class Changeset < ActiveRecord::Base
require 'xml/libxml'
- belongs_to :user
+ belongs_to :user, :counter_cache => true
- has_many :changeset_tags, :foreign_key => 'id'
+ has_many :changeset_tags
has_many :nodes
has_many :ways
validates_numericality_of :user_id, :integer_only => true
validates_numericality_of :num_changes, :integer_only => true, :greater_than_or_equal_to => 0
+ before_save :update_closed_at
+
# over-expansion factor to use when updating the bounding box
EXPAND = 0.1
def self.from_xml(xml, create=false)
begin
- p = XML::Parser.string(xml)
+ p = XML::Parser.string(xml, :options => XML::Parser::Options::NOERROR)
doc = p.parse
doc.find('//osm/changeset').each do |pt|
# returns the bounding box of the changeset. it is possible that some
# or all of the values will be nil, indicating that they are undefined.
def bbox
- @bbox ||= [ min_lon, min_lat, max_lon, max_lat ]
+ @bbox ||= BoundingBox.new(min_lon, min_lat, max_lon, max_lat)
end
def has_valid_bbox?
- not bbox.include? nil
- end
-
- ##
- # returns area of the changset bbox as a rough comparitive quantity for use of changset displays
- def area
- if has_valid_bbox?
- (max_lon - min_lon) * (max_lat - min_lat)
- else
- 0
- end
+ bbox.complete?
end
##
# expand a little bit more in the direction of the expansion, so that
# further expansions may be unnecessary. this is an optimisation
# suggested on the wiki page by kleptog.
- def update_bbox!(array)
- # ensure that bbox is cached and has no nils in it. if there are any
- # nils, just use the bounding box update to write over them.
- @bbox = bbox.zip(array).collect { |a, b| a.nil? ? b : a }
-
- # only try to update the bbox if there is a value for every coordinate
- # which there will be from the previous line as long as both array and
- # bbox are all non-nil.
- if has_valid_bbox? and array.all?
- # FIXME - this looks nasty and violates DRY... is there any prettier
- # way to do this?
- @bbox[0] = [-180 * GeoRecord::SCALE, array[0] + EXPAND * (@bbox[0] - @bbox[2])].max if array[0] < @bbox[0]
- @bbox[1] = [ -90 * GeoRecord::SCALE, array[1] + EXPAND * (@bbox[1] - @bbox[3])].max if array[1] < @bbox[1]
- @bbox[2] = [ 180 * GeoRecord::SCALE, array[2] + EXPAND * (@bbox[2] - @bbox[0])].min if array[2] > @bbox[2]
- @bbox[3] = [ 90 * GeoRecord::SCALE, array[3] + EXPAND * (@bbox[3] - @bbox[1])].min if array[3] > @bbox[3]
+ def update_bbox!(bbox_update)
+ bbox.expand!(bbox_update, EXPAND)
- # update active record. rails 2.1's dirty handling should take care of
- # whether this object needs saving or not.
- self.min_lon, self.min_lat, self.max_lon, self.max_lat = @bbox
- end
+ # update active record. rails 2.1's dirty handling should take care of
+ # whether this object needs saving or not.
+ self.min_lon, self.min_lat, self.max_lon, self.max_lat = @bbox.to_a if bbox.complete?
end
##
self.save!
tags = self.tags
- ChangesetTag.delete_all(['id = ?', self.id])
+ ChangesetTag.delete_all(:changeset_id => self.id)
tags.each do |k,v|
tag = ChangesetTag.new
+ tag.changeset_id = self.id
tag.k = k
tag.v = v
- tag.id = self.id
tag.save!
end
end
# set the auto-close time to be one hour in the future unless
# that would make it more than 24h long, in which case clip to
# 24h, as this has been decided is a reasonable time limit.
- def before_save
+ def update_closed_at
if self.is_open?
if (closed_at - created_at) > (MAX_TIME_OPEN - IDLE_TIMEOUT)
self.closed_at = created_at + MAX_TIME_OPEN
el1['closed_at'] = self.closed_at.xmlschema unless is_open?
el1['open'] = is_open?.to_s
- el1['min_lon'] = (bbox[0].to_f / GeoRecord::SCALE).to_s unless bbox[0].nil?
- el1['min_lat'] = (bbox[1].to_f / GeoRecord::SCALE).to_s unless bbox[1].nil?
- el1['max_lon'] = (bbox[2].to_f / GeoRecord::SCALE).to_s unless bbox[2].nil?
- el1['max_lat'] = (bbox[3].to_f / GeoRecord::SCALE).to_s unless bbox[3].nil?
+ if bbox.complete?
+ bbox.to_unscaled.add_bounds_to(el1, '_')
+ end
# NOTE: changesets don't include the XML of the changes within them,
# they are just structures for tagging. to get the osmChange of a
projects / rails.git / blobdiff