62 lines
1.6 KiB
Ruby
62 lines
1.6 KiB
Ruby
class AssetField
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include Mongoid::Document
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include Mongoid::Timestamps
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## fields ##
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field :label, :type => String
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field :_alias, :type => String # need it for instance in: > asset.description (description being a custom field)
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field :_name, :type => String
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field :kind, :type => String
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field :position, :type => Integer, :default => 0
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## validations ##
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validates_presence_of :label, :kind
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embedded_in :asset_collection, :inverse_of => :asset_custom_fields
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## methods ##
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def field_type
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case self.kind
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when 'String', 'Text', 'Email' then String
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else
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self.kind.constantize
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end
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end
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def apply(object, association_name)
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# puts "applying...#{self._name} / #{self._alias}"
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object.class.send(:set_field, self._name, { :type => self.field_type })
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object.class_eval <<-EOF
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alias :#{self.safe_alias} :#{self._name}
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alias :#{self.safe_alias}= :#{self._name}=
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EOF
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end
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def safe_alias
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self.set_alias
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self._alias
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end
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protected
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def set_unique_name!
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self._name = "custom_field_#{self.increment_counter!}"
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end
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def set_alias
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return if self.label.blank? && self._alias.blank?
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self._alias ||= self.label.clone
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self._alias.slugify!(:downcase => true, :underscore => true)
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end
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def increment_counter!
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next_value = (self._parent.send(:"#{self.association_name}_counter") || 0) + 1
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self._parent.send(:"#{self.association_name}_counter=", next_value)
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next_value
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end
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def siblings
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self._parent.associations[self.association_name]
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end
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end |