validates_numericality_of :node_a
validates_numericality_of :node_b
- # FIXME validate a nd b exist and are visible
has_many :old_segments, :foreign_key => :id
belongs_to :user
+ # using belongs_to :foreign_key = 'node_*', since if use has_one :foreign_key = 'id', segment preconditions? fails checking for segment id in node table
+ belongs_to :from_node, :class_name => 'Node', :foreign_key => 'node_a'
+ belongs_to :to_node, :class_name => 'Node', :foreign_key => 'node_b'
def self.from_xml(xml, create=false)
p = XML::Parser.new
el1['id'] = self.id.to_s
el1['from'] = self.node_a.to_s
el1['to'] = self.node_b.to_s
+ el1['user'] = self.user.display_name if self.user.data_public?
Segment.split_tags(el1, self.tags)
el1['visible'] = self.visible.to_s
el1['timestamp'] = self.timestamp.xmlschema
end
end
+ def preconditions_ok?
+ from_node and from_node.visible and to_node and to_node.visible
+ end
end