Revision 442:753f1380d6bc vendor/plugins/awesome_nested_set/lib/.svn
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# the base ActiveRecord class, using the :scope declared in the acts_as_nested_set |
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# declaration. |
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def nested_set_scope |
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options = {:order => quoted_left_column_name}
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options = {:order => "#{self.class.table_name}.#{quoted_left_column_name}"}
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scopes = Array(acts_as_nested_set_options[:scope]) |
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options[:conditions] = scopes.inject({}) do |conditions,attr|
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conditions.merge attr => self[attr] |
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# Prunes a branch off of the tree, shifting all of the elements on the right |
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# back to the left so the counts still work. |
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def prune_from_tree |
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return if right.nil? || left.nil? || !self.class.exists?(id) |
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return if right.nil? || left.nil? || leaf? || !self.class.exists?(id)
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delete_method = acts_as_nested_set_options[:dependent] == :destroy ? |
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:destroy_all : :delete_all |
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# TODO: should destroy children (not descendants) when deleted_method is :destroy_all |
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self.class.base_class.transaction do |
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reload_nested_set |
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nested_set_scope.send(delete_method, |
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["#{quoted_right_column_name} >= ?", right]
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) |
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end |
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# Reload is needed because children may have updated their parent (self) during deletion. |
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reload |
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end |
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# reload left, right, and parent |
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