class Way < ActiveRecord::Base
require 'xml/libxml'
-
+
belongs_to :user
+ has_many :nodes, :through => :way_nodes, :order => 'sequence_id'
has_many :way_nodes, :foreign_key => 'id', :order => 'sequence_id'
has_many :way_tags, :foreign_key => 'id'
p.string = xml
doc = p.parse
- way = Way.new
-
doc.find('//osm/way').each do |pt|
- if !create and pt['id'] != '0'
- way.id = pt['id'].to_i
- end
+ return Way.from_xml_node(pt, create)
+ end
+ rescue
+ return nil
+ end
+ end
- if create
- way.timestamp = Time.now
- way.visible = true
- else
- if pt['timestamp']
- way.timestamp = Time.parse(pt['timestamp'])
- end
- end
+ def self.from_xml_node(pt, create=false)
+ way = Way.new
- pt.find('tag').each do |tag|
- way.add_tag_keyval(tag['k'], tag['v'])
- end
+ if !create and pt['id'] != '0'
+ way.id = pt['id'].to_i
+ end
+
+ way.version = pt['version']
- pt.find('nd').each do |nd|
- way.add_nd_num(nd['ref'])
- end
+ if create
+ way.timestamp = Time.now
+ way.visible = true
+ else
+ if pt['timestamp']
+ way.timestamp = Time.parse(pt['timestamp'])
end
- rescue
- way = nil
+ end
+
+ pt.find('tag').each do |tag|
+ way.add_tag_keyval(tag['k'], tag['v'])
+ end
+
+ pt.find('nd').each do |nd|
+ way.add_nd_num(nd['ref'])
end
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['id'] = self.id.to_s
el1['visible'] = self.visible.to_s
el1['timestamp'] = self.timestamp.xmlschema
+ el1['version'] = self.version.to_s
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?
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
t = Time.now
Way.transaction do
+ self.version += 1
self.timestamp = t
self.save!
- end
- WayTag.transaction do
tags = self.tags
-
WayTag.delete_all(['id = ?', self.id])
-
tags.each do |k,v|
tag = WayTag.new
tag.k = k
tag.id = self.id
tag.save!
end
- end
- WayNode.transaction do
nds = self.nds
-
WayNode.delete_all(['id = ?', self.id])
-
- i = 1
+ sequence = 1
nds.each do |n|
nd = WayNode.new
- nd.id = self.id
+ nd.id = [self.id, sequence]
nd.node_id = n
- nd.sequence_id = i
nd.save!
- i += 1
+ sequence += 1
end
+
+ old_way = OldWay.from_way(self)
+ old_way.timestamp = t
+ old_way.save_with_dependencies!
end
+ end
- old_way = OldWay.from_way(self)
- old_way.timestamp = t
- old_way.save_with_dependencies!
+ def update_from(new_way, user)
+ if !new_way.preconditions_ok?
+ raise OSM::APIPreconditionFailedError.new
+ elsif new_way.version != version
+ raise OSM::APIVersionMismatchError.new(new_way.version, version)
+ else
+ self.user_id = user.id
+ self.tags = new_way.tags
+ self.nds = new_way.nds
+ self.visible = true
+ save_with_history!
+ end
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!!
+
+ # FIXME: this should probably renamed to delete_with_history
+ 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 = self.nodes.collect {|node| node.id }
+ node_ids_not_to_delete = []
+ way_nodes = WayNode.find(:all, :conditions => "node_id in (#{node_ids.join(',')}) and id != #{self.id}")
+
+ node_ids_not_to_delete = way_nodes.collect {|way_node| way_node.node_id}
+
+ node_ids_to_delete = node_ids - node_ids_not_to_delete
+
+ # delete the nodes not used by other ways
+ node_ids_to_delete.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
end
projects / rails.git / blobdiff