+ ##
+ # query changesets by bounding box, time, user or open/closed status.
+ def query
+ # create the conditions that the user asked for. some or all of
+ # these may be nil.
+ conditions = conditions_bbox(params['bbox'])
+ conditions = cond_merge conditions, conditions_user(params['user'])
+ conditions = cond_merge conditions, conditions_time(params['time'])
+ conditions = cond_merge conditions, conditions_open(params['open'])
+ conditions = cond_merge conditions, conditions_closed(params['closed'])
+
+ # create the results document
+ results = OSM::API.new.get_xml_doc
+
+ # add all matching changesets to the XML results document
+ Changeset.find(:all,
+ :conditions => conditions,
+ :limit => 100,
+ :order => 'created_at desc').each do |cs|
+ results.root << cs.to_xml_node
+ end
+
+ render :text => results.to_s, :content_type => "text/xml"
+ end
+
+ ##
+ # updates a changeset's tags. none of the changeset's attributes are
+ # user-modifiable, so they will be ignored.
+ #
+ # changesets are not (yet?) versioned, so we don't have to deal with
+ # history tables here. changesets are locked to a single user, however.
+ #
+ # after succesful update, returns the XML of the changeset.
+ def update
+ # request *must* be a PUT.
+ assert_method :put
+
+ changeset = Changeset.find(params[:id])
+ new_changeset = Changeset.from_xml(request.raw_post)
+
+ unless new_changeset.nil?
+ check_changeset_consistency(changeset, @user)
+ changeset.update_from(new_changeset, @user)
+ render :text => changeset.to_xml, :mime_type => "text/xml"
+ else
+
+ render :nothing => true, :status => :bad_request
+ end
+ end
+
+
+
+ ##
+ # list edits (open changesets) in reverse chronological order
+ def list
+ conditions = conditions_nonempty
+
+
+ # @changesets = Changeset.find(:all, :order => "closed_at DESC", :conditions => ['closed_at < ?', DateTime.now], :limit=> 20)
+
+
+ #@edit_pages, @edits = paginate(:changesets,
+ # :include => [:user, :changeset_tags],
+ # :conditions => conditions,
+ # :order => "changesets.created_at DESC",
+ # :per_page => 20)
+ #
+
+ @edits = Changeset.find(:all,
+ :order => "changesets.created_at DESC",
+ :conditions => conditions,
+ :limit => 20)
+
+ end
+
+ ##
+ # list edits (open changesets) in reverse chronological order
+ def list_rss
+ conditions = conditions_nonempty
+
+ @edits = Changeset.find(:all,
+ :order => "changesets.created_at DESC",
+ :conditions => conditions,
+ :limit => 20)
+
+ end
+
+ ##
+ # list edits (changesets) belonging to a user
+ def list_user
+ user = User.find_by_display_name(params[:display_name], :conditions => {:visible => true})
+
+ if user
+ @display_name = user.display_name
+ if not user.data_public? and @user != user
+ @edits = nil
+ render
+ else
+ conditions = cond_merge conditions, ['user_id = ?', user.id]
+ conditions = cond_merge conditions, conditions_nonempty
+ @edit_pages, @edits = paginate(:changesets,
+ :include => [:user, :changeset_tags],
+ :conditions => conditions,
+ :order => "changesets.created_at DESC",
+ :per_page => 20)