50 lines
1.9 KiB
Ruby
50 lines
1.9 KiB
Ruby
# this is the base class of all configurable settings
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class ConfigurableSetting < ActiveRecord::Base
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belongs_to :configurable, :polymorphic => true
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belongs_to :targetable, :polymorphic => true
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# ==For migration up
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# in your migration self.up method:
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# <tt>ConfigurableSetting.create_table</tt>
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def self.create_table
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self.connection.create_table :configurable_settings, :options => 'ENGINE=InnoDB' do |t|
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t.column :configurable_id, :integer
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t.column :configurable_type, :string
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t.column :targetable_id, :integer
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t.column :targetable_type, :string
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t.column :name, :string, :null => false
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t.column :value_type, :string
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t.column :value, :text, :null => true
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end
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self.connection.add_index :configurable_settings, :name
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end
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# ==For migration down
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# in your migration self.down method:
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# <tt>ConfigurableSetting.drop_table</tt>
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def self.drop_table
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self.connection.remove_index :configurable_settings, :name
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self.connection.drop_table :configurable_settings
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end
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# returns a string with the classname of configurable
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def self.configurable_class(configurable) # :nodoc:
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ActiveRecord::Base.send(:class_name_of_active_record_descendant, configurable.class).to_s
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end
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# returns a string with the classname of configurable
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def self.targetable_class(targetable) # :nodoc:
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ActiveRecord::Base.send(:class_name_of_active_record_descendant, targetable.class).to_s
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end
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# returns the instance of the "owner" of the setting
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def self.find_configurable(configured_class, configured_id) # :nodoc:
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configured_class.constantize.find(configured_id)
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end
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# returns the instance of the "target" of the setting
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def self.find_targetable(targeted_class, targeted_id) # :nodoc:
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targeted_class.constantize.find(targeted_id)
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end
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end |