1 # The ChangesetController is the RESTful interface to Changeset objects
3 class ChangesetsController < ApplicationController
5 include PaginationMethods
9 before_action :authorize_web
10 before_action :set_locale
11 before_action -> { check_database_readable(:need_api => true) }
12 before_action :require_oauth, :only => :show
16 around_action :web_timeout
19 # list non-empty changesets in reverse chronological order
21 param! :before, Integer, :min => 1
22 param! :after, Integer, :min => 1
24 @params = params.permit(:display_name, :bbox, :friends, :nearby, :before, :after, :list)
26 if request.format == :atom && (@params[:before] || @params[:after])
27 redirect_to url_for(@params.merge(:before => nil, :after => nil)), :status => :moved_permanently
31 if @params[:display_name]
32 user = User.find_by(:display_name => @params[:display_name])
33 if !user || !user.active?
34 render_unknown_user @params[:display_name]
39 if (@params[:friends] || @params[:nearby]) && !current_user
44 if request.format == :html && !@params[:list]
46 render :action => :history, :layout => map_layout
48 changesets = conditions_nonempty(Changeset.all)
50 if @params[:display_name]
51 changesets = if user.data_public? || user == current_user
52 changesets.where(:user => user)
54 changesets.where("false")
57 bbox_array = @params[:bbox].split(",").map(&:to_f)
58 raise OSM::APIBadUserInput, "The parameter bbox must be of the form min_lon,min_lat,max_lon,max_lat" unless bbox_array.count == 4
60 changesets = conditions_bbox(changesets, *bbox_array)
61 elsif @params[:friends] && current_user
62 changesets = changesets.where(:user => current_user.followings.identifiable)
63 elsif @params[:nearby] && current_user
64 changesets = changesets.where(:user => current_user.nearby)
67 @changesets, @newer_changesets_id, @older_changesets_id = get_page_items(changesets, :includes => [:user, :changeset_tags, :comments])
69 render :action => :index, :layout => false
74 # list edits as an atom feed
81 @changeset = Changeset.find(params[:id])
82 case turbo_frame_request_id
83 when "changeset_nodes"
84 @node_pages, @nodes = paginate(:old_nodes, :conditions => { :changeset_id => @changeset.id }, :order => [:node_id, :version], :per_page => 20, :parameter => "node_page")
85 render :partial => "elements", :locals => { :type => "node", :elements => @nodes, :pages => @node_pages }
87 @way_pages, @ways = paginate(:old_ways, :conditions => { :changeset_id => @changeset.id }, :order => [:way_id, :version], :per_page => 20, :parameter => "way_page")
88 render :partial => "elements", :locals => { :type => "way", :elements => @ways, :pages => @way_pages }
89 when "changeset_relations"
90 @relation_pages, @relations = paginate(:old_relations, :conditions => { :changeset_id => @changeset.id }, :order => [:relation_id, :version], :per_page => 20, :parameter => "relation_page")
91 render :partial => "elements", :locals => { :type => "relation", :elements => @relations, :pages => @relation_pages }
93 @comments = if current_user&.moderator?
94 @changeset.comments.unscope(:where => :visible).includes(:author)
96 @changeset.comments.includes(:author)
98 @node_pages, @nodes = paginate(:old_nodes, :conditions => { :changeset_id => @changeset.id }, :order => [:node_id, :version], :per_page => 20, :parameter => "node_page")
99 @way_pages, @ways = paginate(:old_ways, :conditions => { :changeset_id => @changeset.id }, :order => [:way_id, :version], :per_page => 20, :parameter => "way_page")
100 @relation_pages, @relations = paginate(:old_relations, :conditions => { :changeset_id => @changeset.id }, :order => [:relation_id, :version], :per_page => 20, :parameter => "relation_page")
101 if @changeset.user.active? && @changeset.user.data_public?
102 changesets = conditions_nonempty(@changeset.user.changesets)
103 @next_by_user = changesets.where("id > ?", @changeset.id).reorder(:id => :asc).first
104 @prev_by_user = changesets.where(:id => ...@changeset.id).reorder(:id => :desc).first
106 render :layout => map_layout
108 rescue ActiveRecord::RecordNotFound
109 render :template => "browse/not_found", :status => :not_found, :layout => map_layout
114 #------------------------------------------------------------
115 # utility functions below.
116 #------------------------------------------------------------
119 # restrict changesets to those enclosed by a bounding box
120 def conditions_bbox(changesets, min_lon, min_lat, max_lon, max_lat)
121 db_min_lat = (min_lat * GeoRecord::SCALE).to_i
122 db_max_lat = (max_lat * GeoRecord::SCALE).to_i
123 db_min_lon = (wrap_lon(min_lon) * GeoRecord::SCALE).to_i
124 db_max_lon = (wrap_lon(max_lon) * GeoRecord::SCALE).to_i
126 changesets = changesets.where("min_lat < ? and max_lat > ?", db_max_lat, db_min_lat)
128 if max_lon - min_lon >= 360
129 # the query bbox spans the entire world, therefore no lon checks are necessary
131 elsif db_min_lon <= db_max_lon
132 # the normal case when the query bbox doesn't include the antimeridian
133 changesets.where("min_lon < ? and max_lon > ?", db_max_lon, db_min_lon)
135 # the query bbox includes the antimeridian
136 # this case works as if there are two query bboxes:
137 # [-180*SCALE .. db_max_lon], [db_min_lon .. 180*SCALE]
138 # it would be necessary to check if changeset bboxes intersect with either of the query bboxes:
139 # (changesets.min_lon < db_max_lon and changesets.max_lon > -180*SCALE) or (changesets.min_lon < 180*SCALE and changesets.max_lon > db_min_lon)
140 # but the comparisons with -180*SCALE and 180*SCALE are unnecessary:
141 # (changesets.min_lon < db_max_lon) or (changesets.max_lon > db_min_lon)
142 changesets.where("min_lon < ? or max_lon > ?", db_max_lon, db_min_lon)
147 ((lon + 180) % 360) - 180
151 # eliminate empty changesets (where the bbox has not been set)
152 # this should be applied to all changeset list displays
153 def conditions_nonempty(changesets)
154 changesets.where("num_changes > 0")