class Way < ActiveRecord::Base
require 'xml/libxml'
-
+
+ set_table_name 'current_ways'
+
belongs_to :user
+ has_many :old_ways, :foreign_key => 'id', :order => 'version'
+
has_many :way_nodes, :foreign_key => 'id', :order => 'sequence_id'
- has_many :way_tags, :foreign_key => 'id'
+ has_many :nodes, :through => :way_nodes, :order => 'sequence_id'
- has_many :old_ways, :foreign_key => 'id', :order => 'version'
+ has_many :way_tags, :foreign_key => 'id'
- set_table_name 'current_ways'
+ has_many :containing_relation_members, :class_name => "RelationMember", :as => :member
+ has_many :containing_relations, :class_name => "Relation", :through => :containing_relation_members, :source => :relation, :extend => ObjectFinder
def self.from_xml(xml, create=false)
begin
end
pt.find('nd').each do |nd|
- way.add_nd_num(nd['id'])
+ way.add_nd_num(nd['ref'])
end
end
rescue
return way
end
+ # Find a way given it's ID, and in a single SQL call also grab its nodes
+ #
+
+ # You can't pull in all the tags too unless we put a sequence_id on the way_tags table and have a multipart key
+ def self.find_eager(id)
+ way = Way.find(id, :include => {:way_nodes => :node})
+ #If waytag had a multipart key that was real, you could do this:
+ #way = Way.find(id, :include => [:way_tags, {:way_nodes => :node}])
+ end
+
+ # Find a way given it's ID, and in a single SQL call also grab its nodes and tags
def to_xml
doc = OSM::API.new.get_xml_doc
doc.root << to_xml_node()
el1['timestamp'] = self.timestamp.xmlschema
user_display_name_cache = {} if user_display_name_cache.nil?
-
+
if user_display_name_cache and user_display_name_cache.key?(self.user_id)
# use the cache if available
elsif self.user.data_public?
ordered_nodes.each do |nd_id|
if nd_id and nd_id != '0'
e = XML::Node.new 'nd'
- e['id'] = nd_id
+ e['ref'] = nd_id
el1 << e
end
end
-
+
self.way_tags.each do |tag|
e = XML::Node.new 'tag'
e['k'] = tag.k
def nds
unless @nds
- @nds = Array.new
- self.way_nodes.each do |nd|
- @nds += [nd.node_id]
- end
+ @nds = Array.new
+ self.way_nodes.each do |nd|
+ @nds += [nd.node_id]
+ end
end
@nds
end
def tags
unless @tags
- @tags = Hash.new
- self.way_tags.each do |tag|
- @tags[tag.k] = tag.v
- end
+ @tags = {}
+ self.way_tags.each do |tag|
+ @tags[tag.k] = tag.v
+ end
end
@tags
end
@tags[k] = v
end
- def save_with_history
- begin
- Way.transaction do
- t = Time.now
- self.timestamp = t
- self.save!
+ def save_with_history!
+ t = Time.now
- tags = self.tags
+ Way.transaction do
+ self.timestamp = t
+ self.save!
+ end
- WayTag.delete_all(['id = ?', self.id])
+ WayTag.transaction do
+ tags = self.tags
- tags.each do |k,v|
- tag = WayTag.new
- tag.k = k
- tag.v = v
- tag.id = self.id
- tag.save!
- end
+ WayTag.delete_all(['id = ?', self.id])
- nds = self.nds
+ tags.each do |k,v|
+ tag = WayTag.new
+ tag.k = k
+ tag.v = v
+ tag.id = self.id
+ tag.save!
+ end
+ end
- WayNode.delete_all(['id = ?', self.id])
+ WayNode.transaction do
+ nds = self.nds
- i = 1
- nds.each do |n|
- nd = WayNode.new
- nd.id = self.id
- nd.node_id = n
- nd.sequence_id = i
- nd.save!
- i += 1
- end
+ WayNode.delete_all(['id = ?', self.id])
- old_way = OldWay.from_way(self)
- old_way.timestamp = t
- old_way.save_with_dependencies!
+ sequence = 1
+ nds.each do |n|
+ nd = WayNode.new
+ nd.id = [self.id, sequence]
+ nd.node_id = n
+ nd.save!
+ sequence += 1
end
-
- return true
- rescue => ex
- puts ex
- return nil
end
+
+ old_way = OldWay.from_way(self)
+ old_way.timestamp = t
+ old_way.save_with_dependencies!
end
def preconditions_ok?
return true
end
+ # Delete the way and it's relations, but don't really delete it - set its visibility to false and update the history etc to maintain wiki-like functionality.
+ def delete_with_relations_and_history(user)
+ if self.visible
+ # FIXME
+ # this should actually delete the relations,
+ # not just throw a PreconditionFailed if it's a member of a relation!!
+ if RelationMember.find(:first, :joins => "INNER JOIN current_relations ON current_relations.id=current_relation_members.id",
+ :conditions => [ "visible = 1 AND member_type='way' and member_id=?", self.id])
+ raise OSM::APIPreconditionFailedError
+ # end FIXME
+ else
+ self.user_id = user.id
+ self.tags = []
+ self.nds = []
+ self.visible = false
+ self.save_with_history!
+ end
+ else
+ raise OSM::APIAlreadyDeletedError
+ end
+ end
+
+ # delete a way and it's nodes that aren't part of other ways, with history
+ def delete_with_relations_and_nodes_and_history(user)
+ node_ids_to_delete = node_ids - node_ids_not_to_delete
+
+ # delete the nodes not used by other ways
+ self.unshared_node_ids.each do |node_id|
+ n = Node.find(node_id)
+ n.user_id = user.id
+ n.visible = false
+ n.save_with_history!
+ end
+
+ self.user_id = user.id
+
+ self.delete_with_relations_and_history(user)
+ end
+
+ # Find nodes that belong to this way only
+ def unshared_node_ids
+ node_ids = self.nodes.collect { |node| node.id }
+
+ unless node_ids.empty?
+ way_nodes = WayNode.find(:all, :conditions => "node_id in (#{node_ids.join(',')}) and id != #{self.id}")
+ node_ids = node_ids - way_nodes.collect { |way_node| way_node.node_id }
+ end
+
+ return node_ids
+ end
+
+ # Temporary method to match interface to nodes
+ def tags_as_hash
+ return self.tags
+ end
end
projects / rails.git / blobdiff