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[rails.git] / app / models / changeset.rb

diff --git a/app/models/changeset.rb b/app/models/changeset.rb
index f41ad99551f96ed3c8b5bba53c285231ba30ddef..5cdfeb994544444f08edb72cc4f8ba42fead569d 100644 (file)
--- a/app/models/changeset.rb
+++ b/app/models/changeset.rb
@@ -1,3 +1,30 @@
+# == Schema Information
+#
+# Table name: changesets
+#
+#  id          :integer          not null, primary key
+#  user_id     :integer          not null
+#  created_at  :datetime         not null
+#  min_lat     :integer
+#  max_lat     :integer
+#  min_lon     :integer
+#  max_lon     :integer
+#  closed_at   :datetime         not null
+#  num_changes :integer          default(0), not null
+#
+# Indexes
+#
+#  changesets_bbox_idx                (min_lat,max_lat,min_lon,max_lon)
+#  changesets_closed_at_idx           (closed_at)
+#  changesets_created_at_idx          (created_at)
+#  changesets_user_id_created_at_idx  (user_id,created_at)
+#  changesets_user_id_id_idx          (user_id,id)
+#
+# Foreign Keys
+#
+#  changesets_user_id_fkey  (user_id => users.id)
+#
+
 class Changeset < ActiveRecord::Base
   require "xml/libxml"
 
@@ -28,9 +55,6 @@ class Changeset < ActiveRecord::Base
 
   before_save :update_closed_at
 
-  # over-expansion factor to use when updating the bounding box
-  EXPAND = 0.1
-
   # maximum number of elements allowed in a changeset
   MAX_ELEMENTS = 10000
 
@@ -82,6 +106,7 @@ class Changeset < ActiveRecord::Base
     pt.find("tag").each do |tag|
       raise OSM::APIBadXMLError.new("changeset", pt, "tag is missing key") if tag["k"].nil?
       raise OSM::APIBadXMLError.new("changeset", pt, "tag is missing value") if tag["v"].nil?
+
       cs.add_tag_keyval(tag["k"], tag["v"])
     end
 
@@ -100,12 +125,9 @@ class Changeset < ActiveRecord::Base
   end
 
   ##
-  # expand the bounding box to include the given bounding box. also,
-  # 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.
+  # expand the bounding box to include the given bounding box.
   def update_bbox!(bbox_update)
-    bbox.expand!(bbox_update, EXPAND)
+    bbox.expand!(bbox_update)
 
     # update active record. rails 2.1's dirty handling should take care of
     # whether this object needs saving or not.
@@ -114,8 +136,7 @@ class Changeset < ActiveRecord::Base
 
   ##
   # the number of elements is also passed in so that we can ensure that
-  # a single changeset doesn't contain too many elements. this, of course,
-  # destroys the optimisation described in the bbox method above.
+  # a single changeset doesn't contain too many elements.
   def add_changes!(elements)
     self.num_changes += elements
   end
@@ -133,7 +154,7 @@ class Changeset < ActiveRecord::Base
   attr_writer :tags
 
   def add_tag_keyval(k, v)
-    @tags = {} unless @tags
+    @tags ||= {}
 
     # duplicate tags are now forbidden, so we can't allow values
     # in the hash to be overwritten.
@@ -187,7 +208,7 @@ class Changeset < ActiveRecord::Base
 
     user_display_name_cache = {} if user_display_name_cache.nil?
 
-    if user_display_name_cache && user_display_name_cache.key?(user_id)
+    if user_display_name_cache&.key?(user_id)
       # use the cache if available
     elsif user.data_public?
       user_display_name_cache[user_id] = user.display_name
@@ -211,7 +232,8 @@ class Changeset < ActiveRecord::Base
 
     bbox.to_unscaled.add_bounds_to(el1, "_") if bbox.complete?
 
-    el1["comments_count"] = comments.count.to_s
+    el1["comments_count"] = comments.length.to_s
+    el1["changes_count"] = num_changes.to_s
 
     if include_discussion
       el2 = XML::Node.new("discussion")
@@ -241,10 +263,10 @@ class Changeset < ActiveRecord::Base
   # bounding box, only the tags of the changeset.
   def update_from(other, user)
     # ensure that only the user who opened the changeset may modify it.
-    raise OSM::APIUserChangesetMismatchError.new unless user.id == user_id
+    raise OSM::APIUserChangesetMismatchError unless user.id == user_id
 
     # can't change a closed changeset
-    raise OSM::APIChangesetAlreadyClosedError.new(self) unless is_open?
+    raise OSM::APIChangesetAlreadyClosedError, self unless is_open?
 
     # copy the other's tags
     self.tags = other.tags