fields[name.to_s] = item
add_setting_accessor(item)
end
def default_for(key)
fields[key.to_s].default
end
private
def add_setting_accessor(item)
add_setting_reader(item)
add_setting_writer(item)
end
def add_setting_reader(item)
self.send(:define_method, item.name) do
raw_value = settings[item.name]
raw_value.nil? ? item.default : raw_value
end
if item.ruby_type == :boolean
self.send(:define_method, item.name + "?") do
raw_value = settings[item.name]
raw_value.nil? ? item.default : raw_value
end
end
end
def add_setting_writer(item)
self.send(:define_method, "#{item.name}=") do |newvalue|
retval = settings[item.name] = canonicalize(item.name, newvalue)
self.save! unless new_record?
retval
end
end
end
def canonicalize(key, value)
self.class.fields[key.to_s].canonicalize(value)
end
class Item
attr_accessor :name, :ruby_type, :default
def canonicalize(value)
case ruby_type
when :boolean
case value
when "0", 0, '', false, "false", "f", nil
false
else
true
end
when :integer
value.to_i
when :string
value.to_s
when :yaml
value.to_yaml
else
value
end
end
end
end
Version data entries
30 entries across 30 versions & 1 rubygems